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Erschienen in: Quality of Life Research 4/2007

01.05.2007 | Original Paper

Health-related quality of life in HIV-1-infected patients on HAART: a five-years longitudinal analysis accounting for dropout in the APROCO-COPILOTE cohort (ANRS CO-8)

verfasst von: Camelia Protopopescu, Fabienne Marcellin, Bruno Spire, Marie Préau, Renaud Verdon, Dominique Peyramond, François Raffi, Geneviève Chêne, Catherine Leport, Maria-Patrizia Carrieri

Erschienen in: Quality of Life Research | Ausgabe 4/2007

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Abstract

Background

The long-term efficacy of Highly Active Antiretroviral Therapies (HAART) has enlightened the crucial role of health-related quality of life (HRQL) among HIV-infected patients. However, any analysis of such extensive longitudinal data necessitates a suitable handling of dropout which may correlate with patients–health status.

Methods

We analysed the HRQL evolution over 5 years for 1,000 patients initiating a protease inhibitor (PI)-containing therapy, using MOS SF-36 physical (PCS) and mental (MCS) scores. In parallel with a classical separate random effects model, we used a joint parameter-dependent selection model to account for non-ignorable dropout.

Results

HRQL evolved according to a two-phase pattern, characterized by an initial improvement during the year following HAART initiation and a relative stabilization thereafter. Immunodepression and self-reported side effects were found to be negative predictors of both PCS and MCS scores. Hepatitis C virus coinfection and AIDS clinical stage were found to affect physical HRQL. Results were not significantly altered when accounting for dropout.

Conclusion

Such results, obtained on a large sample of HIV-infected patients with extensive follow-up, underline the need for a regular monitoring of patients–immunological status and for a better management of their experience with hepatitis C and HAART.
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1
Note that there is no principal effect for the “Number of self-reported symptoms of lipodystrophy–in Table 3, as lipodystrophy symptoms were absent at M0. The coefficient of the first slope is used in this case for the interpretation.
 
Literatur
1.
Zurück zum Zitat Palella, F. J., Jr., Delaney, K. M., Moorman, A. C., Loveless, M. O., Fuhrer, J., Satten, G. A., et al. (1998). Declining morbidity and mortality among patients with advanced human immunodeficiency virus infection. HIV Outpatient Study Investigators. New England Journal of Medicine, 338, 853–60.CrossRefPubMed Palella, F. J., Jr., Delaney, K. M., Moorman, A. C., Loveless, M. O., Fuhrer, J., Satten, G. A., et al. (1998). Declining morbidity and mortality among patients with advanced human immunodeficiency virus infection. HIV Outpatient Study Investigators. New England Journal of Medicine, 338, 853–60.CrossRefPubMed
2.
Zurück zum Zitat Little, R., & Rubin, D. (2002). Statistical analysis with missing data. Little, R., & Rubin, D. (2002). Statistical analysis with missing data.
3.
Zurück zum Zitat Laird, N. M. (1988). Missing data in longitudinal studies. Statistics in Medicine, 7, 305–15.CrossRefPubMed Laird, N. M. (1988). Missing data in longitudinal studies. Statistics in Medicine, 7, 305–15.CrossRefPubMed
4.
Zurück zum Zitat Vonesh, E. F., Greene, T., & Schluchter, M. D. (2006). Shared parameter models for the joint analysis of longitudinal data and event times. Statistics in Medicine, 15, 143–63.CrossRef Vonesh, E. F., Greene, T., & Schluchter, M. D. (2006). Shared parameter models for the joint analysis of longitudinal data and event times. Statistics in Medicine, 15, 143–63.CrossRef
5.
Zurück zum Zitat Hogan, J. W., Lin, X., & Herman, B. (2004). Mixtures of varying coefficient models for longitudinal data with discrete or continuous nonignorable dropout. Biometrics, 60, 854–64.CrossRefPubMed Hogan, J. W., Lin, X., & Herman, B. (2004). Mixtures of varying coefficient models for longitudinal data with discrete or continuous nonignorable dropout. Biometrics, 60, 854–64.CrossRefPubMed
6.
Zurück zum Zitat Lin, D. Y., & Ying, Z. (2003). Semiparametric regression analysis of longitudinal data with informative drop-outs. Biostatistics, 4, 385–98.CrossRefPubMed Lin, D. Y., & Ying, Z. (2003). Semiparametric regression analysis of longitudinal data with informative drop-outs. Biostatistics, 4, 385–98.CrossRefPubMed
7.
Zurück zum Zitat Hu, C., & Sale, M. E. (2003). A joint model for nonlinear longitudinal data with informative dropout. Journal of Pharmacokinetics and Pharmacodynamics, 30, 83–03.CrossRefPubMed Hu, C., & Sale, M. E. (2003). A joint model for nonlinear longitudinal data with informative dropout. Journal of Pharmacokinetics and Pharmacodynamics, 30, 83–03.CrossRefPubMed
8.
Zurück zum Zitat Guo, X., & Carlin, B. P. (2004). Separate and joint modeling of longitudinal and event time data using standard computer packages. The American Statistician, 58, 1–.CrossRef Guo, X., & Carlin, B. P. (2004). Separate and joint modeling of longitudinal and event time data using standard computer packages. The American Statistician, 58, 1–.CrossRef
9.
Zurück zum Zitat Carrieri, P., Spire, B., Duran, S., Katlama, C., Peyramond, D., Francois, C., et al. (2003). Health-related quality of life after 1 year of highly active antiretroviral therapy. Journal of Acquired Immune Deficiency Syndromes, 32, 38–7.PubMed Carrieri, P., Spire, B., Duran, S., Katlama, C., Peyramond, D., Francois, C., et al. (2003). Health-related quality of life after 1 year of highly active antiretroviral therapy. Journal of Acquired Immune Deficiency Syndromes, 32, 38–7.PubMed
10.
Zurück zum Zitat Carrieri, M. P., Leport, C., Protopopescu, C., Cassuto, J. P., Bouvet, E., Peyramond, D., et al. (2006), Factors associated with nonadherence to highly active antiretroviral therapy: A 5-year follow-up analysis with correction for the bias induced by missing data in the treatment maintenance phase. Journal of Acquired Immune Deficiency Syndromes, 41, 477–85.CrossRefPubMed Carrieri, M. P., Leport, C., Protopopescu, C., Cassuto, J. P., Bouvet, E., Peyramond, D., et al. (2006), Factors associated with nonadherence to highly active antiretroviral therapy: A 5-year follow-up analysis with correction for the bias induced by missing data in the treatment maintenance phase. Journal of Acquired Immune Deficiency Syndromes, 41, 477–85.CrossRefPubMed
11.
Zurück zum Zitat Ware, J. E., Jr., & Sherbourne, C. D. (1992). The MOS 36-item short-form health survey (SF-36). I. Conceptual framework and item selection. Medical Care, 30, 473–83.CrossRefPubMed Ware, J. E., Jr., & Sherbourne, C. D. (1992). The MOS 36-item short-form health survey (SF-36). I. Conceptual framework and item selection. Medical Care, 30, 473–83.CrossRefPubMed
12.
Zurück zum Zitat McHorney, C. A., Ware, J. E., Jr., & Raczek, A. E. (1993). The MOS 36-Item Short-Form Health Survey (SF-36): II. Psychometric and clinical tests of validity in measuring physical and mental health constructs. Medical Care, 31, 247–63.CrossRefPubMed McHorney, C. A., Ware, J. E., Jr., & Raczek, A. E. (1993). The MOS 36-Item Short-Form Health Survey (SF-36): II. Psychometric and clinical tests of validity in measuring physical and mental health constructs. Medical Care, 31, 247–63.CrossRefPubMed
13.
Zurück zum Zitat McHorney, C. A., Ware, J. E., Jr., Lu, J. F., & Sherbourne, C. D. (1994). The MOS 36-item Short-Form Health Survey (SF-36): III Tests of data quality, scaling assumptions, and reliability across diverse patient groups. Medical Care, 32, 40–6.CrossRefPubMed McHorney, C. A., Ware, J. E., Jr., Lu, J. F., & Sherbourne, C. D. (1994). The MOS 36-item Short-Form Health Survey (SF-36): III Tests of data quality, scaling assumptions, and reliability across diverse patient groups. Medical Care, 32, 40–6.CrossRefPubMed
14.
Zurück zum Zitat Ware, J. E., Jr., Keller, S. D., Gandek, B., Brazier, J. E., & Sullivan, M. (1995). Evaluating translations of health status questionnaires. Methods from the IQOLA project. International Quality of Life Assessment. International Journal of Technology Assessment in Health Care, 11, 525–51.CrossRefPubMed Ware, J. E., Jr., Keller, S. D., Gandek, B., Brazier, J. E., & Sullivan, M. (1995). Evaluating translations of health status questionnaires. Methods from the IQOLA project. International Quality of Life Assessment. International Journal of Technology Assessment in Health Care, 11, 525–51.CrossRefPubMed
15.
Zurück zum Zitat Leplege, A., Mesbah, M., & Marquis, P. (1995). [Preliminary analysis of the psychometric properties of the French version of an international questionnaire measuring the quality of life: The MOS SF-36 (version 1.1)]. Revue d Epidemiologie et de Sante Publique, 43, 371–79.PubMed Leplege, A., Mesbah, M., & Marquis, P. (1995). [Preliminary analysis of the psychometric properties of the French version of an international questionnaire measuring the quality of life: The MOS SF-36 (version 1.1)]. Revue d Epidemiologie et de Sante Publique, 43, 371–79.PubMed
16.
Zurück zum Zitat Prentice, R. L., & Gloeckler, L. A. (1978). Regression analysis of grouped survival data with application to breast cancer data. Biometrics, 34, 57–7.CrossRefPubMed Prentice, R. L., & Gloeckler, L. A. (1978). Regression analysis of grouped survival data with application to breast cancer data. Biometrics, 34, 57–7.CrossRefPubMed
17.
Zurück zum Zitat Henderson, R., Diggle, P., & Dobson, A. (2000). Joint modelling of longitudinal measurements and event time data. Biostatistics, 1, 465–80.CrossRefPubMed Henderson, R., Diggle, P., & Dobson, A. (2000). Joint modelling of longitudinal measurements and event time data. Biostatistics, 1, 465–80.CrossRefPubMed
18.
Zurück zum Zitat SAS/STAT 9.1 (2004). User’s Guide. Cary, NC, SAS Institute Inc: SAS Publishing. SAS/STAT 9.1 (2004). User’s Guide. Cary, NC, SAS Institute Inc: SAS Publishing.
19.
Zurück zum Zitat Furher, R., & Rouillon, F. (1989). La version française de l’échelle CES-D. Description and translation of the auto-evaluation (in French). Psychiatrie et Psychobiologie, 4, 163–66. Furher, R., & Rouillon, F. (1989). La version française de l’échelle CES-D. Description and translation of the auto-evaluation (in French). Psychiatrie et Psychobiologie, 4, 163–66.
20.
Zurück zum Zitat Bissell, D., Paton, A., & Ritson, B. (1982). ABC of alcohol. Help: Referral. British Medical Journal (Clinical Research Ed), 284, 495–97.CrossRef Bissell, D., Paton, A., & Ritson, B. (1982). ABC of alcohol. Help: Referral. British Medical Journal (Clinical Research Ed), 284, 495–97.CrossRef
21.
Zurück zum Zitat Nieuwkerk, P. T., Gisolf, E. H., Colebunders, R., Wu, A. W., Danner, S. A., & Sprangers, M. A. (2000). Quality of life in asymptomatic- and symptomatic HIV infected patients in a trial of ritonavir/saquinavir therapy. The Prometheus Study Group. Acquired Immune Deficiency Syndromes, 14, 181–87. Nieuwkerk, P. T., Gisolf, E. H., Colebunders, R., Wu, A. W., Danner, S. A., & Sprangers, M. A. (2000). Quality of life in asymptomatic- and symptomatic HIV infected patients in a trial of ritonavir/saquinavir therapy. The Prometheus Study Group. Acquired Immune Deficiency Syndromes, 14, 181–87.
22.
Zurück zum Zitat Cohen, C., Revicki, D. A., Nabulsi, A., Sarocco, P. W., & Jiang, P. (1998). A randomized trial of the effect of ritonavir in maintaining quality of life in advanced HIV disease. Advanced HIV Disease Ritonavir Study Group. Acquired Immune Deficiency Syndromes, 12, 1495–502. Cohen, C., Revicki, D. A., Nabulsi, A., Sarocco, P. W., & Jiang, P. (1998). A randomized trial of the effect of ritonavir in maintaining quality of life in advanced HIV disease. Advanced HIV Disease Ritonavir Study Group. Acquired Immune Deficiency Syndromes, 12, 1495–502.
23.
Zurück zum Zitat Carr, A., Chuah, J., Hudson, J., French, M., Hoy, J., Law, M., et al. (2000). A randomised, open-label comparison of three highly active antiretroviral therapy regimens including two nucleoside analogues and indinavir for previously untreated HIV-1 infection: The OzCombo1 study. Acquired Immune Deficiency Syndromes, 14, 1171–180. Carr, A., Chuah, J., Hudson, J., French, M., Hoy, J., Law, M., et al. (2000). A randomised, open-label comparison of three highly active antiretroviral therapy regimens including two nucleoside analogues and indinavir for previously untreated HIV-1 infection: The OzCombo1 study. Acquired Immune Deficiency Syndromes, 14, 1171–180.
24.
Zurück zum Zitat Nieuwkerk, P. T., Gisolf, E. H., Reijers, M. H., Lange, J. M., Danner, S. A., & Sprangers, M. A. (2001). Long-term quality of life outcomes in three antiretroviral treatment strategies for HIV-1 infection. Acquired Immune Deficiency Syndromes, 15, 1985–991. Nieuwkerk, P. T., Gisolf, E. H., Reijers, M. H., Lange, J. M., Danner, S. A., & Sprangers, M. A. (2001). Long-term quality of life outcomes in three antiretroviral treatment strategies for HIV-1 infection. Acquired Immune Deficiency Syndromes, 15, 1985–991.
25.
Zurück zum Zitat Burgoyne, R. W., Rourke, S. B., Behrens, D. M., & Salit, I. E. (2004). Long-term quality-of-life outcomes among adults living with HIV in the HAART era: The interplay of changes in clinical factors and symptom profile. Acquired Immune Deficiency Syndromes Behavior, 8, 151–63. Burgoyne, R. W., Rourke, S. B., Behrens, D. M., & Salit, I. E. (2004). Long-term quality-of-life outcomes among adults living with HIV in the HAART era: The interplay of changes in clinical factors and symptom profile. Acquired Immune Deficiency Syndromes Behavior, 8, 151–63.
26.
Zurück zum Zitat Burgoyne, R., & Renwick, R. (2004). Social support and quality of life over time among adults living with HIV in the HAART era. Social Science and Medicine, 58, 1353–366.CrossRefPubMed Burgoyne, R., & Renwick, R. (2004). Social support and quality of life over time among adults living with HIV in the HAART era. Social Science and Medicine, 58, 1353–366.CrossRefPubMed
27.
Zurück zum Zitat Eriksson, L. E., Bratt, G. A., Sandstrom, E., & Nordstrom, G. (2005). The two-year impact of first generation protease inhibitor based antiretroviral therapy (PI-ART) on health-related quality of life. Health Quality of Life Outcomes, 3, 32.CrossRef Eriksson, L. E., Bratt, G. A., Sandstrom, E., & Nordstrom, G. (2005). The two-year impact of first generation protease inhibitor based antiretroviral therapy (PI-ART) on health-related quality of life. Health Quality of Life Outcomes, 3, 32.CrossRef
28.
Zurück zum Zitat Campsmith, M. L., Nakashima, A. K., & Davidson, A. J. (2003). Self-reported health-related quality of life in persons with HIV infection: Results from a multi-site interview project. Health Quality of Life Outcomes, 1, 12.CrossRef Campsmith, M. L., Nakashima, A. K., & Davidson, A. J. (2003). Self-reported health-related quality of life in persons with HIV infection: Results from a multi-site interview project. Health Quality of Life Outcomes, 1, 12.CrossRef
29.
Zurück zum Zitat Jia, H., Uphold, C. R., Wu, S., Chen, G. J., & Duncan, P. W. (2005). Predictors of changes in health-related quality of life among men with HIV infection in the HAART era. Acquired Immune Deficiency Syndromes Patient Care STDS Patient Care STDS, 19, 395–05. Jia, H., Uphold, C. R., Wu, S., Chen, G. J., & Duncan, P. W. (2005). Predictors of changes in health-related quality of life among men with HIV infection in the HAART era. Acquired Immune Deficiency Syndromes Patient Care STDS Patient Care STDS, 19, 395–05.
30.
Zurück zum Zitat Hogg, R. S., Yip, B., Chan, K. J., Wood, E., Craib, K. J., O’shaughnessy, M. V., & Montaner, J. S. (2001). Rates of disease progression by baseline CD4 cell count and viral load after initiating triple-drug therapy. JAMA, 286, 2568–577.CrossRefPubMed Hogg, R. S., Yip, B., Chan, K. J., Wood, E., Craib, K. J., O’shaughnessy, M. V., & Montaner, J. S. (2001). Rates of disease progression by baseline CD4 cell count and viral load after initiating triple-drug therapy. JAMA, 286, 2568–577.CrossRefPubMed
31.
Zurück zum Zitat Bonfanti, P., Valsecchi, L., Parazzini, F., Carradori, S., Pusterla, L., Fortuna, P., et al. (2000). Incidence of adverse reactions in HIV patients treated with protease inhibitors: a cohort study Coordinamento Italiano Studio Allergia e Infezione da HIV (CISAI) Group. Journal of Acquired Immune Deficiency Syndromes, 23, 236–45.PubMed Bonfanti, P., Valsecchi, L., Parazzini, F., Carradori, S., Pusterla, L., Fortuna, P., et al. (2000). Incidence of adverse reactions in HIV patients treated with protease inhibitors: a cohort study Coordinamento Italiano Studio Allergia e Infezione da HIV (CISAI) Group. Journal of Acquired Immune Deficiency Syndromes, 23, 236–45.PubMed
32.
Zurück zum Zitat Fellay, J., Boubaker, K., Ledergerber, B., Bernasconi, E., Furrer, H., Battegay, M., et al. (2001). Prevalence of adverse events associated with potent antiretroviral treatment: Swiss HIV Cohort Study. Lancet, 358, 1322–327.CrossRefPubMed Fellay, J., Boubaker, K., Ledergerber, B., Bernasconi, E., Furrer, H., Battegay, M., et al. (2001). Prevalence of adverse events associated with potent antiretroviral treatment: Swiss HIV Cohort Study. Lancet, 358, 1322–327.CrossRefPubMed
33.
Zurück zum Zitat Ammassari, A., Murri, R., Pezzotti, P., Trotta, M. P., Ravasio, L., De Longis, P., et al. (2001). Self-reported symptoms and medication side effects influence adherence to highly active antiretroviral therapy in persons with HIV infection. Journal of Acquired Immune Deficiency Syndromes, 28, 445–49.PubMed Ammassari, A., Murri, R., Pezzotti, P., Trotta, M. P., Ravasio, L., De Longis, P., et al. (2001). Self-reported symptoms and medication side effects influence adherence to highly active antiretroviral therapy in persons with HIV infection. Journal of Acquired Immune Deficiency Syndromes, 28, 445–49.PubMed
34.
Zurück zum Zitat Duran, S., Spire, B., Raffi, F., Walter, V., Bouhour, D., Journot, V., et al. (2001). Self-reported symptoms after initiation of a protease inhibitor in HIV-infected patients and their impact on adherence to HAART. HIV Clinical Trials, 2, 38–5.CrossRefPubMed Duran, S., Spire, B., Raffi, F., Walter, V., Bouhour, D., Journot, V., et al. (2001). Self-reported symptoms after initiation of a protease inhibitor in HIV-infected patients and their impact on adherence to HAART. HIV Clinical Trials, 2, 38–5.CrossRefPubMed
35.
Zurück zum Zitat Bury, M. (1991). The sociology of chronic illness: A review of research and prospects. Sociology of Health and Illness, 13, 451–68.CrossRef Bury, M. (1991). The sociology of chronic illness: A review of research and prospects. Sociology of Health and Illness, 13, 451–68.CrossRef
36.
Zurück zum Zitat Foster, G. R., Goldin, R. D., & Thomas, H. C. (1998). Chronic hepatitis C virus infection causes a significant reduction in quality of life in the absence of cirrhosis. Hepatology, 27, 209–12.CrossRefPubMed Foster, G. R., Goldin, R. D., & Thomas, H. C. (1998). Chronic hepatitis C virus infection causes a significant reduction in quality of life in the absence of cirrhosis. Hepatology, 27, 209–12.CrossRefPubMed
37.
Zurück zum Zitat Rodger, A. J., Jolley, D., Thompson, S. C., Lanigan, A., & Crofts, N. (1999). The impact of diagnosis of hepatitis C virus on quality of life. Hepatology, 30, 1299–301.CrossRefPubMed Rodger, A. J., Jolley, D., Thompson, S. C., Lanigan, A., & Crofts, N. (1999). The impact of diagnosis of hepatitis C virus on quality of life. Hepatology, 30, 1299–301.CrossRefPubMed
38.
Zurück zum Zitat Preau, M., Leport, C., Salmon-Ceron, D., Carrieri, P., Portier, H., Chene, G., et al. (2004). Health-related quality of life and patient–provider relationships in HIV-infected patients during the first three years after starting PI-containing antiretroviral treatment. Acquired Immune Deficiency Syndromes Care, 16, 649–61. Preau, M., Leport, C., Salmon-Ceron, D., Carrieri, P., Portier, H., Chene, G., et al. (2004). Health-related quality of life and patient–provider relationships in HIV-infected patients during the first three years after starting PI-containing antiretroviral treatment. Acquired Immune Deficiency Syndromes Care, 16, 649–61.
39.
Zurück zum Zitat Cederfjall, C., Langius-Eklof, A., Lidman, K., & Wredling, R. (2001). Gender differences in perceived health-related quality of life among patients with HIV infection. Acquired Immune Deficiency Syndromes Patient Care STDS, 15, 31–9. Cederfjall, C., Langius-Eklof, A., Lidman, K., & Wredling, R. (2001). Gender differences in perceived health-related quality of life among patients with HIV infection. Acquired Immune Deficiency Syndromes Patient Care STDS, 15, 31–9.
40.
Zurück zum Zitat Mrus, J. M., Williams, P. L., Tsevat, J., Cohn, S. E., & Wu, A. W. (2005). Gender differences in health-related quality of life in patients with HIV/AIDS. Quality of Life Research, 14, 479–91.CrossRefPubMed Mrus, J. M., Williams, P. L., Tsevat, J., Cohn, S. E., & Wu, A. W. (2005). Gender differences in health-related quality of life in patients with HIV/AIDS. Quality of Life Research, 14, 479–91.CrossRefPubMed
41.
Zurück zum Zitat Nicholas, P. K., Kirksey, K. M., Corless, I. B., & Kemppainen, J. (2005). Lipodystrophy and quality of life in HIV: Symptom management issues. Applied Nursing Research, 18, 55–8.CrossRefPubMed Nicholas, P. K., Kirksey, K. M., Corless, I. B., & Kemppainen, J. (2005). Lipodystrophy and quality of life in HIV: Symptom management issues. Applied Nursing Research, 18, 55–8.CrossRefPubMed
42.
Zurück zum Zitat Collins, E., Wagner, C., & Walmsley, S. (2000). Psychosocial impact of the lipodystrophy syndrome in HIV infection. Acquired Immune Deficiency Syndromes Read, 10, 546–50. Collins, E., Wagner, C., & Walmsley, S. (2000). Psychosocial impact of the lipodystrophy syndrome in HIV infection. Acquired Immune Deficiency Syndromes Read, 10, 546–50.
43.
Zurück zum Zitat Préau, M., Bouhnik, A., Spire, B., Leport, C., Saves, M., Pïcard, O., et al. (2006). Health related quality of life and lipodystrophy syndrome among HIV-infected patients. Encephale, 32, 713–19.CrossRefPubMed Préau, M., Bouhnik, A., Spire, B., Leport, C., Saves, M., Pïcard, O., et al. (2006). Health related quality of life and lipodystrophy syndrome among HIV-infected patients. Encephale, 32, 713–19.CrossRefPubMed
44.
Zurück zum Zitat Hsiung, P. C., Fang, C. T., Chang, Y. Y., Chen, M. Y., Wang, J. D. (2005). Comparison of WHOQOLbREF and SF-36 in patients with HIV infection. Quality of Life Research, 14, 141–50.CrossRefPubMed Hsiung, P. C., Fang, C. T., Chang, Y. Y., Chen, M. Y., Wang, J. D. (2005). Comparison of WHOQOLbREF and SF-36 in patients with HIV infection. Quality of Life Research, 14, 141–50.CrossRefPubMed
45.
Zurück zum Zitat Monnete, G., Shao, Q., & Kwan, E. (2002). A first look at multilevel models. In S.C.S. Institute for Social Research. York University: Institute for Social Research. Statistical Consulting Service, York University. Monnete, G., Shao, Q., & Kwan, E. (2002). A first look at multilevel models. In S.C.S. Institute for Social Research. York University: Institute for Social Research. Statistical Consulting Service, York University.
46.
Zurück zum Zitat Allison, P. D. (1995). Survival analysis using the SAS system: A practical guide. The SAS Institute, Cary, NC. Allison, P. D. (1995). Survival analysis using the SAS system: A practical guide. The SAS Institute, Cary, NC.
47.
Zurück zum Zitat Allison, P. D. (1982). Discrete-time methods for the analysis of event histories. Sociological Methodology, 15, 61–8.CrossRef Allison, P. D. (1982). Discrete-time methods for the analysis of event histories. Sociological Methodology, 15, 61–8.CrossRef
48.
Zurück zum Zitat Jenkins, S. P. (1995). Easy estimation methods for discrete-time duration models. Oxford Bulletin of Economics and Statistics, 57, 129–38. Jenkins, S. P. (1995). Easy estimation methods for discrete-time duration models. Oxford Bulletin of Economics and Statistics, 57, 129–38.
49.
Zurück zum Zitat Jenkins, S. P. (1997). Estimation of discrete time (grouped duration data) proportional hazards models: pgmhaz. Stata Technical Bulletin Reprints, STB 17, 1–2. Jenkins, S. P. (1997). Estimation of discrete time (grouped duration data) proportional hazards models: pgmhaz. Stata Technical Bulletin Reprints, STB 17, 1–2.
50.
Zurück zum Zitat Jenkins, S. P. (2005). Survival analysis. In Institute for Social and Economic Research, University of Essex. Jenkins, S. P. (2005). Survival analysis. In Institute for Social and Economic Research, University of Essex.
51.
Zurück zum Zitat Zewotir, T., & Galpin, J. S. (2005). Influence diagnostics for linear mixed models. Journal of Data Science, 3, 153–77. Zewotir, T., & Galpin, J. S. (2005). Influence diagnostics for linear mixed models. Journal of Data Science, 3, 153–77.
Metadaten
Titel
Health-related quality of life in HIV-1-infected patients on HAART: a five-years longitudinal analysis accounting for dropout in the APROCO-COPILOTE cohort (ANRS CO-8)
verfasst von
Camelia Protopopescu
Fabienne Marcellin
Bruno Spire
Marie Préau
Renaud Verdon
Dominique Peyramond
François Raffi
Geneviève Chêne
Catherine Leport
Maria-Patrizia Carrieri
Publikationsdatum
01.05.2007
Verlag
Springer Netherlands
Erschienen in
Quality of Life Research / Ausgabe 4/2007
Print ISSN: 0962-9343
Elektronische ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-006-9151-7

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