2.3. Data analysis
Data was analyzed using the Statistical Package for the Social Sciences (SPSS) 17.0 program. The percentages of major depression and generalized anxiety disorder were recorded. Descriptive statistics were conducted to present the characteristics of the study sample. The comparisons of those with depression/anxiety versus those without were performed by the Fisher's exact test for qualitative data, Student t-test for quantitative data. All tests were two sided and significance level was set at 0.05.