The Medical Outcomes Study HIV Health Survey (MOS-HIV), a validated quality-of-life questionnaire containing 35 questions measuring 10 dimensions of health and two scores summarizing mental and physical health states was administered at baseline and at week 40. Adverse events (AEs) were recorded at screening, baseline and weeks 1, 4, 12, 26 and 40. Compliance was recorded daily by RG7422 patients in a diary, and reported at weeks 4, 12, 26 and 40, supported by counting of vials. Information on smoking habits, alcohol consumption and physical activity was obtained in interviews. Information on antiretroviral therapy, history of therapy, and former and present comorbidity

was extracted from patient files. A surrogate measure for maximal oxygen consumption (VO2max) was calculated from a dynamic maximal output cycle-ergometer test at baseline and at week 40. During the test, a load of 100 W was applied for 5 min, after which the load was increased by 35 W every 2 minutes until this website exhaustion, with recording of maximal workload, pulse and time. VO2max was calculated as 160+[11.7 × (maximal work load–35 W+35 × time at maximal work load/120)] mL/min [20]. Unadjusted statistical comparisons of baseline variables and AEs between treatment groups were performed using the χ2 test, Fisher’s exact test or

the Kruskal–Wallis test, as appropriate. Analysis of significant changes from baseline to week 40 within treatment groups was performed using the paired t-test, signed rank test, or McNemar’s test, as appropriate. A comparison of the change in the primary outcome between treatment groups was performed using the t-test, the Kruskal–Wallis test, or analysis over of variance, applying Tukey’s adjustment for multiple comparisons as appropriate. A P-value of <0.05 was considered statistically significant. sas software, version 9.1 (SAS Institute, Cary, NC, USA) was used for the statistical analyses. A total of 46 HIV-infected patients were enrolled in this study from January 2005 to October 2006 (Fig. 1). Twenty-eight patients

received rhGH and 18 patients received placebo. The clinical characteristics of the patients are presented in Table 1. Patients in the two study groups did not differ significantly in any baseline parameter. In the GH group, 24 patients completed the study and were included in the analysis, and four patients withdrew form the study: one following the visit at week 4, and three following the visit at week 12. Two patients withdrew because of practical problems with implementing the injections in daily life; the other two withdrew because of arthralgias of intensity not acceptable to the patients, even after reduction of the study drug dose. The arthralgias resolved after stopping the study treatment. In the placebo group, all 18 patients completed the study.