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Table 3 Overview of variables recorded by questionnaires

From: Copenhagen comorbidity in HIV infection (COCOMO) study: a study protocol for a longitudinal, non-interventional assessment of non-AIDS comorbidity in HIV infection in Denmark

Variable Examples
External risk factors
 Smoking Current, previous, and passive smoking, cumulative pack-years, type, filters, e-cigarettes
 Alcohol/drug abuse Current and previous alcohol intake, intravenous drug use, cannabis, methadone treatment
 Biomass fuel/environmental exposure Occupational dusts, organic, inorganic gasses, vapors, and fumes (outdoor and indoor)
 Demographics Ethnicity, nationality, marital status, children
 Education/income Level of education, house-hold income
 Work Employment, income, night work
 Diet Meat intake, vegetable intake
 Daily living Physical activity, social support, sleeping, stress, sun exposure
 Medication use Prescription and doses
Internal risk factors
 Gender and ethnicity Ethnicity, place of birth
 Perinatal/childhood events Birthweight, delivery at term, breast feeding, respiratory tract infections
 Family history of disease AMI, apoplexy, asthma, COPD, hypertension, diabetes, cancer, depression
 Questions for females Pregnancies, menarche- and menopause age, abortions
Self-reported disease Asthma, COPD, allergy, diabetes
Symptoms Angina, dyspnea (MRC), cough, wheeze, sputum, reflux
  1. Risk factors for non-AIDS comorbidity, self-reported disease, and subjective morbidity are assessed. Under each variable a non-exhaustive list of examples are given
  2. Abbreviations: AMI acute myocardial infarction, COPD chronic obstructive pulmonary disease and MRC medical research council dyspnea scale