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Table 1 Socio-demographic and SHS exposure factors among non-smoking residents of smoke-free homes by housing typea

From: Characterization of urinary cotinine in non-smoking residents in smoke-free homes in the Korean National Environmental Health Survey (KoNEHS)

  Apartment Attached housing Detached housing Total
  % (n) % (n) % (n) % (n)
Total 36.9 (287) 19.2 (131) 43.8 (396) 100.0 (814)
Sex     
 Men 71.9 (204) 63.2 (82) 57.6 (213) 64.0 (499)
 Women 28.1 (83) 36.8 (49) 42.4 (183) 36.0 (315)
Age (year)     
 19–39 34.3 (79) 27.0 (32) 12.7 (33) 23.5 (144)
 40–59 41.7 (135) 37.1 (50) 38.0 (159) 39.2 (344)
  ≥ 60 24.0 (73) 35.8 (49) 49.3 (204) 37.3 (326)
Education     
 Middle school or less 21.2 (69) 33.7 (54) 59.7 (254) 40.5 (377)
 High school 43.8 (117) 34.9 (41) 25.5 (100) 34.1 (258)
 College or higher 35.0 (101) 31.4 (36) 14.8 (42) 25.4 (179)
Household income (USD/month)     
  ≤ 1000 7.3 (27) 25.9 (36) 38.7 (157) 24.6 (220)
 1001–2000 24.6 (66) 29.7 (40) 30.4 (113) 28.1 (219)
 2001–3000 31.3 (91) 21.4 (29) 17.5 (75) 23.4 (195)
  > 3000 36.7 (103) 23.0 (26) 13.4 (51) 23.8 (180)
Former smoker     
 Never smoked 83.4 (241) 71.8 (95) 72.4 (275) 76.3 (611)
 >1 year not smoking 15.0 (43) 19.7 (26) 23.2 (102) 19.5 (171)
 ≤1 year not smoking 1.6 (3) 8.6 (10) 4.4 (19) 4.2 (32)
Frequency of SHS odor (times/week)     
 None 79.3 (231) 83.9 (106) 85.4 (333) 82.8 (670)
 1–2 10.5 (35) 8.6 (14) 7.2 (30) 8.7 (79)
 3–6 6.2 (11) 4.2 (5) 3.6 (14) 4.7 (30)
 Every day 4.0 (10) 3.3 (6) 3.8 (19) 3.8 (35)
Duration of SHS odor (min/day)     
 None 79.3 (231) 83.9 (106) 85.4 (333) 82.8 (670)
 1–5 9.9 (28) 5.8 (10) 3.7 (18) 6.4 (56)
 6–30 4.6 (12) 9.5 (12) 5.5 (22) 6.0 (46)
  ≥ 31 6.2 (16) 0.8 (3) 5.4 (23) 4.8 (42)
  1. aAll estimated data are based on weighted analyses