Table 1 Baseline characteristics of MS patients and their healthy controls
From: Environmental exposures and the risk of multiple sclerosis in Saudi Arabia
Baseline characteristics | MS patients (n = 307) | Controls (n = 307) | P value |
|---|---|---|---|
n (%) | n (%) | ||
Female | 230 (75) | 230 (75) | 1 |
Male | 77 (25) | 77 (25) | |
Age, mean (SD) | 32.91 (±8.82) | 32.89 (±8.64) | |
18–29 | 128 (41.7) | 128 (42) | 0.94 |
30–39 | 106 (35) | 111 (36) | |
40–49 | 56 (18) | 50 (16) | |
50–59 | 16 (5) | 16 (5) | |
60–69 | 1 (0.3) | 2 (1) | |
Level of education | |||
Less than university | 142 (46) | 158 (52) | 0.30 |
University | 149 (49) | 130 (42) | |
Postgraduate | 16 (5) | 19 (6) | |
Main work status over the last 12 months | |||
Employed | 158 (52) | 186 (61) | 0.127 |
Unemployed | 23 (8) | 15 (5) | |
Student | 37 (12) | 32 (10) | |
Housewife | 89 (29) | 74 (24) | |
Average earnings of the householda | |||
< 7500 | 87 (33) | 87 (31) | 0.19 |
7500–12,499 | 101 (38) | 114 (40) | |
≥ 12,500 | 80 (30) | 83 (29) | |