Descriptive statistics and baseline comparisons
migraine, CM
MIGRAINE
Descriptive statistics of the study sample were obtained at baseline for socio-demographic characteristics (age, sex, marital status, years of education, education level), migraine and CM duration, previous withdrawals, and working setting (context, years working, years working at current place, weekly working hours, company size). Data were tabulated by treatment group and presented as absolute numbers (percentages) for categorical variables and as medians (first and third quartile: Q1-Q3) for quantitative variables. Differences between groups were inspected by Fisher’s exact test for categorical variables, and by Mann-Whitney U test for quantitative data. Normality of data was tested by Shapiro Wilks test.