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Published in: BMC Psychiatry 1/2013

Open Access 01-12-2013 | Study protocol

Web-based guided self-help for employees with depressive symptoms (Happy@Work): design of a randomized controlled trial

Authors: Anna S Geraedts, Annet M Kleiboer, Noortje M Wiezer, Willem van Mechelen, Pim Cuijpers

Published in: BMC Psychiatry | Issue 1/2013

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Abstract

Background

Depressive disorders are highly prevalent in the working population and are associated with excessive costs for both society and companies. Effective treatment for employees with depressive symptoms in occupational health care is limited. The purpose of this study is to investigate the effectiveness and cost-effectiveness of an indicated preventive web-based guided self-help course for employees with depressive symptoms.

Methods

The study is a two-arm randomized controlled trial comparing a web-based guided self-help course with care-as-usual. The self-help course consists of 6 weekly lessons. Weekly support will be provided by a coach via the website. Subjects in the care-as-usual group do not receive any treatment in addition to regular care. 200 white collar workers from several national and international companies in the Netherlands will be recruited via different methods such as banners on the company’s intranet, pamphlets and posters. Subjects will be included when they: have elevated depressive symptoms (score ≥16 on the Center for Epidemiologic Studies Depression scale), are 18 years of age or older, have access to the Internet and can be contacted via e-mail. Exclusion criteria are: partial or full work absenteeism, a legal labor dispute with the employer and receiving treatment from the company’s occupational health care at study entrance.
The primary outcome is depressive symptoms. Secondary outcomes include work absenteeism, work performance, burnout, anxiety, quality of life, health care use and production losses. Outcome data will be collected at 8 weeks, 6 months, and 12 months after baseline. Analyses will be based on the intention-to-treat principle. The cost-effectiveness analyses will be performed from a societal and a company’s perspective. A process evaluation will be conducted alongside the study.

Discussion

This study evaluates the effectiveness and cost-effectiveness of a web-based guided self-help course for employees with depressive symptoms. This study could stimulate the use of e-mental health interventions in the worksite setting.

Trial registration

Nederlands Trial Register (NTR): TC2993
Appendix
Available only for authorised users
Literature
1.
go back to reference Kessler RC, McGonagle KA, Zhao S, Nelson CB, Hughes M, Eshleman S, Wittchen HU, Kendler KS: Lifetime and 12-month prevalence of DSM-III-R psychiatric disorders in the United States: results from the National Comorbidity Survey. Arch Gen Psychiatry. 1994, 51: 8-19. 10.1001/archpsyc.1994.03950010008002.CrossRefPubMed Kessler RC, McGonagle KA, Zhao S, Nelson CB, Hughes M, Eshleman S, Wittchen HU, Kendler KS: Lifetime and 12-month prevalence of DSM-III-R psychiatric disorders in the United States: results from the National Comorbidity Survey. Arch Gen Psychiatry. 1994, 51: 8-19. 10.1001/archpsyc.1994.03950010008002.CrossRefPubMed
2.
go back to reference Alonso J, Angermeyer MC, Bernert S, Bruffaerts R, Brugha TS, Bryson H, de Girolamo G, Graaf R, Demyttenaere K, Gasquet I, Haro JM, Katz SJ, Kessler RC, Kovess V, Lépine JP, Ormel J, Polidori G, Russo LJ, Vilagut G, Almansa J, Arbabzadeh-Bouchez S, Autonell J, Bernal M, Buist-Bouwman MA, Codony M, Domingo-Salvany A, Ferrer M, Joo SS, Martínez-Alonso M, Matschinger H, Mazzi F, Morgan Z, Morosini P, Palacín C, Romera B, Taub N, Vollebergh WA: ESEMeD/MHEDEA 2000 Investigators, European Study of the Epidemiology of Mental Disorders (ESEMeD) Project: Prevalence of mental disorders in Europe: results from the European Study of the Epidemiology of Mental Disorders (ESEMeD) project. Acta Psychiatr Scand. 2004, 109: 21-27.CrossRef Alonso J, Angermeyer MC, Bernert S, Bruffaerts R, Brugha TS, Bryson H, de Girolamo G, Graaf R, Demyttenaere K, Gasquet I, Haro JM, Katz SJ, Kessler RC, Kovess V, Lépine JP, Ormel J, Polidori G, Russo LJ, Vilagut G, Almansa J, Arbabzadeh-Bouchez S, Autonell J, Bernal M, Buist-Bouwman MA, Codony M, Domingo-Salvany A, Ferrer M, Joo SS, Martínez-Alonso M, Matschinger H, Mazzi F, Morgan Z, Morosini P, Palacín C, Romera B, Taub N, Vollebergh WA: ESEMeD/MHEDEA 2000 Investigators, European Study of the Epidemiology of Mental Disorders (ESEMeD) Project: Prevalence of mental disorders in Europe: results from the European Study of the Epidemiology of Mental Disorders (ESEMeD) project. Acta Psychiatr Scand. 2004, 109: 21-27.CrossRef
3.
go back to reference Waraich P, Goldner EM, Somers JM, Hsu L: Prevalence and incidence studies of mood disorders: a systematic review of the literature. Can J Psychiatry. 2004, 49: 124-138.PubMed Waraich P, Goldner EM, Somers JM, Hsu L: Prevalence and incidence studies of mood disorders: a systematic review of the literature. Can J Psychiatry. 2004, 49: 124-138.PubMed
4.
go back to reference Wang JL, Adair CE, Patten SB: Mental health and related disability among workers: A population-based study. American Journal of Industrial Medicine. 2006, 49: 514-522. 10.1002/ajim.20319.CrossRefPubMed Wang JL, Adair CE, Patten SB: Mental health and related disability among workers: A population-based study. American Journal of Industrial Medicine. 2006, 49: 514-522. 10.1002/ajim.20319.CrossRefPubMed
5.
go back to reference OECD: Sick on the job?: Myths and realities about mental health and work. 2012, OECD Publishing: Mental health and work OECD: Sick on the job?: Myths and realities about mental health and work. 2012, OECD Publishing: Mental health and work
6.
go back to reference Berto P, D’Ilario D, Ruffo P, Di Virgilio RF: Depression: cost-of illness studies in the international literature: a review. J Ment Health Policy Econ. 2000, 3: 3-10. 10.1002/1099-176X(200003)3:1<3::AID-MHP68>3.0.CO;2-H.CrossRefPubMed Berto P, D’Ilario D, Ruffo P, Di Virgilio RF: Depression: cost-of illness studies in the international literature: a review. J Ment Health Policy Econ. 2000, 3: 3-10. 10.1002/1099-176X(200003)3:1<3::AID-MHP68>3.0.CO;2-H.CrossRefPubMed
7.
go back to reference Greenberg PE, Birnbaum HG: The economic burden of depression in the US: societal and patient perspectives. Exp Opin Pharmacother. 2005, 6: 369-376. 10.1517/14656566.6.3.369.CrossRef Greenberg PE, Birnbaum HG: The economic burden of depression in the US: societal and patient perspectives. Exp Opin Pharmacother. 2005, 6: 369-376. 10.1517/14656566.6.3.369.CrossRef
8.
go back to reference Bijl RV, Ravelli A, van Zessen G: Prevalence of psychiatric disorders in the general population: results of the Netherlands Mental Health Survey and Incidence Study (NEMESIS). Soc Psychiatry Psychiatr Edpidemiol. 1998, 33: 587-595. 10.1007/s001270050098.CrossRef Bijl RV, Ravelli A, van Zessen G: Prevalence of psychiatric disorders in the general population: results of the Netherlands Mental Health Survey and Incidence Study (NEMESIS). Soc Psychiatry Psychiatr Edpidemiol. 1998, 33: 587-595. 10.1007/s001270050098.CrossRef
9.
go back to reference Laitinen-Krispijn S: Bijl RV: Mental disorders and employee sickness absence: the NEMESIS study. Netherlands Mental Health Survey and Incidence Study. Soc Psychiatry Psychiatr Epidemiol. 2000, 35: 71-77.CrossRefPubMed Laitinen-Krispijn S: Bijl RV: Mental disorders and employee sickness absence: the NEMESIS study. Netherlands Mental Health Survey and Incidence Study. Soc Psychiatry Psychiatr Epidemiol. 2000, 35: 71-77.CrossRefPubMed
10.
go back to reference de Graaf R, Tuithof M, van Dorsselaer S, ten Have M: Verzuim door psychische en somatische aandoeningen bij werkenden. 2011, Trimbos-Instituut: Resulaten van de ‘Netherlands Mental Health Survey and Incidence Study-2’ (NEMESIS-2). Utrecht, [in Dutch] de Graaf R, Tuithof M, van Dorsselaer S, ten Have M: Verzuim door psychische en somatische aandoeningen bij werkenden. 2011, Trimbos-Instituut: Resulaten van de ‘Netherlands Mental Health Survey and Incidence Study-2’ (NEMESIS-2). Utrecht, [in Dutch]
11.
go back to reference Smit F, Cuijpers P, Oostenbrink J, Batelaan N, de Graaf R, Beekman A: Excess costs of common mental disorders: population based cohort study. J Ment Health Policy Econ. 2006, 9: 193-200.PubMed Smit F, Cuijpers P, Oostenbrink J, Batelaan N, de Graaf R, Beekman A: Excess costs of common mental disorders: population based cohort study. J Ment Health Policy Econ. 2006, 9: 193-200.PubMed
12.
go back to reference Cuijpers P, Smit F, Oostenbrink J, de Graaf R, ten Have M, Beekman A: Economic costs of minor depression: a population-based study. Acta Psychiatr Scand. 2007, 115: 229-236. 10.1111/j.1600-0447.2006.00851.x.CrossRefPubMed Cuijpers P, Smit F, Oostenbrink J, de Graaf R, ten Have M, Beekman A: Economic costs of minor depression: a population-based study. Acta Psychiatr Scand. 2007, 115: 229-236. 10.1111/j.1600-0447.2006.00851.x.CrossRefPubMed
13.
go back to reference UWV: Costs of disability benefits in 2004, defined by ICD-10 diagnoses. 2005, UWV (Workers Insurance Authority), [in Dutch] UWV: Costs of disability benefits in 2004, defined by ICD-10 diagnoses. 2005, UWV (Workers Insurance Authority), [in Dutch]
14.
go back to reference NKAP: Factsheet 2, Facts and figures about work incapacity due to mental health disorders. 2004, NKAP (Dutch Knowledge Centre of Work and Mind): Utrecht, [in Dutch] NKAP: Factsheet 2, Facts and figures about work incapacity due to mental health disorders. 2004, NKAP (Dutch Knowledge Centre of Work and Mind): Utrecht, [in Dutch]
15.
go back to reference Thomas CM, Morris S: Cost of depression among adults in England in 2000. Br J Psychiatry. 2003, 183: 514-519. 10.1192/bjp.183.6.514.CrossRefPubMed Thomas CM, Morris S: Cost of depression among adults in England in 2000. Br J Psychiatry. 2003, 183: 514-519. 10.1192/bjp.183.6.514.CrossRefPubMed
16.
go back to reference Lerner D, Henke RD: What does research tell us about depression, job performance, and work productivity?. J Occup Environ Med. 2008, 50: 401-410. 10.1097/JOM.0b013e31816bae50.CrossRefPubMed Lerner D, Henke RD: What does research tell us about depression, job performance, and work productivity?. J Occup Environ Med. 2008, 50: 401-410. 10.1097/JOM.0b013e31816bae50.CrossRefPubMed
17.
go back to reference Lexis MA, Jansen NW, van Amelsvoort LG, van den Brandt PA, Kant I: Depressive complaints as a predictor of sickness absence among the working population. J Occup Environ Med. 2009, 51: 887-895. 10.1097/JOM.0b013e3181aa012a.CrossRefPubMed Lexis MA, Jansen NW, van Amelsvoort LG, van den Brandt PA, Kant I: Depressive complaints as a predictor of sickness absence among the working population. J Occup Environ Med. 2009, 51: 887-895. 10.1097/JOM.0b013e3181aa012a.CrossRefPubMed
18.
go back to reference Stansfeld S, Feeney A, Head J, Canner R, North F, Marmot MG: Sickness absence for psychiatric illness: the Whitehall II Study. Soc Sci Med. 1995, 40: 189-197. 10.1016/0277-9536(94)E0064-Y.CrossRefPubMed Stansfeld S, Feeney A, Head J, Canner R, North F, Marmot MG: Sickness absence for psychiatric illness: the Whitehall II Study. Soc Sci Med. 1995, 40: 189-197. 10.1016/0277-9536(94)E0064-Y.CrossRefPubMed
19.
go back to reference Lexis MA, Jansen NW, Huibers MJ, van Amelsvoort LPMG, Berkouwer A, Ton GTA, van den Brandt PA, Kant I: Prevention of long-term sickness absence and major depression in high-risk employees: a randomised controlled trial. Occup Environ Med. 2011, 68: 400-407. 10.1136/oem.2010.057877.CrossRefPubMed Lexis MA, Jansen NW, Huibers MJ, van Amelsvoort LPMG, Berkouwer A, Ton GTA, van den Brandt PA, Kant I: Prevention of long-term sickness absence and major depression in high-risk employees: a randomised controlled trial. Occup Environ Med. 2011, 68: 400-407. 10.1136/oem.2010.057877.CrossRefPubMed
21.
go back to reference Henderson M, Glozier N, Elliott KH: Long term sickness absence is caused by common conditions and needs managing. BMJ. 2005, 330: 802-803. 10.1136/bmj.330.7495.802.CrossRefPubMedPubMedCentral Henderson M, Glozier N, Elliott KH: Long term sickness absence is caused by common conditions and needs managing. BMJ. 2005, 330: 802-803. 10.1136/bmj.330.7495.802.CrossRefPubMedPubMedCentral
22.
go back to reference Cuijpers P, Dekker J, Hollon SD, Andersson G: Adding Psychotherapy to pharmacotherapy in the treatment of depressive disorders in adults: A meta-analysis. J of Clin Psychiatry. 2009, 70: 1219-1229. 10.4088/JCP.09r05021.CrossRef Cuijpers P, Dekker J, Hollon SD, Andersson G: Adding Psychotherapy to pharmacotherapy in the treatment of depressive disorders in adults: A meta-analysis. J of Clin Psychiatry. 2009, 70: 1219-1229. 10.4088/JCP.09r05021.CrossRef
23.
go back to reference Dobson KS: A meta-analysis of the efficacy of cognitive therapy for depression. J of Cons and Clin Psychology. 1989, 57: 414-419.CrossRef Dobson KS: A meta-analysis of the efficacy of cognitive therapy for depression. J of Cons and Clin Psychology. 1989, 57: 414-419.CrossRef
24.
go back to reference Pinquart M, Duberstein PR, Lyness JM: Treatments for later-life depressive conditions: A meta-analytic comparison of pharmacotherapy and psychotherapy. Am J Psychiatry. 2006, 163: 1493-1501. 10.1176/appi.ajp.163.9.1493.CrossRefPubMed Pinquart M, Duberstein PR, Lyness JM: Treatments for later-life depressive conditions: A meta-analytic comparison of pharmacotherapy and psychotherapy. Am J Psychiatry. 2006, 163: 1493-1501. 10.1176/appi.ajp.163.9.1493.CrossRefPubMed
25.
go back to reference Churchill R, Hunot V, Corney R, Knapp M, McGuire H, Tylee A, Vessely S: A systematic review of controlled trials of the effectiveness and cost-effectiveness of brief psychological treatments for depression. Health Technol Assess. 2001, 5 (35): Churchill R, Hunot V, Corney R, Knapp M, McGuire H, Tylee A, Vessely S: A systematic review of controlled trials of the effectiveness and cost-effectiveness of brief psychological treatments for depression. Health Technol Assess. 2001, 5 (35):
26.
go back to reference Andersson G, Cuijpers P: Internet-based and other computerized psychological treatments for adults depression: A meta-analysis. Cog Beh Therapy. 2009, 38: 196-205. 10.1080/16506070903318960.CrossRef Andersson G, Cuijpers P: Internet-based and other computerized psychological treatments for adults depression: A meta-analysis. Cog Beh Therapy. 2009, 38: 196-205. 10.1080/16506070903318960.CrossRef
27.
go back to reference Spek V, Cuijpers P, Nyklícek I, Riper H, Keyzer J, Pop V: Internet-based cognitive behaviour therapy for symptoms of depression and anxiety: a meta-analysis. Psychol Med. 2007, 37: 319-328. 10.1017/S0033291706008944.CrossRefPubMed Spek V, Cuijpers P, Nyklícek I, Riper H, Keyzer J, Pop V: Internet-based cognitive behaviour therapy for symptoms of depression and anxiety: a meta-analysis. Psychol Med. 2007, 37: 319-328. 10.1017/S0033291706008944.CrossRefPubMed
28.
go back to reference van’t Hof E, Cuijpers P, Stein DJ: Self-help and Internet-guided interventions in depression and anxiety disorders: a systematic review of meta-analyses. CNS Spectr. 2009, 14: 34-40.PubMed van’t Hof E, Cuijpers P, Stein DJ: Self-help and Internet-guided interventions in depression and anxiety disorders: a systematic review of meta-analyses. CNS Spectr. 2009, 14: 34-40.PubMed
29.
go back to reference Warmerdam L, van Straten A, Twisk J, Riper H, Cuijpers P: Internet-based treatment for adults with depressive symptoms: randomized controlled trial. J Med Internet Res. 2008, 10: e44-10.2196/jmir.1094.CrossRefPubMedPubMedCentral Warmerdam L, van Straten A, Twisk J, Riper H, Cuijpers P: Internet-based treatment for adults with depressive symptoms: randomized controlled trial. J Med Internet Res. 2008, 10: e44-10.2196/jmir.1094.CrossRefPubMedPubMedCentral
30.
go back to reference van Straten A, Cuijpers P, Smits N: Effectiveness of a web-based self-help intervention for symptoms of depression, anxiety, and stress: randomized controlled trial. J Med Internet Res. 2008, 10: e7-10.2196/jmir.954.CrossRefPubMedPubMedCentral van Straten A, Cuijpers P, Smits N: Effectiveness of a web-based self-help intervention for symptoms of depression, anxiety, and stress: randomized controlled trial. J Med Internet Res. 2008, 10: e7-10.2196/jmir.954.CrossRefPubMedPubMedCentral
31.
go back to reference Nieuwenhuijsen K, Bültmann U, Neumeyer-Gromen A, Verhoeven AC, Verbeek JH, Feltz-Cornelis CM: Interventions to improve occupational health in depressed people. Cochrane Database Syst Rev. 2008, 2: CD006237-PubMed Nieuwenhuijsen K, Bültmann U, Neumeyer-Gromen A, Verhoeven AC, Verbeek JH, Feltz-Cornelis CM: Interventions to improve occupational health in depressed people. Cochrane Database Syst Rev. 2008, 2: CD006237-PubMed
32.
go back to reference van der Klink J: Management of mental health problems of workers by occupational physicians. 2007, Utrecht: NVAB [Netherlands Society of Occupational physicians] van der Klink J: Management of mental health problems of workers by occupational physicians. 2007, Utrecht: NVAB [Netherlands Society of Occupational physicians]
33.
go back to reference van der Klink JJL, Blonk RWB, Schene AH, van Dijk FJH: Reducing long term sickness absence by an activating intervention in adjustment disorders: a cluster randomized controlled design. Occup Environ Med. 2003, 60: 429-437. 10.1136/oem.60.6.429.CrossRefPubMedPubMedCentral van der Klink JJL, Blonk RWB, Schene AH, van Dijk FJH: Reducing long term sickness absence by an activating intervention in adjustment disorders: a cluster randomized controlled design. Occup Environ Med. 2003, 60: 429-437. 10.1136/oem.60.6.429.CrossRefPubMedPubMedCentral
34.
go back to reference Blonk RWB, Brenninkmeijer V, Lagerveld SE, Houtman ILD: Return to work: a comparison of two cognitive behavioural interventions in cases of work-related psychological complaints among the self-employed. Work & Stress. 2006, 20: 129-144. 10.1080/02678370600856615.CrossRef Blonk RWB, Brenninkmeijer V, Lagerveld SE, Houtman ILD: Return to work: a comparison of two cognitive behavioural interventions in cases of work-related psychological complaints among the self-employed. Work & Stress. 2006, 20: 129-144. 10.1080/02678370600856615.CrossRef
35.
go back to reference Schene AH, Koeter MWJ, Kikkert MJ, Swinkels JA, McCrone P: Adjuvant occupational therapy for work-related major depression works: randomized trial including economic evaluation. Psychol Med. 2007, 37: 351-362. 10.1017/S0033291706009366.CrossRefPubMed Schene AH, Koeter MWJ, Kikkert MJ, Swinkels JA, McCrone P: Adjuvant occupational therapy for work-related major depression works: randomized trial including economic evaluation. Psychol Med. 2007, 37: 351-362. 10.1017/S0033291706009366.CrossRefPubMed
36.
go back to reference Rebergen DS, Bruinvels DJ, Bezemer PD, van der Beek AJ, van Mechelen W: Guideline-based care of common mental disorders by occupational physicians (CO-OOP study): a randomized controlled trial. J Occup Environ Med. 2009, 51: 305-312. 10.1097/JOM.0b013e3181990d32.CrossRefPubMed Rebergen DS, Bruinvels DJ, Bezemer PD, van der Beek AJ, van Mechelen W: Guideline-based care of common mental disorders by occupational physicians (CO-OOP study): a randomized controlled trial. J Occup Environ Med. 2009, 51: 305-312. 10.1097/JOM.0b013e3181990d32.CrossRefPubMed
37.
go back to reference Lexis MAS, Jansen NWH, Huibers MJH, van Amelsvoort LGPM, Berkouwer A, Tjin A, Ton G, van den Brandt PA, Kant IJ: Prevention of long-term sickness absence and major depression in high-risk employees: a randomised controlled trial. Occup Environ Med. 2011, 68: 400-407. 10.1136/oem.2010.057877.CrossRefPubMed Lexis MAS, Jansen NWH, Huibers MJH, van Amelsvoort LGPM, Berkouwer A, Tjin A, Ton G, van den Brandt PA, Kant IJ: Prevention of long-term sickness absence and major depression in high-risk employees: a randomised controlled trial. Occup Environ Med. 2011, 68: 400-407. 10.1136/oem.2010.057877.CrossRefPubMed
38.
go back to reference Gärtner FR, Ketelaar SM, Smeets O, Bolier L, Fischer E, van Dijk FJH, Nieuwenhuijsen K, Sluiter JK: The Mental Vitality @ Work study: design of a randomized controlled trial on the effect of a workers’ health surveillance mental module for nurses and allied health professionals. BMC Public Health. 2011, 11: 290-303. 10.1186/1471-2458-11-290.CrossRefPubMedPubMedCentral Gärtner FR, Ketelaar SM, Smeets O, Bolier L, Fischer E, van Dijk FJH, Nieuwenhuijsen K, Sluiter JK: The Mental Vitality @ Work study: design of a randomized controlled trial on the effect of a workers’ health surveillance mental module for nurses and allied health professionals. BMC Public Health. 2011, 11: 290-303. 10.1186/1471-2458-11-290.CrossRefPubMedPubMedCentral
39.
go back to reference Eysenbach G: CONSORT-EHEALTH: Improving and Standardizing Reports of Web-based and Mobile Health Interventions. J Med Internet Res. 2011, 13: e126-10.2196/jmir.1923.CrossRefPubMedPubMedCentral Eysenbach G: CONSORT-EHEALTH: Improving and Standardizing Reports of Web-based and Mobile Health Interventions. J Med Internet Res. 2011, 13: e126-10.2196/jmir.1923.CrossRefPubMedPubMedCentral
40.
go back to reference Bowman D, Scogin F, Lyrene B: The efficacy of Self-Examination Therapy and Cognitive Bibliotherapy in the treatment of mild to moderate depression. Psychotherapy Research. 1995, 5: 131-140. 10.1080/10503309512331331256.CrossRef Bowman D, Scogin F, Lyrene B: The efficacy of Self-Examination Therapy and Cognitive Bibliotherapy in the treatment of mild to moderate depression. Psychotherapy Research. 1995, 5: 131-140. 10.1080/10503309512331331256.CrossRef
41.
go back to reference Beck AT, Rush AJ, Shaw BF, Emery G: Cognitive therapy of depression. 1979, New York: Guilford Press Beck AT, Rush AJ, Shaw BF, Emery G: Cognitive therapy of depression. 1979, New York: Guilford Press
42.
go back to reference Franck E, Wiezer N: Ervaringen met de Preventie Leidraad. 2004, Hoofddorp: TNO, [in Dutch] Franck E, Wiezer N: Ervaringen met de Preventie Leidraad. 2004, Hoofddorp: TNO, [in Dutch]
43.
go back to reference Franck E, Wiezer N: Handleiding Preventie Leidraad. 2004, Hoofddorp: TNO, [in Dutch] Franck E, Wiezer N: Handleiding Preventie Leidraad. 2004, Hoofddorp: TNO, [in Dutch]
44.
go back to reference Bouma J, Ranchor AV, Sanderman R, van Sonderen E: Assessment of symptoms of depression by means of the CES-D: A manual. 1995, Groningen: Stichting Drukkerij Regenboog Bouma J, Ranchor AV, Sanderman R, van Sonderen E: Assessment of symptoms of depression by means of the CES-D: A manual. 1995, Groningen: Stichting Drukkerij Regenboog
45.
go back to reference Furukawa T, Hirai T, Kitamura T, Takahashi K: Application of the Center for Epidemiologic Studies Depression Scale among first-visit psychiatric patients: a new approach to improve its performance. J Affect Disord. 1997, 46: 1-13. 10.1016/S0165-0327(97)00079-7.CrossRefPubMed Furukawa T, Hirai T, Kitamura T, Takahashi K: Application of the Center for Epidemiologic Studies Depression Scale among first-visit psychiatric patients: a new approach to improve its performance. J Affect Disord. 1997, 46: 1-13. 10.1016/S0165-0327(97)00079-7.CrossRefPubMed
46.
go back to reference Haringsma R, Engels GI, Beekman AT, Spinhoven P: The criterion validity of the Center for Epidemiological Studies Depression Scale (CES-D) in a sample of self-referred elders with depressive symptomatology. Int J Geriatr Psychiatry. 2004, 19: 558-563. 10.1002/gps.1130.CrossRefPubMed Haringsma R, Engels GI, Beekman AT, Spinhoven P: The criterion validity of the Center for Epidemiological Studies Depression Scale (CES-D) in a sample of self-referred elders with depressive symptomatology. Int J Geriatr Psychiatry. 2004, 19: 558-563. 10.1002/gps.1130.CrossRefPubMed
47.
go back to reference Yang HJ, Soong WT, Kuo PH, Chang HL, Chen WJ: Using the CESD in a two-phase survey for depressive disorders among nonreferred adolescents in Taipei: a stratum-specific likelihood ratio analysis. J Affect Disord. 2004, 82: 419-430.PubMed Yang HJ, Soong WT, Kuo PH, Chang HL, Chen WJ: Using the CESD in a two-phase survey for depressive disorders among nonreferred adolescents in Taipei: a stratum-specific likelihood ratio analysis. J Affect Disord. 2004, 82: 419-430.PubMed
48.
go back to reference Kessler R, Barber C, Beck A, Berglund P, Cleary PD, McKenas D, Pronk N, Simon G, Stang P, Ustun TB, Wang P: The World Health Organization health and work performance questionnaire (HPQ). J Occup Environ Med. 2003, 45: 156-174. 10.1097/01.jom.0000052967.43131.51.CrossRefPubMed Kessler R, Barber C, Beck A, Berglund P, Cleary PD, McKenas D, Pronk N, Simon G, Stang P, Ustun TB, Wang P: The World Health Organization health and work performance questionnaire (HPQ). J Occup Environ Med. 2003, 45: 156-174. 10.1097/01.jom.0000052967.43131.51.CrossRefPubMed
49.
go back to reference Kessler RC, Ames M, Hymel PA, Loeppke R, McKenas DK, Richling DE, Stang PE, Ustun TD: Using the World Health Organization Health and Work Performance Questionnaire (HPQ) to evaluate the indirect workplace costs of illness. J Occup Environ Med. 2004, 46: 23-37. 10.1097/01.jom.0000126683.75201.c5.CrossRef Kessler RC, Ames M, Hymel PA, Loeppke R, McKenas DK, Richling DE, Stang PE, Ustun TD: Using the World Health Organization Health and Work Performance Questionnaire (HPQ) to evaluate the indirect workplace costs of illness. J Occup Environ Med. 2004, 46: 23-37. 10.1097/01.jom.0000126683.75201.c5.CrossRef
50.
go back to reference Maslach C, Jackson SE, Leiter MP: Maslach Burnout Inventory manual. 1996, Palo Alto, California: Consulting Psychologist’s Press, 3 Maslach C, Jackson SE, Leiter MP: Maslach Burnout Inventory manual. 1996, Palo Alto, California: Consulting Psychologist’s Press, 3
51.
go back to reference Schaufeli WB, Van Dierendonck D: UBOS, Utrechtse Burnout Schaal. 2000, Lisse: Swets Test Publishers Schaufeli WB, Van Dierendonck D: UBOS, Utrechtse Burnout Schaal. 2000, Lisse: Swets Test Publishers
52.
go back to reference Zigmond AS, Snaith RP: The hospital anxiety and depression scale. Acta Psychiatr Scand. 1983, 67: 361-370. 10.1111/j.1600-0447.1983.tb09716.x.CrossRefPubMed Zigmond AS, Snaith RP: The hospital anxiety and depression scale. Acta Psychiatr Scand. 1983, 67: 361-370. 10.1111/j.1600-0447.1983.tb09716.x.CrossRefPubMed
53.
go back to reference Spinhoven P, Ormel J, Sloekers PP, Kempen GI, Speckens AE, Van Hemert AM: A validation study of the Hospital Anxiety and Depression Scale (HADS) in different groups of Dutch subjects. Psychol Med. 1997, 27: 363-370. 10.1017/S0033291796004382.CrossRefPubMed Spinhoven P, Ormel J, Sloekers PP, Kempen GI, Speckens AE, Van Hemert AM: A validation study of the Hospital Anxiety and Depression Scale (HADS) in different groups of Dutch subjects. Psychol Med. 1997, 27: 363-370. 10.1017/S0033291796004382.CrossRefPubMed
54.
go back to reference Group EQ: Euroqol – a new facility for the measurement of health related quality of life. Health Policy. 1990, 16: 199-208.CrossRef Group EQ: Euroqol – a new facility for the measurement of health related quality of life. Health Policy. 1990, 16: 199-208.CrossRef
55.
go back to reference Lamers LM, Stalmeier PFM, McDonnell J, Krabbe PFM, van Busschbach JJ: Kwaliteit van leven meten in economische evaluaties: het Nederlands EQ-5D-tarief. Nederlands Tijdschrift voor Geneeskunde. 2005, 149: 1574-1578.PubMed Lamers LM, Stalmeier PFM, McDonnell J, Krabbe PFM, van Busschbach JJ: Kwaliteit van leven meten in economische evaluaties: het Nederlands EQ-5D-tarief. Nederlands Tijdschrift voor Geneeskunde. 2005, 149: 1574-1578.PubMed
56.
go back to reference Hakkaart-van Roijen L, van Straten A, Donker M, Tiemans B: Manual Trimbos/iMTA questionnaire for costs associated with psychiatric illness (TIC-P). 2002, Rotterdam: Institute for Medical Technology Assessment Hakkaart-van Roijen L, van Straten A, Donker M, Tiemans B: Manual Trimbos/iMTA questionnaire for costs associated with psychiatric illness (TIC-P). 2002, Rotterdam: Institute for Medical Technology Assessment
57.
go back to reference van den Brink M, van den Hout WB, Stiggelbout AM, Putter H, van de Velder CJH, Kievit J: Self reports of health-care utilization: Diary or questionnaire?. Int J Technol Assess Health Care. 2005, 21: 298-304.CrossRefPubMed van den Brink M, van den Hout WB, Stiggelbout AM, Putter H, van de Velder CJH, Kievit J: Self reports of health-care utilization: Diary or questionnaire?. Int J Technol Assess Health Care. 2005, 21: 298-304.CrossRefPubMed
58.
go back to reference World Health Organization: Composite International Diagnostic Interview (CIDI). 1990, Geneva: WHO World Health Organization: Composite International Diagnostic Interview (CIDI). 1990, Geneva: WHO
59.
go back to reference American Psychiatric Association: Diagnostic and Statistical Manual of Mental Disorders - Fourth Edition (DSM-IV). 2001, Washington, American Psychiatric Association American Psychiatric Association: Diagnostic and Statistical Manual of Mental Disorders - Fourth Edition (DSM-IV). 2001, Washington, American Psychiatric Association
60.
go back to reference Warmerdam L, van Straten A, Jongsma J, Twisk J, Cuijpers P: Online cognitive behavioral therapy and problem-solving therapy for depressive symptoms: exploring mechanisms of change. J Behav Ther & Exp Psychiat. 2010, 41: 64-70. 10.1016/j.jbtep.2009.10.003.CrossRef Warmerdam L, van Straten A, Jongsma J, Twisk J, Cuijpers P: Online cognitive behavioral therapy and problem-solving therapy for depressive symptoms: exploring mechanisms of change. J Behav Ther & Exp Psychiat. 2010, 41: 64-70. 10.1016/j.jbtep.2009.10.003.CrossRef
61.
go back to reference Stansfeld S, Candy B: Psychosocial work environment and mental health- a meta-analytic review. Scan J Work Environ Health. 2006, 32 (6): 443-462. 10.5271/sjweh.1050.CrossRef Stansfeld S, Candy B: Psychosocial work environment and mental health- a meta-analytic review. Scan J Work Environ Health. 2006, 32 (6): 443-462. 10.5271/sjweh.1050.CrossRef
62.
go back to reference Peirce RS, Frone MR, Russell M, Cooper ML, Mudar P: A longitudinal model of social contact, social support, depression and alcohol use. Health Psychology. 2000, 19 (1): 28-38.CrossRefPubMed Peirce RS, Frone MR, Russell M, Cooper ML, Mudar P: A longitudinal model of social contact, social support, depression and alcohol use. Health Psychology. 2000, 19 (1): 28-38.CrossRefPubMed
63.
go back to reference Plaisier I, de Bruijn JGM, de Graaf R, ten Have M, Beekman ATF, Penninx BWJH: The contribution of working conditions and social support to the onset of depressive and anxiety disorders among male and female employees. Social Science & Medicine. 2007, 64: 401-410. 10.1016/j.socscimed.2006.09.008.CrossRef Plaisier I, de Bruijn JGM, de Graaf R, ten Have M, Beekman ATF, Penninx BWJH: The contribution of working conditions and social support to the onset of depressive and anxiety disorders among male and female employees. Social Science & Medicine. 2007, 64: 401-410. 10.1016/j.socscimed.2006.09.008.CrossRef
64.
go back to reference Pearlin LI, Schooler C: The Structure of coping. J Health Soc Behav. 1978, 19: 2-21. 10.2307/2136319.CrossRefPubMed Pearlin LI, Schooler C: The Structure of coping. J Health Soc Behav. 1978, 19: 2-21. 10.2307/2136319.CrossRefPubMed
65.
go back to reference van den Bossche SNJ, Smulders PGW: The Netherlands Working Conditions Survey 2003. 2004, TNO Work and Employment: Methodology and overall results. Hoofddorp, [in Dutch] van den Bossche SNJ, Smulders PGW: The Netherlands Working Conditions Survey 2003. 2004, TNO Work and Employment: Methodology and overall results. Hoofddorp, [in Dutch]
66.
go back to reference Karasek RA: Job content questionnaire and user’s guide. 1985, University of Massachusetts Lowell, Department of Work Environment: Lowell Karasek RA: Job content questionnaire and user’s guide. 1985, University of Massachusetts Lowell, Department of Work Environment: Lowell
67.
go back to reference Houtman I, Goudswaard A, Dhondt S, Van der Grinten M, Hildebrandt V, Kompier M: Evaluation study on stress and physical load. 1995, Den Haag: VUGA, [in Dutch] Houtman I, Goudswaard A, Dhondt S, Van der Grinten M, Hildebrandt V, Kompier M: Evaluation study on stress and physical load. 1995, Den Haag: VUGA, [in Dutch]
68.
go back to reference Ritterband LM, Ardalan K, Thorndike FP, Magee JC, Saylor DK, Cox DJ, Sutphen JL, Borowitz SM: Real World Use of an Internet Intervention for Pediatric Encopresis. J Med Internet Res. 2008, 10: 2-10.2196/jmir.963.CrossRef Ritterband LM, Ardalan K, Thorndike FP, Magee JC, Saylor DK, Cox DJ, Sutphen JL, Borowitz SM: Real World Use of an Internet Intervention for Pediatric Encopresis. J Med Internet Res. 2008, 10: 2-10.2196/jmir.963.CrossRef
69.
go back to reference Linnan L, Steckler A, In Process Evaluation for Public Health Interventions and Research: Process evaluation for public health interventions and research: an overview. 2002, San Francisco: Jossey-Bass: Edited by Steckler A & Linnan L, 1-24. Linnan L, Steckler A, In Process Evaluation for Public Health Interventions and Research: Process evaluation for public health interventions and research: an overview. 2002, San Francisco: Jossey-Bass: Edited by Steckler A & Linnan L, 1-24.
70.
go back to reference Cohen J: Statistical Power Analysis for the Behavioral Sciences 2nd edition. 1988, Hillsdale, New Jersey: Erlbaum Cohen J: Statistical Power Analysis for the Behavioral Sciences 2nd edition. 1988, Hillsdale, New Jersey: Erlbaum
71.
go back to reference Jacobson NS, Truax P: Clinical significance: a statistical approach to defining meaningful change in psychotherapy research. J Consult Clin Psychol. 1991, 59: 12-19.CrossRefPubMed Jacobson NS, Truax P: Clinical significance: a statistical approach to defining meaningful change in psychotherapy research. J Consult Clin Psychol. 1991, 59: 12-19.CrossRefPubMed
72.
go back to reference MacKinnon DP, In Scientific methods in prevention research: Analysis of mediating variables in prevention and intervention research. 1994, Washington DC: U. S. Government Printing Office: Edited by Cazares A & Beatty LA, 127-153. MacKinnon DP, In Scientific methods in prevention research: Analysis of mediating variables in prevention and intervention research. 1994, Washington DC: U. S. Government Printing Office: Edited by Cazares A & Beatty LA, 127-153.
73.
74.
go back to reference Fenwick E, O'Brien BJ, Briggs A: Cost-effectiveness acceptability curves–facts, fallacies and frequently asked questions. Health Econ. 2004, 13: 405-415. 10.1002/hec.903.CrossRefPubMed Fenwick E, O'Brien BJ, Briggs A: Cost-effectiveness acceptability curves–facts, fallacies and frequently asked questions. Health Econ. 2004, 13: 405-415. 10.1002/hec.903.CrossRefPubMed
75.
go back to reference Uegaki K: Economic evaluation of interventions for occupational health. 2009, PhD-thesis. Vrije University Amsterdam, Department of Medicine: Exploring methods & applied studies Uegaki K: Economic evaluation of interventions for occupational health. 2009, PhD-thesis. Vrije University Amsterdam, Department of Medicine: Exploring methods & applied studies
Metadata
Title
Web-based guided self-help for employees with depressive symptoms (Happy@Work): design of a randomized controlled trial
Authors
Anna S Geraedts
Annet M Kleiboer
Noortje M Wiezer
Willem van Mechelen
Pim Cuijpers
Publication date
01-12-2013
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2013
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/1471-244X-13-61

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