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Published in: BMC Medical Research Methodology 1/2011

Open Access 01-12-2011 | Research article

A review of equity issues in quantitative studies on health inequalities: the case of asthma in adults

Authors: Heather L Greenwood, Nancy Edwards, Amandah Hoogbruin, Eulalia K Kahwa, Okeyo N Odhiambo, Jack A Buong

Published in: BMC Medical Research Methodology | Issue 1/2011

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Abstract

Background

The term 'inequities' refers to avoidable differences rooted in injustice. This review examined whether or not, and how, quantitative studies identifying inequalities in risk factors and health service utilization for asthma explicitly addressed underlying inequities. Asthma was chosen because recent decades have seen strong increases in asthma prevalence in many international settings, and inequalities in risk factors and related outcomes.

Methods

A review was conducted of studies that identified social inequalities in asthma-related outcomes or health service use in adult populations. Data were extracted on use of equity terms (objective evidence), and discussion of equity issues without using the exact terms (subjective evidence).

Results

Of the 219 unique articles retrieved, 21 were eligible for inclusion. None used the terms equity/inequity. While all but one article traced at least partial pathways to inequity, only 52% proposed any intervention and 55% of these interventions focused exclusively on the more proximal, clinical level.

Conclusions

Without more in-depth and systematic examination of inequities underlying asthma prevalence, quantitative studies may fail to provide the evidence required to inform equity-oriented interventions to address underlying circumstances restricting opportunities for health.
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Literature
1.
go back to reference Whitehead M: The concepts and principles of equity and health. Health Promot Int. 1991, 6: 217-228. 10.1093/heapro/6.3.217.CrossRef Whitehead M: The concepts and principles of equity and health. Health Promot Int. 1991, 6: 217-228. 10.1093/heapro/6.3.217.CrossRef
3.
go back to reference Braveman P: Health disparities and health equity: concept and measurement. Annu Rev Public Health. 2006, 27: 167-194. 10.1146/annurev.publhealth.27.021405.102103.CrossRefPubMed Braveman P: Health disparities and health equity: concept and measurement. Annu Rev Public Health. 2006, 27: 167-194. 10.1146/annurev.publhealth.27.021405.102103.CrossRefPubMed
4.
go back to reference WHO: Closing the Gap in a Generation: Health Equity Through Action on the Social Determinants of Health. 2008, Geneva: World Health Organization WHO: Closing the Gap in a Generation: Health Equity Through Action on the Social Determinants of Health. 2008, Geneva: World Health Organization
5.
go back to reference Krieger N: Proximal, distal, and the politics of causation: what's level got to do with it?. Am J Public Health. 2008, 98: 221-230. 10.2105/AJPH.2007.111278.CrossRefPubMedPubMedCentral Krieger N: Proximal, distal, and the politics of causation: what's level got to do with it?. Am J Public Health. 2008, 98: 221-230. 10.2105/AJPH.2007.111278.CrossRefPubMedPubMedCentral
6.
go back to reference Krieger N: Epidemiology and the web of causation: has anyone seen the spider?. Soc Sci Med. 1994, 39: 887-903. 10.1016/0277-9536(94)90202-X.CrossRefPubMed Krieger N: Epidemiology and the web of causation: has anyone seen the spider?. Soc Sci Med. 1994, 39: 887-903. 10.1016/0277-9536(94)90202-X.CrossRefPubMed
7.
go back to reference Subramanian SV, Jones K, Kaddour A, Krieger N: Revisiting Robinson: the perils of individualistic and ecologic fallacy. Int J Epidemiol. 2009, 38: 342-360.CrossRefPubMedPubMedCentral Subramanian SV, Jones K, Kaddour A, Krieger N: Revisiting Robinson: the perils of individualistic and ecologic fallacy. Int J Epidemiol. 2009, 38: 342-360.CrossRefPubMedPubMedCentral
8.
go back to reference Starfield B: Pathways of influence on equity in health. Soc Sci Med. 2007, 64: 1355-1362. 10.1016/j.socscimed.2006.11.027.CrossRefPubMed Starfield B: Pathways of influence on equity in health. Soc Sci Med. 2007, 64: 1355-1362. 10.1016/j.socscimed.2006.11.027.CrossRefPubMed
9.
go back to reference Masoli M, Fabian D, Holt D, Beasley R: The global burden of asthma: executive summary of the GINA Dissemination Committee report. Allergy. 2004, 59: 469-478. 10.1111/j.1398-9995.2004.00526.x.CrossRefPubMed Masoli M, Fabian D, Holt D, Beasley R: The global burden of asthma: executive summary of the GINA Dissemination Committee report. Allergy. 2004, 59: 469-478. 10.1111/j.1398-9995.2004.00526.x.CrossRefPubMed
10.
go back to reference Bousquet J, Bousquet PJ, Goddard P, Daures J: The public health implications of asthma. Bull World Health Organ. 2005, 83: 548-554.PubMedPubMedCentral Bousquet J, Bousquet PJ, Goddard P, Daures J: The public health implications of asthma. Bull World Health Organ. 2005, 83: 548-554.PubMedPubMedCentral
11.
go back to reference Pearce N, Ait-Khaled N, Beasley R, Mallol J, Keil U, Mitchell E, Robertson C: Worldwide trends in the prevalence of asthma symptoms: phase III of the International Study of Asthma and Allergies in Childhood (ISAAC). Thorax. 2007, 62: 758-766. 10.1136/thx.2006.070169.CrossRefPubMedPubMedCentral Pearce N, Ait-Khaled N, Beasley R, Mallol J, Keil U, Mitchell E, Robertson C: Worldwide trends in the prevalence of asthma symptoms: phase III of the International Study of Asthma and Allergies in Childhood (ISAAC). Thorax. 2007, 62: 758-766. 10.1136/thx.2006.070169.CrossRefPubMedPubMedCentral
12.
go back to reference Cooper PJ, Rodrigues LC, Cruz AA, Barreto ML: Asthma in Latin America: a public heath challenge and research opportunity. Allergy. 2009, 64: 5-17. 10.1111/j.1398-9995.2008.01902.x.CrossRefPubMed Cooper PJ, Rodrigues LC, Cruz AA, Barreto ML: Asthma in Latin America: a public heath challenge and research opportunity. Allergy. 2009, 64: 5-17. 10.1111/j.1398-9995.2008.01902.x.CrossRefPubMed
13.
go back to reference Basagna X, Sunyer J, Kogevinas M, Zock JP, Duran-Taurelia E, Jarvis D, Burney P, Anto JM: Socioeconomic status and asthma prevalence in young adults. the European respiratory health survey. Am J Epidemiol. 2004, 160: 178-188. 10.1093/aje/kwh186.CrossRef Basagna X, Sunyer J, Kogevinas M, Zock JP, Duran-Taurelia E, Jarvis D, Burney P, Anto JM: Socioeconomic status and asthma prevalence in young adults. the European respiratory health survey. Am J Epidemiol. 2004, 160: 178-188. 10.1093/aje/kwh186.CrossRef
14.
go back to reference Gold R, Wright R: Population disparities in asthma. Annu Rev Public Health. 2005, 26: 89-113. 10.1146/annurev.publhealth.26.021304.144528.CrossRefPubMed Gold R, Wright R: Population disparities in asthma. Annu Rev Public Health. 2005, 26: 89-113. 10.1146/annurev.publhealth.26.021304.144528.CrossRefPubMed
15.
go back to reference Dumanovsky T, Matte TD: Variations in adult asthma prevalence in Hispanic populations in New York City. J Asthma. 2007, 44: 279-303.CrossRef Dumanovsky T, Matte TD: Variations in adult asthma prevalence in Hispanic populations in New York City. J Asthma. 2007, 44: 279-303.CrossRef
16.
go back to reference Weiss KB, Gergen PJ, Crain EF: Inner-city asthma: the epidemiology of an emerging US public health concern. Chest. 1992, 101: 362-367. 10.1378/chest.101.2.362.CrossRef Weiss KB, Gergen PJ, Crain EF: Inner-city asthma: the epidemiology of an emerging US public health concern. Chest. 1992, 101: 362-367. 10.1378/chest.101.2.362.CrossRef
17.
go back to reference Rauh VA, Chew GL, Garfinkel RS: Deteriorated housing contributes to high cockroach allergen levels in inner-city households. Environ Health Perspect. 2002, 110: 323-327. 10.1289/ehp.02110s2323.CrossRefPubMedPubMedCentral Rauh VA, Chew GL, Garfinkel RS: Deteriorated housing contributes to high cockroach allergen levels in inner-city households. Environ Health Perspect. 2002, 110: 323-327. 10.1289/ehp.02110s2323.CrossRefPubMedPubMedCentral
18.
go back to reference Bryant-Stephens T: Asthma disparities in urban environments. J Allergy Clin Immunol. 2009, 123: 1199-1206. 10.1016/j.jaci.2009.04.030.CrossRefPubMed Bryant-Stephens T: Asthma disparities in urban environments. J Allergy Clin Immunol. 2009, 123: 1199-1206. 10.1016/j.jaci.2009.04.030.CrossRefPubMed
19.
go back to reference Braman SS: The global burden of asthma. Chest. 2006, 130: 4-12. 10.1378/chest.130.1_suppl.4S.CrossRef Braman SS: The global burden of asthma. Chest. 2006, 130: 4-12. 10.1378/chest.130.1_suppl.4S.CrossRef
20.
go back to reference Wright RJ, Steibach SF: Violence: an unrecognised environmental exposure that may contribute to greater asthma morbidity in high-risk inner-city populations. Environ Health Perspect. 2001, 109: 1085-1089. 10.1289/ehp.011091085.CrossRefPubMedPubMedCentral Wright RJ, Steibach SF: Violence: an unrecognised environmental exposure that may contribute to greater asthma morbidity in high-risk inner-city populations. Environ Health Perspect. 2001, 109: 1085-1089. 10.1289/ehp.011091085.CrossRefPubMedPubMedCentral
21.
go back to reference Glass TA, McAtee MJ: Behavioral science at the crossroads in public health: extending horizons, envisioning the future. Soc Sci Med. 2006, 62: 1650-1671. 10.1016/j.socscimed.2005.08.044.CrossRefPubMed Glass TA, McAtee MJ: Behavioral science at the crossroads in public health: extending horizons, envisioning the future. Soc Sci Med. 2006, 62: 1650-1671. 10.1016/j.socscimed.2005.08.044.CrossRefPubMed
22.
go back to reference Braveman P: Monitoring Equity in Health: a Policy-Oriented Approach in Low- and Middle-Income Countries. 1998, Geneva, Switzerland: World Health Organization Braveman P: Monitoring Equity in Health: a Policy-Oriented Approach in Low- and Middle-Income Countries. 1998, Geneva, Switzerland: World Health Organization
23.
go back to reference Caldeira RD, Bettiol H, Barbieri MA, Terra-Filho J, Garcia CA, Vianna EO: Prevalence and risk factors for work-related asthma in young adults. Occup Environ Med. 2006, 63: 694-699. 10.1136/oem.2005.025916.CrossRefPubMedPubMedCentral Caldeira RD, Bettiol H, Barbieri MA, Terra-Filho J, Garcia CA, Vianna EO: Prevalence and risk factors for work-related asthma in young adults. Occup Environ Med. 2006, 63: 694-699. 10.1136/oem.2005.025916.CrossRefPubMedPubMedCentral
24.
go back to reference Braback L, Hjern A, Rasmussen F: Social class in asthma and allergic rhinitis: a national cohort study over three decades. Eur Respir J. 2005, 26: 1064-1068. 10.1183/09031936.05.00022105.CrossRefPubMed Braback L, Hjern A, Rasmussen F: Social class in asthma and allergic rhinitis: a national cohort study over three decades. Eur Respir J. 2005, 26: 1064-1068. 10.1183/09031936.05.00022105.CrossRefPubMed
25.
go back to reference Haselkorn T, Lee JH, Mink DR, Weiss ST: Racial disparities in asthma-related health outcomes in severe or difficult-to-treat asthma. Ann Allergy Asthma Immunol. 2008, 101: 256-263. 10.1016/S1081-1206(10)60490-5.CrossRefPubMed Haselkorn T, Lee JH, Mink DR, Weiss ST: Racial disparities in asthma-related health outcomes in severe or difficult-to-treat asthma. Ann Allergy Asthma Immunol. 2008, 101: 256-263. 10.1016/S1081-1206(10)60490-5.CrossRefPubMed
26.
go back to reference Peters AT, Klemens JC, Haselkorn T, Weiss ST, Grammer LC, Lee JH, Chen H: Insurance status and asthma-related health care utlilization in patients with severe asthma. Ann Allergy Asthma Immunol. 2008, 100: 301-307. 10.1016/S1081-1206(10)60590-X.CrossRefPubMed Peters AT, Klemens JC, Haselkorn T, Weiss ST, Grammer LC, Lee JH, Chen H: Insurance status and asthma-related health care utlilization in patients with severe asthma. Ann Allergy Asthma Immunol. 2008, 100: 301-307. 10.1016/S1081-1206(10)60590-X.CrossRefPubMed
27.
go back to reference Arif AA, Shah SM: Association between personal exposure to volatile organic compounds and asthma among US adult population. Int Arch Occup Environ Health. 2007, 80: 711-719. 10.1007/s00420-007-0183-2.CrossRefPubMed Arif AA, Shah SM: Association between personal exposure to volatile organic compounds and asthma among US adult population. Int Arch Occup Environ Health. 2007, 80: 711-719. 10.1007/s00420-007-0183-2.CrossRefPubMed
28.
go back to reference Markovitz BP, Andresen EM: Lack of insurance coverage and urgent care use for asthma: a retrospective cohort study. BMC Public Health. 2006, 6: 14-10.1186/1471-2458-6-14.CrossRefPubMedPubMedCentral Markovitz BP, Andresen EM: Lack of insurance coverage and urgent care use for asthma: a retrospective cohort study. BMC Public Health. 2006, 6: 14-10.1186/1471-2458-6-14.CrossRefPubMedPubMedCentral
29.
go back to reference Rose D, Mannino DM, Leaderer BP: Asthma prevalence among US adults, 1998-2000: role of Puerto Rican ethnicity and behavioral and geographic factors. Am J Public Health. 2006, 96: 880-888. 10.2105/AJPH.2004.050039.CrossRefPubMedPubMedCentral Rose D, Mannino DM, Leaderer BP: Asthma prevalence among US adults, 1998-2000: role of Puerto Rican ethnicity and behavioral and geographic factors. Am J Public Health. 2006, 96: 880-888. 10.2105/AJPH.2004.050039.CrossRefPubMedPubMedCentral
30.
go back to reference Smith SM, Mitchell C, Bowler SD, Heneghan C, Perera R: The health behavior and clinical characteristics of ambulance users with acute asthma. Emerg Med J. 2009, 26: 187-192. 10.1136/emj.2008.059188.CrossRefPubMed Smith SM, Mitchell C, Bowler SD, Heneghan C, Perera R: The health behavior and clinical characteristics of ambulance users with acute asthma. Emerg Med J. 2009, 26: 187-192. 10.1136/emj.2008.059188.CrossRefPubMed
31.
go back to reference Baptist AP, Warrier I, Arora R, Ager J, Massanari RM: Hospitalized patients with asthma who leave against medical advice: characteristics, reasons, and outcomes. J Allergy Clin Immunol. 2007, 119: 924-929. 10.1016/j.jaci.2006.11.695.CrossRefPubMed Baptist AP, Warrier I, Arora R, Ager J, Massanari RM: Hospitalized patients with asthma who leave against medical advice: characteristics, reasons, and outcomes. J Allergy Clin Immunol. 2007, 119: 924-929. 10.1016/j.jaci.2006.11.695.CrossRefPubMed
32.
go back to reference Berger Z, Rom WN, Reibman J, Kim M, Zhang S, Luo L, Friedman-Jimenez G: Prevalence of workplace exacerbation of asthma symptoms in an urban working population of asthmatics. J Occup Environ Med. 2006, 48: 833-839. 10.1097/01.jom.0000225169.45337.97.CrossRefPubMed Berger Z, Rom WN, Reibman J, Kim M, Zhang S, Luo L, Friedman-Jimenez G: Prevalence of workplace exacerbation of asthma symptoms in an urban working population of asthmatics. J Occup Environ Med. 2006, 48: 833-839. 10.1097/01.jom.0000225169.45337.97.CrossRefPubMed
33.
go back to reference Corvalan C, Amigo H, Bustos P, Rona RJ: Socioeconomic risk factors for asthma in Chilean young adults. Am J Public Health. 2005, 95: 1375-1381. 10.2105/AJPH.2004.048967.CrossRefPubMedPubMedCentral Corvalan C, Amigo H, Bustos P, Rona RJ: Socioeconomic risk factors for asthma in Chilean young adults. Am J Public Health. 2005, 95: 1375-1381. 10.2105/AJPH.2004.048967.CrossRefPubMedPubMedCentral
34.
go back to reference Dimich-Ward H, Taliadouros V, Teschke K, Chow Y, Abboud R, Chan-Yeung M: Quality of life and employment status of workers with Western red cedar asthma. J Occup Environ Med. 2007, 49: 1040-1045. 10.1097/JOM.0b013e31814b2e5c.CrossRefPubMed Dimich-Ward H, Taliadouros V, Teschke K, Chow Y, Abboud R, Chan-Yeung M: Quality of life and employment status of workers with Western red cedar asthma. J Occup Environ Med. 2007, 49: 1040-1045. 10.1097/JOM.0b013e31814b2e5c.CrossRefPubMed
35.
go back to reference Dixon AE, Yeh F, Welty TK, Rhoades ER, Lee ET, Howard BV, Enright PL: Asthma in American Indian adults. Chest. 2007, 131: 1323-1330. 10.1378/chest.06-1968.CrossRefPubMed Dixon AE, Yeh F, Welty TK, Rhoades ER, Lee ET, Howard BV, Enright PL: Asthma in American Indian adults. Chest. 2007, 131: 1323-1330. 10.1378/chest.06-1968.CrossRefPubMed
36.
go back to reference Hoffmann RL, Rohrer WM, South-Paul JE, Burdett R, Watzlaf VJ: The effects of barriers on Health Related Quality of Life (HRQL) and compliance in adult asthmatics who are followed in an urban community health care facility. J Community Health. 2008, 33: 374-383. 10.1007/s10900-008-9108-6.CrossRefPubMed Hoffmann RL, Rohrer WM, South-Paul JE, Burdett R, Watzlaf VJ: The effects of barriers on Health Related Quality of Life (HRQL) and compliance in adult asthmatics who are followed in an urban community health care facility. J Community Health. 2008, 33: 374-383. 10.1007/s10900-008-9108-6.CrossRefPubMed
37.
go back to reference Pleis JR, Barnes PM: A comparison of respiratory conditions between multiple race adults and their single race counterparts: an analysis based on American Indian/Alaska Native and white adults. Ethn Health. 2008, 13: 399-415. 10.1080/13557850801994839.CrossRefPubMed Pleis JR, Barnes PM: A comparison of respiratory conditions between multiple race adults and their single race counterparts: an analysis based on American Indian/Alaska Native and white adults. Ethn Health. 2008, 13: 399-415. 10.1080/13557850801994839.CrossRefPubMed
38.
go back to reference Smith JR, Mildenhall S, Noble M, Mugford M, Shepstone L, Harrison BD: Clinician-assessed poor compliance identifies adults with severe asthma who are at risk of adverse outcomes. J Asthma. 2005, 42: 437-445.CrossRefPubMed Smith JR, Mildenhall S, Noble M, Mugford M, Shepstone L, Harrison BD: Clinician-assessed poor compliance identifies adults with severe asthma who are at risk of adverse outcomes. J Asthma. 2005, 42: 437-445.CrossRefPubMed
39.
go back to reference Tonorezos ES, Karpati AM, Wang Y, Barr RG: Does the relationship between asthma and obesity differ by neighborhood?. Respir Med. 2008, 102: 1797-1804. 10.1016/j.rmed.2008.06.018.CrossRefPubMedPubMedCentral Tonorezos ES, Karpati AM, Wang Y, Barr RG: Does the relationship between asthma and obesity differ by neighborhood?. Respir Med. 2008, 102: 1797-1804. 10.1016/j.rmed.2008.06.018.CrossRefPubMedPubMedCentral
40.
go back to reference Wilson D, Takahashi K, Pan G, Chan C, Zhang S, Feng Y, Hoshuyama T, Chuang K, Lin R, Hwang J: Respiratory symptoms among residents of a heavy-industry province in China: prevalence and risk factors. Respir Med. 2008, 102: 1536-1544. 10.1016/j.rmed.2008.06.010.CrossRefPubMed Wilson D, Takahashi K, Pan G, Chan C, Zhang S, Feng Y, Hoshuyama T, Chuang K, Lin R, Hwang J: Respiratory symptoms among residents of a heavy-industry province in China: prevalence and risk factors. Respir Med. 2008, 102: 1536-1544. 10.1016/j.rmed.2008.06.010.CrossRefPubMed
41.
go back to reference Iversen L, Hannaford PC, Price DB, Godden DJ: Is living in a rural area good for your respiratory health? Results from a cross-sectional study in Scotland. Chest. 2005, 128: 2059-2067. 10.1378/chest.128.4.2059.CrossRefPubMed Iversen L, Hannaford PC, Price DB, Godden DJ: Is living in a rural area good for your respiratory health? Results from a cross-sectional study in Scotland. Chest. 2005, 128: 2059-2067. 10.1378/chest.128.4.2059.CrossRefPubMed
42.
go back to reference Yen IH, Yelin EH, Katz P, Eisner MD, Blanc PD: Perceived neighbourhood problems and quality of life, physical functioning, and depressive symptoms among adults with asthma. Am J Public Health. 2006, 96: 873-879. 10.2105/AJPH.2004.059253.CrossRefPubMedPubMedCentral Yen IH, Yelin EH, Katz P, Eisner MD, Blanc PD: Perceived neighbourhood problems and quality of life, physical functioning, and depressive symptoms among adults with asthma. Am J Public Health. 2006, 96: 873-879. 10.2105/AJPH.2004.059253.CrossRefPubMedPubMedCentral
43.
go back to reference Tugwell P, de Savigny D, Hawker G, Robinson V: Applying clinical epidemiological methods to health equity: the equity effectiveness loop. BMJ. 2006, 332: 358-361. 10.1136/bmj.332.7537.358.CrossRefPubMedPubMedCentral Tugwell P, de Savigny D, Hawker G, Robinson V: Applying clinical epidemiological methods to health equity: the equity effectiveness loop. BMJ. 2006, 332: 358-361. 10.1136/bmj.332.7537.358.CrossRefPubMedPubMedCentral
44.
go back to reference Welch V, Tugwell P, Morris EB: The equity-effectiveness loop as a tool for evaluating population health interventions. Rev Salud Publica. 2008, 10: 83-96.PubMed Welch V, Tugwell P, Morris EB: The equity-effectiveness loop as a tool for evaluating population health interventions. Rev Salud Publica. 2008, 10: 83-96.PubMed
45.
go back to reference Sim F, Mackie P: Health inequalities: the Black Report after 25 years. Public Health. 2006, 120: 185-186. 10.1016/j.puhe.2006.01.005.CrossRefPubMed Sim F, Mackie P: Health inequalities: the Black Report after 25 years. Public Health. 2006, 120: 185-186. 10.1016/j.puhe.2006.01.005.CrossRefPubMed
46.
47.
49.
go back to reference Murray CJL, Gakidou EE, Frenk J: Health inequalities and social group differences: what should we measure?. Bull World Health Organ. 1999, 77: 537-543.PubMedPubMedCentral Murray CJL, Gakidou EE, Frenk J: Health inequalities and social group differences: what should we measure?. Bull World Health Organ. 1999, 77: 537-543.PubMedPubMedCentral
50.
go back to reference Edwards N, Mill J, Kothari AR: Multiple intervention research programs in community health. Can J Nurs Res. 2004, 36: 40-54.PubMed Edwards N, Mill J, Kothari AR: Multiple intervention research programs in community health. Can J Nurs Res. 2004, 36: 40-54.PubMed
Metadata
Title
A review of equity issues in quantitative studies on health inequalities: the case of asthma in adults
Authors
Heather L Greenwood
Nancy Edwards
Amandah Hoogbruin
Eulalia K Kahwa
Okeyo N Odhiambo
Jack A Buong
Publication date
01-12-2011
Publisher
BioMed Central
Published in
BMC Medical Research Methodology / Issue 1/2011
Electronic ISSN: 1471-2288
DOI
https://doi.org/10.1186/1471-2288-11-104

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