|
Kitchen location
|
|
Separated from other rooms
|
1158 (95.9)
|
587 (96.2)
|
0.089
|
0.756
|
|
Within living rooms or bedrooms
|
49 (4.1)
|
23 (3.8)
|
|
Kitchen size
|
|
≥ 4 m2
|
1042 (86.3)
|
526 (86.2)
|
0.003
|
0.095
|
|
< 4 m2
|
165 (13.7)
|
84 (13.8)
|
|
Frequency of opening kitchen windows
|
|
Occasionally or never
|
45 (3.7)
|
0 (0)
|
49.822
|
< 0.001***
|
|
Sometimes
|
118 (9.8)
|
20 (3.3)
|
|
Most of the time
|
142 (11.8)
|
78 (12.8)
|
|
Always
|
902 (74.7)
|
512 (83.9)
|
|
Stove used for cooking or warming
|
|
Clean fuel stove
|
476 (39.4)
|
371 (60.8)
|
188.560
|
< 0.001***
|
|
Fuel mix stove
|
263 (21.8)
|
190 (31.1)
|
|
Coal stove
|
468 (38.8)
|
49 (8.1)
|
|
Duration of cooking per day
|
|
< 30 min
|
581 (48.1)
|
384 (63.0)
|
90.253
|
< 0.001***
|
|
30–60 min
|
534 (44.2)
|
136 (22.3)
|
|
> 60 min
|
92 (7.6)
|
90 (14.8)
|
|
Cooking oil fumes
|
|
Never or seldom
|
819 (67.9)
|
427 (70.0)
|
0.866
|
0.352
|
|
Frequently or sometimes
|
388 (32.1)
|
183 (30.0)
|
|
Frequency of fan or range hood usage
|
|
Never
|
65 (5.4)
|
22 (3.6)
|
102.680
|
< 0.001***
|
|
Seldom
|
46 (3.8)
|
107 (17.5)
|
|
Sometimes
|
183 (15.2)
|
97 (15.9)
|
|
Always
|
913 (75.6)
|
384 (3.0)
|
|
Kitchen infested with pests
|
|
Never
|
1071 (88.7)
|
553 (86.2)
|
7.730
|
0.021*
|
|
Seldom
|
122 (10.1)
|
43 (8.4)
|
|
Sometimes
|
14 (1.2)
|
14 (5.4)
|
|
Person(s) sharing in one bedroom
|
|
≥ 3 persons
|
222 (18.4)
|
113 (18.5)
|
0.005
|
0.945
|
|
< 3 persons
|
985 (81.6)
|
497 (81.5)
|
|
Carpet
|
|
No
|
1134 (94.0)
|
579 (94.9)
|
0.701
|
0.402
|
|
Yes
|
73 (6.0)
|
31 (5.1)
|
|
Carpet use history (years)
|
|
≤ 1 y
|
1143 (94.7)
|
584 (95.7)
|
1.412
|
0.494
|
|
1–5 y
|
49 (4.1)
|
18 (3.0)
|
|
> 5 y
|
15 (1.2)
|
8 (1.3)
|
|
Mattress material
|
|
Cloth or no mattress
|
785 (65.0)
|
503 (82.5)
|
83.037
|
<0.001***
|
|
Foam or grass/grain husks
|
251 (20.8)
|
95 (15.6)
|
|
Feather or hairpiece
|
171 (14.2)
|
12 (2.0)
|
|
Mattress use history (years)
|
|
≤ 1 y
|
509 (42.2)
|
279 (45.7)
|
2.156
|
0.340
|
|
1–5 y
|
582 (48.2)
|
274 (44.9)
|
|
> 5 y
|
116 (9.6)
|
57 (9.3)
|
|
Pillow material stuffed
|
|
Cloth or no pillow
|
954 (79.1)
|
535 (87.7)
|
45.642
|
<0.001***
|
|
Grass or foam
|
127 (10.5)
|
65 (10.7)
|
|
Feather
|
126 (10.4)
|
10 (1.6)
|
|
Keep pets
|
|
No
|
937 (68.9)
|
487 (79.8)
|
106.246
|
<0.001***
|
|
Yes
|
270 (31.1)
|
123 (20.2)
|
|
Pet allowed in bedroom
|
|
No
|
1135 (94.0)
|
568 (93.1)
|
0.583
|
0.445
|
|
Yes
|
72 (6.0)
|
42 (6.9)
|
|
Water damage
|
|
No
|
1112 (92.1)
|
575 (94.3)
|
2.775
|
0.096
|
|
Yes
|
95 (7.9)
|
35 (5.7)
|
|
Musty air in bedroom
|
|
No
|
1108 (91.8)
|
586 (96.1)
|
11.694
|
0.001**
|
|
Yes
|
99 (8.2)
|
24 (3.9)
|
|
Mold in bedroom
|
|
No
|
1122 (93.0)
|
593 (97.2)
|
13.848
|
<0.001***
|
|
Yes
|
85 (7.0)
|
17 (2.8)
|
|
New furniture
|
|
No
|
1119 (92.7)
|
593 (97.2)
|
15.097
|
<0.001***
|
|
Yes
|
88 (7.3)
|
17 (2.8)
|
|
Decoration and fitment
|
|
No
|
1147 (95.0)
|
599 (98.2)
|
10.829
|
0.001**
|
|
Yes
|
60 (5.0)
|
11 (1.8)
|
|
Smoking status
|
|
Non-smokers
|
688 (57.0)
|
365 (59.8)
|
1.803
|
0.406
|
|
Ex-smokers
|
167 (13.8)
|
85 (13.9)
|
|
Current smokers
|
352 (29.2)
|
160 (26.2)
|
|
Exposure to second-hand smoke, ETS
|
|
Yes
|
222 (18.4)
|
518 (84.4)
|
742.80
|
< 0.001***
|
|
No
|
985 (81.6)
|
92 (15.6)
|
