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Table 1 Individual characteristics and suicide ideation

From: Factors associated with suicide ideation among subway drivers in Korea

Variables   NSIG (%) SIG (%) p-value
N = 947 N = 33
Working duration (years) <5 94 (97.9) 2 (2.1) 0.339
5–10 183 (94.8) 10 (5.2)  
10–20 559 (92.2) 16 (2.8)  
≥20 111 (95.7) 5 (4.3)  
Level of education High school 173 (97.2) 5 (2.8) 0.209
Junior college 293 (95.1) 15 (4.9)  
Above college 481 (97.4) 13 (2.6)  
Marital status Unmarried 113 (94.2) 7 (5.8) <0.001
Married 815 (97.4) 22 (2.6)  
Divorced/separated/bereaved 19 (82.6) 4 (17.4)  
Smoking status Current smoker 306 (95.0) 16 (5.0) 0.150
Former smoker 311 (97.5) 8 (2.5)  
Never smoker 330 (97.3) 9 (2.7)  
Visiting a doctor’s office Yes 455 (95.6) 20 (4.4) 0.214
No 492 (97.4) 13 (2.6)  
Sleeping time (hours) <7 404 (94.6) 22 (5.4) 0.020
7–8 353 (98.3) 6 (1.7)  
≥8 190 (97.4) 5 (2.6)  
Sleeping well Yes 662 (97.9) 14 (2.1) 0.002
No 285 (93.3) 19 (6.7)  
Economic satisfaction Satisfactory 84 (97.7) 2 (2.3) 0.837
Ordinary 461 (96.6) 16 (3.4)  
Dissatisfactory 402 (96.4) 15 (3.6)  
  1. NSIG non suicide ideation group, SIG suicide ideation group