Table 1 Baseline demographic characteristics and family history of the study population
Characteristic |  | Patients (n = 129) | Controls (n = 129) | z /χ2 (p) |
|---|---|---|---|---|
Age (years)a | Â | 43.0 (33.0, 50.0) | 43.00 (33.0, 50.0) | Â |
Years of educationa | Â | 9.00 (9.00, 12.0) | 11.00 (9.00,12.0) | 0.13 (0.90) |
Nature of work, n (%) | physical | 77 (29.84) | 75 (29.07) | Â |
non-physical | 52 (20.16) | 54 (20.93) | 0.13 (0.90) | |
History of smoking, n (%) | Yes | 81 (31.40) | 44 (17.05) | Â |
No | 48 (18.60) | 85 (32.95) | 21.25 (< 0.01) | |
Marital status, n (%) | Single | 3 (1.16) | 8 (3.10) | 1.23 (0.22) |
Married | 107 (41.47) | 106 (41.09) | 0.00 (1.00) | |
Divorced | 17 (6.59) | 14 (5.43) | 0.38 (0.70) | |
Widow | 2 (0.78) | 1 (0.39) | 0.00 (1.00) | |
Family history of | Yes | 8 (3.10) | 5 (1.94) | Â |
psychosis, n (%) | No | 121 (46.90) | 124 (48.06) | 0.32 (0.57) |
Family history of | Yes | 11 (4.26) | 4 (1.55) | Â |
alcohol addiction, n (%) | No | 118 (45.74) | 125 (48.45) | 2.55 (0.11) |