Table 1 Data to be extracted from eligible studies

Publication details

Year of publication, language of publication, country in which study conducted

Design

Type of study, study temporality, population-based, type of center where study was conducted, duration of study, follow-up time

Study participants

Age, sex, number of persons with HIV, number of control subjects, description of persons with HIV (years diagnosed with HIV, HIV acquisition risk factors, CD4+ cell count and viral load at time of colorectal cancer diagnosis, percentage receiving antiretroviral therapy), description of control population (healthy individuals, general population, other underlying medical condition), attrition and reason(s) for loss to follow-up, comorbid illness

Outcome measures

Standardized incidence ratio of colorectal cancer, numbers of observed and expected cases, stage of diagnosis, site of cancer, screening/diagnostic modality (fecal occult blood test, colonoscopy, sigmoidoscopy, other), number of deaths (total and cancer related), standardized mortality ratio, treatment received, treatment outcomes