Variable | Totala | Prevalence (%) | Crude OR (95% CI)b | p | Adjusted OR (95% CI)b,c | p |
---|---|---|---|---|---|---|
Sex of child | Â | Â | Â | Â | Â | Â |
Female | 1779 | 20.8 | 1 | Â | 1 | Â |
Male | 1629 | 15.3 | 0.69(0.57-0.82) | 0.000 | 0.65 (0.53-0.81) | 0.002 |
Residential area | Â | Â | Â | Â | Â | Â |
Kempton Park | 1114 | 21.9 | 1 | Â | 1 | Â |
Tembisa | 2290 | 16.3 | 0.69 (0.58-8.83) | 0.000 | 0.61 (0.49-0.77) | 0.000 |
Vigorous physical activity per week | Â | Â | Â | Â | Â | Â |
Never | 980 | 13.6 | 1 | Â | 1 | Â |
Once or twice per week | 1409 | 20.7 | 1.66 (1.33-2.08) | 0.000 | 1.59 (1.22-2.07) | 0.002 |
Three or more time a week | 979 | 19.4 | 1.53 (1.20-1.95) | 0.001 | 1.32 (0.99-1.77) | 0.210 |
Use of paracetamol | Â | Â | Â | Â | Â | Â |
Never | 716 | 13.0 | 1 | Â | 1 | Â |
At least once a year | 1104 | 15.5 | 1.22 (0.93-1.61) | Â | 0.91 (0.65-1.26) | 0.586 |
At least once per month | 1523 | 22.5 | 1.93 (1.51-2.48) | 0.000 | 1.55 (1.14-2.09) | 0.004 |
Frequency of trucks passing near homes on weekdays | Â | Â | Â | Â | Â | Â |
Never | 560 | 14.5 | 1 | Â | 1 | Â |
Seldom | 1029 | 19.0 | 1.38 (1.04-1.83) | 0.025 | 1.24 (0.89-1.74) | 0.151 |
Frequently through the day | 580 | 16.4 | 1.15 (0.83-1.59) | 0.371 | 0.97 (0.65-1.44) | 0.874 |
Almost the whole day | 1203 | 20.3 | 1.50 (1.14-1.97) | 0.004 | 1.61 (1.15-2.24) | 0.006 |
Having a cat in and around the house in the past 12Â months | Â | Â | Â | Â | Â | Â |
No | 3129 | 17.9 | 1 | Â | 1 | Â |
Yes | 264 | 21.6 | 1.55 (1.23-1.95) | 0.000 | 1.49 (1.13-1.98) | 0.005 |
ETS exposure at school in the past 30Â days | Â | Â | Â | Â | Â | Â |
No | 1446 | 16.2 | 1 | Â | 1 | Â |
Yes | 1169 | 20.2 | 1.3 (0.06-1.59) | 0.009 | 1.33 (1.08-1.64) | 0.020 |