Multiple health risk behaviours and posttraumatic stress disorder symptoms among university students from 22 countries

The goal of the study was to investigate multiple health risk behaviours in relation to PTSD symptoms in a sample of university students from 22 countries. Using anonymous questionnaires, data were collected from 16804 undergraduate university students (mean age 20.8, SD = 2.8) from 23 universities in 22 countries in Africa, Asia, Caribbean and South America. Results indicate that overall, 20.9% of the university students screened positive for PTSD, and the overall mean of health risk behaviours (range from 1-10) was 2.7 for university students from all countries. Logistic regression adjusted for sociodemographic characteristics and social support found that each of the ten individual health risk behaviours was significantly associated with PTSD symptoms. In addition, logistic regression with multiple health risk behaviours found a steady increase from 1 (Odds Ratio (OR): 1.37, CI 1.05-1.77) to 5 or more (OR: 3.57, CI 2.75-4.64) health risk behaviours in association with PTSD symptoms, adjusted for age, gender, economic family background and social support.