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Published in: Quality of Life Research 4/2015

Open Access 01-04-2015

Common patterns of morbidity and multi-morbidity and their impact on health-related quality of life: evidence from a national survey

Authors: R. E. Mujica-Mota, M. Roberts, G. Abel, M. Elliott, G. Lyratzopoulos, M. Roland, J. Campbell

Published in: Quality of Life Research | Issue 4/2015

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Abstract

Background

There is limited evidence about the impact of specific patterns of multi-morbidity on health-related quality of life (HRQoL) from large samples of adult subjects.

Methods

We used data from the English General Practice Patient Survey 2011–2012. We defined multi-morbidity as the presence of two or more of 12 self-reported conditions or another (unspecified) long-term health problem. We investigated differences in HRQoL (EQ-5D scores) associated with combinations of these conditions after adjusting for age, gender, ethnicity, socio-economic deprivation and the presence of a recent illness or injury. Analyses were based on 831,537 responses from patients aged 18 years or older in 8,254 primary care practices in England.

Results

Of respondents, 23 % reported two or more chronic conditions (ranging from 7 % of those under 45 years of age to 51 % of those 65 years or older). Multi-morbidity was more common among women, White individuals and respondents from socio-economically deprived areas. Neurological problems, mental health problems, arthritis and long-term back problem were associated with the greatest HRQoL deficits. The presence of three or more conditions was commonly associated with greater reduction in quality of life than that implied by the sum of the differences associated with the individual conditions. The decline in quality of life associated with an additional condition in people with two and three physical conditions was less for older people than for younger people. Multi-morbidity was associated with a substantially worse HRQoL in diabetes than in other long-term conditions. With the exception of neurological conditions, the presence of a comorbid mental health problem had a more adverse effect on HRQoL than any single comorbid physical condition.

Conclusion

Patients with multi-morbid diabetes, arthritis, neurological, or long-term mental health problems have significantly lower quality of life than other people. People with long-term health conditions require integrated mental and physical healthcare services.
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Literature
1.
go back to reference Saarni, S. I., Harkanen, T., Sintonen, H., Suvisaari, J., Koskinen, S., Aromaa, A., et al. (2006). The impact of 29 chronic conditions on health-related quality of life: A general population survey in Finland using 15D and EQ-5D. Quality of Life Research, 15(8), 1403–1414.CrossRefPubMed Saarni, S. I., Harkanen, T., Sintonen, H., Suvisaari, J., Koskinen, S., Aromaa, A., et al. (2006). The impact of 29 chronic conditions on health-related quality of life: A general population survey in Finland using 15D and EQ-5D. Quality of Life Research, 15(8), 1403–1414.CrossRefPubMed
2.
go back to reference Brettschneider, C., Leicht, H., Bickel, H., Dahlhaus, A., Fuchs, A., Gensichen, J., et al. (2013). (MultiCare Study Group). Relative impact of multimorbid chronic conditions on health-related quality of life–results from the MultiCare Cohort Study. PLoS One, 8(6), e66742.CrossRefPubMedCentralPubMed Brettschneider, C., Leicht, H., Bickel, H., Dahlhaus, A., Fuchs, A., Gensichen, J., et al. (2013). (MultiCare Study Group). Relative impact of multimorbid chronic conditions on health-related quality of life–results from the MultiCare Cohort Study. PLoS One, 8(6), e66742.CrossRefPubMedCentralPubMed
3.
go back to reference Whiteford, H., Degenhardt, L., Rehm, J., Baxter, A., Farrari, A., Erskine, H., et al. (2013). Global burden of disease attributable to mental and substance misuse disorders: Findings from the Global Burden of Disease Study 2010. Lancet, 382, 1575–1586.CrossRefPubMed Whiteford, H., Degenhardt, L., Rehm, J., Baxter, A., Farrari, A., Erskine, H., et al. (2013). Global burden of disease attributable to mental and substance misuse disorders: Findings from the Global Burden of Disease Study 2010. Lancet, 382, 1575–1586.CrossRefPubMed
4.
go back to reference Alonso, J., Ferrer, M., Gandek, B., Ware, J. E, Jr, Aaronson, N. K., Mosconi, P., et al. (2004). Health-related quality of life associated with chronic conditions in eight countries: Results from the International Quality of Life Assessment (IQOLA) Project. Quality of Life Research, 13(2), 283–298.CrossRefPubMed Alonso, J., Ferrer, M., Gandek, B., Ware, J. E, Jr, Aaronson, N. K., Mosconi, P., et al. (2004). Health-related quality of life associated with chronic conditions in eight countries: Results from the International Quality of Life Assessment (IQOLA) Project. Quality of Life Research, 13(2), 283–298.CrossRefPubMed
5.
go back to reference Bhattarai, N., Charlton, J., Rudisill, C., & Gulliford, M. C. (2013). Prevalence of depression and utilization of health care in single and multiple morbidity: A population-based cohort study. Psychological Medicine, 43(7), 1423–1431.CrossRefPubMed Bhattarai, N., Charlton, J., Rudisill, C., & Gulliford, M. C. (2013). Prevalence of depression and utilization of health care in single and multiple morbidity: A population-based cohort study. Psychological Medicine, 43(7), 1423–1431.CrossRefPubMed
6.
go back to reference Onubogu, U. D. (2014). Pain and depression in older adults with arthritis. Orthopaedic Nursing, 33(2), 102–108.CrossRefPubMed Onubogu, U. D. (2014). Pain and depression in older adults with arthritis. Orthopaedic Nursing, 33(2), 102–108.CrossRefPubMed
7.
go back to reference Rast, P., Rush, J., Piccinin, A., & Hofer, S. M. (2014). The identification of regions of significance in the effect of multimorbidity on depressive symptoms using longitudinal data: An application of the Johnson-Neyman technique. Gerontology, 60(3), 274–281.CrossRefPubMedCentralPubMed Rast, P., Rush, J., Piccinin, A., & Hofer, S. M. (2014). The identification of regions of significance in the effect of multimorbidity on depressive symptoms using longitudinal data: An application of the Johnson-Neyman technique. Gerontology, 60(3), 274–281.CrossRefPubMedCentralPubMed
8.
go back to reference Fortin, M., Lapointe, L., Hudon, C., Vanasse, A., Ntetu, A. L., & Maltais, D. (2004). Multimorbidity and quality of life in primary care: a systematic review. Health and Quality of Life Outcomes, 20(2), 51.CrossRef Fortin, M., Lapointe, L., Hudon, C., Vanasse, A., Ntetu, A. L., & Maltais, D. (2004). Multimorbidity and quality of life in primary care: a systematic review. Health and Quality of Life Outcomes, 20(2), 51.CrossRef
9.
go back to reference Barnett, K., Mercer, S. W., Norbury, M., Watt, G., Wyke, S., & Guthrie, B. (2012). Epidemiology of multimorbidity and implications for health care, research and medical education: a cross-sectional study. The Lancet, 380(9836), 37–43.CrossRef Barnett, K., Mercer, S. W., Norbury, M., Watt, G., Wyke, S., & Guthrie, B. (2012). Epidemiology of multimorbidity and implications for health care, research and medical education: a cross-sectional study. The Lancet, 380(9836), 37–43.CrossRef
10.
go back to reference Lawson, K. D., Mercer, S. W., Wyke, S., Grieve, E., Guthrie, B., Watt, G. C., et al. (2013). Double trouble: The impact of multimorbidity and deprivation on preference-weighted health-related quality of life a cross sectional analysis of the Scottish Health Survey. International Journal for Equity in Health, 12(1), 67. doi:10.1186/1475-9276-12-67.CrossRefPubMedCentralPubMed Lawson, K. D., Mercer, S. W., Wyke, S., Grieve, E., Guthrie, B., Watt, G. C., et al. (2013). Double trouble: The impact of multimorbidity and deprivation on preference-weighted health-related quality of life a cross sectional analysis of the Scottish Health Survey. International Journal for Equity in Health, 12(1), 67. doi:10.​1186/​1475-9276-12-67.CrossRefPubMedCentralPubMed
12.
go back to reference Fried, L. P., Bandeen-Roche, K., Kasper, J. D., et al. (1999). Association of comorbidity with disability in older women: the Women’s Health and Aging Study. Journal of Clinical Epidemiology, 52, 27–37.CrossRefPubMed Fried, L. P., Bandeen-Roche, K., Kasper, J. D., et al. (1999). Association of comorbidity with disability in older women: the Women’s Health and Aging Study. Journal of Clinical Epidemiology, 52, 27–37.CrossRefPubMed
13.
go back to reference Fultz, N. H., Ofstedal, M. B., Herzog, A. R., & Wallace, R. B. (2003). Additive and interactive effects of comorbid physical and mental conditions on functional health. Journal of Aging and Health, 15, 465–481.CrossRefPubMed Fultz, N. H., Ofstedal, M. B., Herzog, A. R., & Wallace, R. B. (2003). Additive and interactive effects of comorbid physical and mental conditions on functional health. Journal of Aging and Health, 15, 465–481.CrossRefPubMed
14.
go back to reference Hodek, J. M., Ruhe, A. K., & Greiner, W. (2010). Relationship between health-related quality of life and multimorbidity. Gesundheitswesen, 72(8–9), 455–465.CrossRefPubMed Hodek, J. M., Ruhe, A. K., & Greiner, W. (2010). Relationship between health-related quality of life and multimorbidity. Gesundheitswesen, 72(8–9), 455–465.CrossRefPubMed
15.
go back to reference Fortin, M., Dubois, M.-F., Hudon, C., Soubhi, H., & Almirall, J. (2007). Multimorbidity and quality of life: A closer look. Health and Quality of Life Outcomes, 5, 52.CrossRefPubMedCentralPubMed Fortin, M., Dubois, M.-F., Hudon, C., Soubhi, H., & Almirall, J. (2007). Multimorbidity and quality of life: A closer look. Health and Quality of Life Outcomes, 5, 52.CrossRefPubMedCentralPubMed
16.
go back to reference Hunger, M., Thorand, B., Schunk, M., Doring, A., Menn, P., Peters, A., et al. (2011). Multimorbidity and health-related quality of life in the older population: Results from the German KORA-age study. Health and Quality of Life Outcomes, 9, 53.CrossRefPubMedCentralPubMed Hunger, M., Thorand, B., Schunk, M., Doring, A., Menn, P., Peters, A., et al. (2011). Multimorbidity and health-related quality of life in the older population: Results from the German KORA-age study. Health and Quality of Life Outcomes, 9, 53.CrossRefPubMedCentralPubMed
17.
go back to reference McDaid, O., Hanly, M.J., Richardson K., Kee F., Kenny R.A., Savva G.M. et al. (2013). The effect of multiple chronic conditions on self-rated health, disability and quality of life among the older populations of Northern Ireland and the Republic of Ireland: A comparison of two nationally representative cross-sectional surveys. BMJ Open , 3(6), e002571. doi:10.1136/bmjopen-2013-002571. McDaid, O., Hanly, M.J., Richardson K., Kee F., Kenny R.A., Savva G.M. et al. (2013). The effect of multiple chronic conditions on self-rated health, disability and quality of life among the older populations of Northern Ireland and the Republic of Ireland: A comparison of two nationally representative cross-sectional surveys. BMJ Open , 3(6), e002571. doi:10.​1136/​bmjopen-2013-002571.
18.
go back to reference Sullivan, P. W., Ghushchyan, V. H., & Bayliss, E. A. (2012). The impact of co-morbidity burden on preference-based health-related quality of life in the United States. Pharmacoeconomics, 30(5), 431–442.CrossRefPubMed Sullivan, P. W., Ghushchyan, V. H., & Bayliss, E. A. (2012). The impact of co-morbidity burden on preference-based health-related quality of life in the United States. Pharmacoeconomics, 30(5), 431–442.CrossRefPubMed
19.
go back to reference Agborsangaya, C. B., Lahtinen, M., Cooke, T., & Johnson, J. A. (2014). Comparing the EQ-5D 3L and 5L: Measurement properties and association with chronic conditions and multimorbidity in the general population. Health and Quality of Life Outcomes, 12, 74.CrossRefPubMedCentralPubMed Agborsangaya, C. B., Lahtinen, M., Cooke, T., & Johnson, J. A. (2014). Comparing the EQ-5D 3L and 5L: Measurement properties and association with chronic conditions and multimorbidity in the general population. Health and Quality of Life Outcomes, 12, 74.CrossRefPubMedCentralPubMed
20.
go back to reference Campbell, J., Smith, P., Nissen, S., Bower, P., Elliott, M., & Roland, M. (2009). The GP Patient Survey for use in primary care in the National Health Service in the UK—Development and psychometric characteristics. BMC Family Practice, 10, 57.CrossRefPubMedCentralPubMed Campbell, J., Smith, P., Nissen, S., Bower, P., Elliott, M., & Roland, M. (2009). The GP Patient Survey for use in primary care in the National Health Service in the UK—Development and psychometric characteristics. BMC Family Practice, 10, 57.CrossRefPubMedCentralPubMed
22.
go back to reference Euroqol Group. (1990). EuroQoL—A new facility for the measurement of health-related quality of life. Health Policy, 16, 199–208.CrossRef Euroqol Group. (1990). EuroQoL—A new facility for the measurement of health-related quality of life. Health Policy, 16, 199–208.CrossRef
23.
go back to reference Dolan, P., Gudex, C., Kind, P., & Williams, A. (1996). Valuing health states: A comparison of methods. Journal of Health Economics, 15(2), 209–231.CrossRefPubMed Dolan, P., Gudex, C., Kind, P., & Williams, A. (1996). Valuing health states: A comparison of methods. Journal of Health Economics, 15(2), 209–231.CrossRefPubMed
24.
go back to reference Clemens, J. Q., Elliott, M. N., Suttorp, M., & Berry, S. (2012). Temporal ordering of interstitial cystitis/bladder pain syndrome (IC/BPS) and non-bladder conditions. Urology, 80(6), 1231–1232.CrossRef Clemens, J. Q., Elliott, M. N., Suttorp, M., & Berry, S. (2012). Temporal ordering of interstitial cystitis/bladder pain syndrome (IC/BPS) and non-bladder conditions. Urology, 80(6), 1231–1232.CrossRef
25.
go back to reference Fan, J., & Gijbels, I. (1992). Variable bandwidth and local linear regression smoothers. Annals of Statistics, 20(4), 2008–2036.CrossRef Fan, J., & Gijbels, I. (1992). Variable bandwidth and local linear regression smoothers. Annals of Statistics, 20(4), 2008–2036.CrossRef
27.
go back to reference Walters, S. J., & Brazier, J. E. (2005 ). Comparison of the minimally important difference for two health state utility measures: EQ-5D and SF-6D. Quality of Life Research, 14(6), 1523–1532.CrossRefPubMed Walters, S. J., & Brazier, J. E. (2005 ). Comparison of the minimally important difference for two health state utility measures: EQ-5D and SF-6D. Quality of Life Research, 14(6), 1523–1532.CrossRefPubMed
28.
go back to reference Kaplan, R. M. (2005). The minimally clinically important difference in generic utility-based measures. COPD, 2, 91–97.CrossRefPubMed Kaplan, R. M. (2005). The minimally clinically important difference in generic utility-based measures. COPD, 2, 91–97.CrossRefPubMed
29.
go back to reference Bloom, D. E., & Killingsworth, M. R. (1985). Correcting for truncation bias caused by a latent truncation variable. Journal of Econometrics, 27, 131–135.CrossRef Bloom, D. E., & Killingsworth, M. R. (1985). Correcting for truncation bias caused by a latent truncation variable. Journal of Econometrics, 27, 131–135.CrossRef
30.
go back to reference Heckman, J. J. (1978). Dummy endogenous variables in a simultaneous equation system. Econometrica, 46, 931–959.CrossRef Heckman, J. J. (1978). Dummy endogenous variables in a simultaneous equation system. Econometrica, 46, 931–959.CrossRef
32.
go back to reference White, H. (1980). A heteroskedasticity-consistent covariance matrix estimator and a direct test for heteroskedasticity. Econometrica, 48, 817–838.CrossRef White, H. (1980). A heteroskedasticity-consistent covariance matrix estimator and a direct test for heteroskedasticity. Econometrica, 48, 817–838.CrossRef
33.
go back to reference Mousavi, S., Chatterji, S., Verdes, E., Tandon, A., & Patel VikramUstun, B. (2007). Depression, chronic diseases, and decrements in health.: results from the World Health Survey. The Lancet, 370, 851–858.CrossRef Mousavi, S., Chatterji, S., Verdes, E., Tandon, A., & Patel VikramUstun, B. (2007). Depression, chronic diseases, and decrements in health.: results from the World Health Survey. The Lancet, 370, 851–858.CrossRef
34.
go back to reference Hays, R., Reeve, B. R., Smith, A. W., & Clauser, S. B. (2014). Associations of cancer and other chronic medical conditions with SF-6D preference based scores in Medicare beneficiaries. Quality of Life Research, 23(2), 385–391.CrossRefPubMedCentralPubMed Hays, R., Reeve, B. R., Smith, A. W., & Clauser, S. B. (2014). Associations of cancer and other chronic medical conditions with SF-6D preference based scores in Medicare beneficiaries. Quality of Life Research, 23(2), 385–391.CrossRefPubMedCentralPubMed
35.
go back to reference Sullivan, P. W., Lawrence, W. F., & Ghushchyan, V. (2005). A national catalog of preference-based scores for chronic conditions in the United States. Medical Care, 43, 736–740.CrossRefPubMed Sullivan, P. W., Lawrence, W. F., & Ghushchyan, V. (2005). A national catalog of preference-based scores for chronic conditions in the United States. Medical Care, 43, 736–740.CrossRefPubMed
37.
go back to reference Luo, N., Wang, P., Fu, A., Johnson, J., & Coons, S. J. (2012). Preference-based SF-6D scores derived from the SF-36 and SF-12 have different discriminative power in a population health survey. Medical Care, 50(7), 627–632.CrossRefPubMed Luo, N., Wang, P., Fu, A., Johnson, J., & Coons, S. J. (2012). Preference-based SF-6D scores derived from the SF-36 and SF-12 have different discriminative power in a population health survey. Medical Care, 50(7), 627–632.CrossRefPubMed
38.
go back to reference Holland, R., Smith, R. D., Harvey, I., Swift, L., & Lenaghan, E. (2004). Assessing quality of life in the elderly: A direct comparison of the EQ-5D and AQoL. Health Economics, 13, 793–805.CrossRefPubMed Holland, R., Smith, R. D., Harvey, I., Swift, L., & Lenaghan, E. (2004). Assessing quality of life in the elderly: A direct comparison of the EQ-5D and AQoL. Health Economics, 13, 793–805.CrossRefPubMed
39.
go back to reference Brazier, J., Ratcliffe, J., Salomon, J. A., & Tsuchiya, A. (2007). Measuring and valuing health benefits for economic evaluation. Oxford: Oxford University Press. Brazier, J., Ratcliffe, J., Salomon, J. A., & Tsuchiya, A. (2007). Measuring and valuing health benefits for economic evaluation. Oxford: Oxford University Press.
40.
go back to reference Berkanovic, E., & Telesky, C. (1985). Mexican-American, black-American and white-American differences in reporting illnesses, disability and physician visits for illnesses. Social Science and Medicine, 20, 567–577.CrossRefPubMed Berkanovic, E., & Telesky, C. (1985). Mexican-American, black-American and white-American differences in reporting illnesses, disability and physician visits for illnesses. Social Science and Medicine, 20, 567–577.CrossRefPubMed
41.
go back to reference Johnson, T.P., O’Rourke, D., Chavez, N., Sudman, S. (1996). Cultural variations in the interpretation of health survey questions. In: Warnecke RB (ed), Health Survey Research Methods. National Center for Health Statistics (. pp. 57–62). Hyattsville: MD. Johnson, T.P., O’Rourke, D., Chavez, N., Sudman, S. (1996). Cultural variations in the interpretation of health survey questions. In: Warnecke RB (ed), Health Survey Research Methods. National Center for Health Statistics (. pp. 57–62). Hyattsville: MD.
42.
go back to reference Stewart, A. L., & Napoles-Springer, A. (2000). Health-related quality-of-life assessments in diverse population groups in the United States. Medical Care, 38(9 Suppl), II102–II124.PubMed Stewart, A. L., & Napoles-Springer, A. (2000). Health-related quality-of-life assessments in diverse population groups in the United States. Medical Care, 38(9 Suppl), II102–II124.PubMed
43.
go back to reference Cassano, P., & Fava, M. (2002). Depression and public health: And overview. Journal of Psychosomatic Research, 53, 849–857.CrossRefPubMed Cassano, P., & Fava, M. (2002). Depression and public health: And overview. Journal of Psychosomatic Research, 53, 849–857.CrossRefPubMed
44.
go back to reference Groves, R. M. (2006). Nonresponse rates and nonresponse bias in household surveys. Public Opinion Quarterly, 70(5), 646–675. Groves, R. M. (2006). Nonresponse rates and nonresponse bias in household surveys. Public Opinion Quarterly, 70(5), 646–675.
45.
go back to reference Klein, D. J., Elliott, M. N., Haviland, A. M., Saliba, D., Burkhart, Q., Edwards, C., et al. (2011). Understanding nonresponse to the 2007 Medicare CAHPS survey. The Gerontologist, 51(6), 843–855.CrossRefPubMed Klein, D. J., Elliott, M. N., Haviland, A. M., Saliba, D., Burkhart, Q., Edwards, C., et al. (2011). Understanding nonresponse to the 2007 Medicare CAHPS survey. The Gerontologist, 51(6), 843–855.CrossRefPubMed
46.
go back to reference Paddison, C., Elliott, M., Parker, R., Staestsky, L., Lyratzopoulos, G., Campbell, J. L., et al. (2012). Should measures of patient experience in primary care be adjusted for case mix? Evidence from the English General Practice Patient Survey. BMJ Quality & Safety, 21(8), 634–640.CrossRef Paddison, C., Elliott, M., Parker, R., Staestsky, L., Lyratzopoulos, G., Campbell, J. L., et al. (2012). Should measures of patient experience in primary care be adjusted for case mix? Evidence from the English General Practice Patient Survey. BMJ Quality & Safety, 21(8), 634–640.CrossRef
47.
go back to reference Gonzalez, J. S., Peyrot, M., McCarl, L. A., Collins, E. M., Serpa, L., Mimaga, M. J., et al. (2008). Depression and diabetes treatment nonadherence: A meta-analysis. Diabetes Care, 31(12), 2398–2403.CrossRefPubMedCentralPubMed Gonzalez, J. S., Peyrot, M., McCarl, L. A., Collins, E. M., Serpa, L., Mimaga, M. J., et al. (2008). Depression and diabetes treatment nonadherence: A meta-analysis. Diabetes Care, 31(12), 2398–2403.CrossRefPubMedCentralPubMed
48.
go back to reference Lustman, P. J., Anderson, R. J., Freedland, K. E., De Groot, M., Carney, R. M., & Clouse, R. E. (2000). Depression and poor glycemic control: A meta-analytic review of the literature. Diabetes Care, 23(7), 934–942.CrossRefPubMed Lustman, P. J., Anderson, R. J., Freedland, K. E., De Groot, M., Carney, R. M., & Clouse, R. E. (2000). Depression and poor glycemic control: A meta-analytic review of the literature. Diabetes Care, 23(7), 934–942.CrossRefPubMed
49.
go back to reference De Groot, M., Anderson, R., Freedland, K. E., Clouse, R. E., & Lustman, P. J. (2001). Association of depression and diabetes complications: A meta-analysis. Psychosomatic Medicine, 63(4), 619–630.CrossRefPubMed De Groot, M., Anderson, R., Freedland, K. E., Clouse, R. E., & Lustman, P. J. (2001). Association of depression and diabetes complications: A meta-analysis. Psychosomatic Medicine, 63(4), 619–630.CrossRefPubMed
50.
go back to reference Salisbury, C., Johnson, L., Purdy, S., Valderas, J. M., & Montgomery, A. A. (2011). Epidemiology and impact of multimorbidity in primary care: a retrospective cohort study. British Journal of General Practice, 61(582), e12–e21.CrossRefPubMedCentralPubMed Salisbury, C., Johnson, L., Purdy, S., Valderas, J. M., & Montgomery, A. A. (2011). Epidemiology and impact of multimorbidity in primary care: a retrospective cohort study. British Journal of General Practice, 61(582), e12–e21.CrossRefPubMedCentralPubMed
Metadata
Title
Common patterns of morbidity and multi-morbidity and their impact on health-related quality of life: evidence from a national survey
Authors
R. E. Mujica-Mota
M. Roberts
G. Abel
M. Elliott
G. Lyratzopoulos
M. Roland
J. Campbell
Publication date
01-04-2015
Publisher
Springer International Publishing
Published in
Quality of Life Research / Issue 4/2015
Print ISSN: 0962-9343
Electronic ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-014-0820-7

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