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Table 1 Baseline demographic characteristics and family history of the study population

From: Family alcohol use, rather than childhood trauma, is more likely to cause male alcohol use disorder: findings from a case-control study in northern China

Characteristic   Patients (n = 129) Controls (n = 129) z /χ2 (p)
Age (years)a   43.0 (33.0, 50.0) 43.00 (33.0, 50.0)  
Years of educationa   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)  
non-physical 52 (20.16) 54 (20.93) 0.13 (0.90)
History of smoking, n (%) Yes 81 (31.40) 44 (17.05)  
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)  
psychosis, n (%) No 121 (46.90) 124 (48.06) 0.32 (0.57)
Family history of Yes 11 (4.26) 4 (1.55)  
alcohol addiction, n (%) No 118 (45.74) 125 (48.45) 2.55 (0.11)
  1. a Values are the median (25th percentile, 75th percentile)