Table 1. Comparison between cases and control in relation to demographics (N = 202).

Demographics	N (% or mean ± SD) (n=202)
Gender
Male	99 (49.0%)
Female	103 (51.0%)
Age	33.6 ± 12.6
City of residence
Jeddah	139 (68.8%)
Makkah	38 (18.8%)
Al-Madinah	4 (2.0%)
Others	21 (10.4%)
Education level
Up to primary or middle school	12 (5.9%)
Up to high school	59 (29.2%)
University/college	106 (52.5%)
Postgraduate	14 (6.9%)
Diploma	11 (5.4%)
Marital status
Single	80 (39.6%)
Married	112 (55.4%)
Divorced	10 (5.0%)