Quality of Life of HIV-infected Participants Switched to Raltegravir Versus Other Antiretroviral Regimens (MK-0518-266)

Raltegravir + 2 NRTIs

Raltegravir is an integrase inhibitor. Two Nucleoside Reverse Transcriptase Inhibitor (NRTIs)

NNRTI + 2 NRTIs

Non-nucleoside Reverse Transcriptase Inhibitor (NNRTI) could include: delavirdine, efavirenz, etravirine, rilpivirine, nevirapine; and two NRTIs.

PI + 2 NRTIs

Protease inhibitors (PI) could include: nelfinavir, lopinavir, saquinavir, tipranavir, atazanavir and darunavir; and two NRTIs.

Medical Outcomes Study-HIV (MOS-HIV) Health Survey Scores

The MOS-HIV scale is a 35-item measure of health related quality of life (QOL) questionnaire which assesses 10 dimensions of health (general health perceptions, pain, physical functioning, role functioning, social functioning, mental health, energy/fatifue, cognitive function, health distress and QOL), as well as a single item to assess health transition. In addition to these subscales, a Physical Health Summary score (PHS) and a Mental Health Summary score (MHS) is calculated using a method where the summary scores are transformed to a standardized scale with a norm of 50 and a standard deviation of 10 in the sample in which the summary scores were developed. The subscales of the MOS-HIV are scored as summed rating scales ranging from a minimum of 0, to a maximum of 100, where higher scores indicate better health.

Change From Baseline in Depression, Anxiety, and Stress Scale (DASS-21)

DASS-21 is comprised of questionnaires for three separate scales measuring Depression, Anxiety and Stress. The depression scale is scored by summing the responses of each question, multiplying by 2 and then scoring on a scale ranging from a minimum of 0 to a maximum of 28+, with higher scores indicating greater severity. The anxiety scale is scored by summing the responses of each question, multiplying by 2 and then scoring on a scale ranging from a minimum of 0 to a maximum of 20+, with higher scores indicating greater severity. The stress scale is scored by summing the responses of each question, multiplying by 2 and then scoring on a scale ranging from a minimum of 0 to a maximum of 37+, with higher scores indicating greater severity.

Change From Baseline in HIV Symptom Index (HIV-SI)

HIV-SI measures the frequency and level of bothersome HIV and HIV treatment-related symptoms, including nervous symptoms (dizziness, somnolence, trouble remembering), gastrointestinal symptoms (nausea, gas/bloating, diarrhea) and pain (hand/foot, muscle/joint). The 20-item questionnaire asks whether respondents experienced any one of these symptoms within the past 4 weeks, and if they did, what the relative level of bother for each symptom was, based on a 5-point Likert scale. The maximum sum of scores is 80; the minimum is 0; with a higher score indicating greater symptom distress.

Change From Baseline in Dermatology Life Quality Index (DLQI)

DLQI is a 10-question dermatology-specific QOL questionnaire, which is calculated by summing the score of each question, resulting in a maximum of 30, and a minimum of 0. Higher scores mean the QOL is more impaired.