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Table 1 Description of patient characteristics collected at baseline and at follow-up visits

From: The Drinkers’ Intervention to Prevent Tuberculosis (DIPT) trial among heavy drinkers living with HIV in Uganda: study protocol of a 2×2 factorial trial

Domain Time of measurement Individual variables
Demographics Baseline Age, sex, religion, household assets [45], and literacy
Health Baseline Medical Outcomes Study-HIV scale for quality of life and overall physical and mental health functioning [46,47,48,49,50], body mass index, CD4 cell count, active hepatitis B viral infection, smoking, and duration on ART, age first alcohol use, diagnostic and statistical manual (DSM)-5 alcohol criteria [51]
Alcohol use Baseline, 3-, 6-, and 12-month visits AUDIT, AUDIT-C, drinking patterns (days of the week), drinking locations, companions, and days of the week, frequency of alcohol intoxication, type of alcohol, 30-day timeline follow-back [52], biological measure (phosphatidylethanol (PEth))
INH adherence Each refill visit Number of MEMS openings, hair collection for INH level (at 3- and 6-month visits only)
INH side effects Each refill visit AST and ALT testing
ART adherence Baseline, 3, 6, and 12 months ART adherence Single Item Rating Scale [53, 54], visual analog scale, viral suppression
Psychosocial scales Baseline Center for Epidemiologic Studies Depression Scale (16 items) [55], Stages of Change Treatment Eagerness Scale (19 items) [56]
Discount rate (high vs. low) Baseline Time preferences (a measure of present bias and temporal discounting, i.e., tendencies towards instant versus delayed gratification) [57]