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Table 2 General characteristic of analyzed subjects

From: Ventilation impairment of residents around a cement plant

Variables LEG (n = 29) MEG (n=318) Total (n = 447) p-value
Sex Female 84 (65.1) 189 (59.4) 273 (61.1) 0.264
Male 45 (34.9) 129 (40.6) 174 (38.9)
Age (yrs) ≤59 30 (23.3) 109 (34.3) 139 (31.1) 0.000
60 ~ 69 29 (22.5) 104 (32.7) 133 (29.8)
≥70 70 (54.3) 105 (33.0) 175 (39.1)
Residence ≤25 29 (22.5) 84 (26.4) 113 (25.3) 0.404
>25 100 (77.5) 234 (73.6) 334 (74.7)
Current job None/Merchant 56 (43.4) 209 (65.7) 265 (59.3) 0.000
Farmer/Labor 73 (56.6) 109 (34.3) 182 (40.7)
Smoking history Never 88 (68.2) 213 (67.0) 301 (67.3) 0.801
Current/ex smoking* 41 (31.8) 105 (33.0) 146 (32.7)
Dust exposure No 111 (86.0) 246 (77.4) 357 (79.9) 0.038
Yes 18 (14.0) 72 (22.6) 90 (20.1)
Firewood No 37 (28.7) 176 (55.3) 213 (47.7) 0.000
Yes 92 (71.3) 142 (44.7) 234 (52.3)
  1. p-value by Chi-square test, MEG: more exposed group, LEG: less exposed group.
  2. *The rate of ex-smoking history in women was 1.5% (LEG 3.6%, MEG 0.5%) and current smokers were 2.9% (LEG 0.5%, MEG 3.6%).