Table 2.
Associations of environmental and dietary exposure factors and current wheeze in Chinese schoolchildren, adjusted for mainland propensity score (see text) and sex
|
Univariate model
|
Multivariate model
|
|||||
|---|---|---|---|---|---|---|
| Exposure factor | Unadjusted prevalence of current wheeze | Adjusted odds ratio (95% CI) | P value | Unadjusted prevalence of current wheeze | Adjusted odds ratio (95% CI) | P value |
| Cooking with gas: | ||||||
| None
|
24/1142 (2.1)
|
1.0
|
0.001 | 24/1058 (2.3)
|
1.0
|
0.004 |
| During first year but not at present
|
9/207 (4.3)
|
2.11 (0.97 to 4.61)
|
6/186 (3.2)
|
1.53 (0.61 to 3.80)
|
||
| At present only
|
71/1957 (3.6)
|
1.44 (0.89 to 2.33)
|
55/1609 (3.4)
|
1.40 (0.85 to 2.31)
|
||
| At present and during first year | 298/6316 (4.7) | 2.04 (1.34 to 3.13) | 255/5470 (4.7) | 2.00 (1.29 to 3.09) | ||
| Foam pillow: | ||||||
| None
|
329/8473 (3.9)
|
1.0
|
<0.001 | 287/7571 (3.8)
|
1.0
|
0.002 |
| During first year but not at present
|
1/25 (4.0)
|
1.04 (0.14 to 7.71)
|
1/21 (4.8)
|
1.43 (0.19 to 10.85)
|
||
| At present only
|
39/681 (5.7)
|
1.24 (0.87 to 1.79)
|
27/529 (5.1)
|
1.04 (0.67 to 1.61)
|
||
| At present and during first year | 26/236 (11.0) | 2.58 (1.66 to 3.99) | 25/202 (12.4) | 2.49 (1.55 to 3.98) | ||
| Cotton quilt: | ||||||
| None
|
75/1167 (6.4)
|
1.0
|
0.036 | 60/939 (6.4)
|
1.0
|
0.062 |
| During first year but not at present
|
29/895 (3.2)
|
0.58 (0.37 to 0.91)
|
22/793 (2.8)
|
0.51 (0.31 to 0.86)
|
||
| At present only
|
23/531 (4.3)
|
0.61 (0.38 to 0.98)
|
14/392 (3.6)
|
0.64 (0.35 to 1.18)
|
||
| At present and during first year | 273/7016 (3.9) | 0.72 (0.54 to 0.97) | 244/6199 (3.9) | 0.82 (0.59 to 1.14) | ||
| Damp housing: | ||||||
| None
|
294/7774 (3.8)
|
1.0
|
<0.001 | 255/6788 (3.8)
|
1.0
|
0.012 |
| During first year but not at present
|
31/664 (4.7)
|
1.31 (0.90 to 1.92)
|
29/616 (4.7)
|
1.41 (0.94 to 2.09)
|
||
| At present only
|
43/641 (6.7)
|
1.67 (1.19 to 2.33)
|
32/556 (5.8)
|
1.44 (0.98 to 2.12)
|
||
| At present and during first year | 28/400 (7.0) | 1.89 (1.26 to 2.83) | 24/363 (7.0) | 1.78 (1.15 to 2.75) | ||
| Fruit more than once daily: | ||||||
| No
|
285/6203 (4.6)
|
1.0
|
0.003 | 247/5436 (4.5)
|
1.0
|
0.004 |
| Yes | 116/3442 (3.4) | 0.71 (0.57 to 0.89) | 93/2887 (3.2) | 0.70 (0.54 to 0.89) | ||
| Raw vegetables once or more a week: | ||||||
| No
|
208/4458 (4.7)
|
1.0
|
0.048 | 196/4228 (4.6)
|
1.0
|
0.082 |
| Yes | 162/4696 (3.4) | 0.80 (0.65 to 1.00) | 144/4095 (3.5) | 0.81 (0.64 to 1.03) | ||