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Table 1 Participant characteristics

From: Associations of smoking behavior with lifestyle and mental health among Japanese dental students

Variable Female (%) Male (%) Total (%)
Participants 200 (44.2) 253 (55.8) 453 (100)
Age (years)
 mean ± SD 21.69 ± 2.32 22.38 ± 2.58 22.07 ± 2.49
 18–20 68 (34.0) 67 (26.5) 135 (29.8)
 20–22 84 (42.0) 110 (43.5) 194 (42.8)
 23–26 39 (19.5) 54 (21.3) 93 (20.5)
  ≥ 27 9 (4.5) 22 (8.7) 31 (6.8)
Academic year    Responses (%)
 1st 34 (17.0) 42 (16.6) 76/97 (78.4)
 2nd 40 (20.0) 46 (18.2) 86/103 (83.5)
 3rd 35 (17.5) 34 (13.4) 69/97 (71.1)
 4th 39 (20.5) 37 (15.0) 76/96 (79.2)
 5th 22 (11.0) 46 (18.2) 68/87 (78.2)
 6th 30 (15.0) 48 (19.0) 78/96 (81.3)
Ever smoked
 Never 183 (91.5) 163 (64.4) 346 (76.4)
 Yes 17 (8.5) 90 (35.6) 107 (23.6)
  1. SD standard deviation