No statistically significant variation was seen with respect to gender, educational attainment, or income level.
Demographic variables used in the statistical analyses were environment, gender, educational level, and age group.
Otherwise, cases included and those excluded from the study were similar in regard to gender, educational level and marital status.
However, there were no significant differences with respect to gender, educational level, and duration of disease (data not shown).
The distribution of the subjects was relatively homogenous with respect to environment, gender, educational level, and age (Table 1).
Patient characteristics: age, gender, educational level.
Demographic items included age, gender, educational level, major, and marital status.
The questionnaire encompassed five main domains: Patient characteristics: age, gender, educational level.
These include age, gender educational attainment and permanency of the job.
These two groups were matched for age, gender, educational level, marital status and number of previous MDEs.
The independent variables included migraine, a current MDE, and five demographic variables (age, gender, educational level, marital status, and employment).
