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Table 1 Baseline characteristics of study participants by sex

From: Sex differences in the association between asthma incidence and modifiable risk factors in Korean middle-aged and older adults: NHIS-HEALS 10-year cohort

  Men Women
n (%) n (%)
Total 254,643 204,886
Age
 40–49 128,281 (50.4) 90,458 (44.2)
 50–59 71,765 (28.2) 58,433 (28.5)
 60–69 43,079 (16.9) 42,448 (20.7)
  ≥ 70 11,518 (4.5) 13,547 (6.6)
Household income
 Low 62,487 (24.5) 75,521 (36.9)
 Medium 97,249 (38.2) 70,298 (34.3)
 High 94,907 (37.3) 59,067 (28.8)
Insurance type
 Self-employed insured 79,514 (31.2) 94,455 (46.1)
 Employed insured 174,968 (68.7) 110,128 (53.8)
 Medical aid beneficiary 161 (0.1) 303 (0.2)
BMI
 Underweight ( < 18.5 kg/m2) 5548 (2.2) 4647 (2.3)
 Normal (18.5–< 23 kg/m2) 86,195 (33.9) 77,837 (38.0)
 Overweight (23–< 25 kg/m2) 72,614 (28.5) 53,585 (26.2)
 Obesity (25–< 30 kg/m2) 85,063 (33.4) 61,638 (30.1)
 Severe obesity (≥ 30 kg/m2) 5223 (2.1) 7179 (3.5)
Smoking status
 Unknown 11,751 (4.6) 7766 (3.8)
 Never smoker 101,698 (39.9) 189,987 (92.7)
 Past smoker 37,778 (14.8) 1825 (0.9)
 Current smoker 103,416 (40.6) 5308 (2.6)
Alcohol consumption
 Unknown 3612 (1.4) 5007 (2.4)
 None 85,986 (33.8) 164,513 (80.3)
  < Twice a week 115,545 (45.4) 31,637 (15.4)
  ≥ Three times a week 49,500 (19.4) 3729 (1.8)
Physical activity
 Unknown 7844 (3.1) 6031 (2.9)
 None 121,735 (47.8) 133,098 (65.0)
  < Twice a week 73,988 (29.1) 33,089 (16.2)
  ≥ Three times a week 51,076 (20.1) 32,668 (15.9)
  1. BMI = Body Mass Index
  2. Baseline characteristics were measured in 2002/2003