Table 5.
Prevalence of wheeze ever, current wheeze and severe wheeze amongst the participants from Tembisa along with crude and adjusted odd ratios
| Total a | Prevalence (%) | Crude OR (95% CI) b | p | Adjusted OR(95% CI) b | p | |
|---|---|---|---|---|---|---|
|
Wheeze ever
c
|
|
|
|
|
|
|
|
Vigorous physical activity per week |
|
|
|
|
|
|
| Never or occasionally |
696 |
20.8 |
1 |
|
1 |
1 |
| Once or twice per week |
975 |
40.1 |
1.84 (1.47-2.31) |
0.000 |
1.82 (1.44-2.28) |
0.000 |
| Three or more times a week |
605 |
32.4 |
1.82 (1.41-2.33) |
0.000 |
1.75 (1.36-2.26) |
0.000 |
|
Residential heating fuel type most frequently used |
|
|
|
|
|
|
| Electricity |
1233 |
26.7 |
1 |
|
1 |
|
| Gas |
214 |
39.2 |
1.77 (1.31-2.40) |
0.000 |
1.68 (1.23-2.28) |
0.001 |
| Paraffin |
607 |
30.6 |
1.21 (0.98-1.50) |
0.075 |
1.16 (0.94-1.45) |
0.159 |
| Open fires (wood, coal) |
207 |
20.0 |
1.06 (0.77-1.48) |
0.688 |
1.01 (0.73-1.41) |
0.912 |
|
Current wheeze
d
| ||||||
|
Residential heating fuel type most frequently used |
|
|
|
|
|
|
| Electricity |
1225 |
15.2 |
1 |
|
1 |
|
| Gas |
212 |
22.2 |
1.59 (1.11-2.27) |
0.011 |
1.61 (1.08-2.39) |
0.018 |
| Paraffin |
606 |
17.5 |
1.18 (0.91-1.53) |
0.205 |
0.81 (0.58-1.13) |
0.222 |
| Open fires, wood, coal |
207 |
31.0 |
0.83 (0.54-1.29) |
0.424 |
0.63 (0.38-1.05) |
0.077 |
|
ETS exposure at home in the past 30 days |
|
|
|
|
|
|
| No |
914 |
14.1 |
1 |
|
1 |
|
| Yes |
998 |
18.7 |
1.40 (1.09-1.79) |
0.007 |
1.36 (1.06-1.77) |
0.017 |
|
Vigorous physical activity per week |
|
|
|
|
|
|
| Never or occasionally |
692 |
11.6 |
1 |
|
1 |
|
| Once or twice per week |
970 |
18.8 |
1.76 (1.33-2,34) |
0.000 |
1.81 (1.31-2.50) |
0.000 |
| Three or more times a week |
603 |
18.2 |
1.70 (1.25-2.33) |
0.001 |
1.61 (1.12-2.30) |
0.009 |
|
Severe wheeze
e
|
|
|
|
|
|
|
|
Residential heating fuel type most frequently used |
|
|
|
|
|
|
| Electricity |
186 |
66.1 |
1 |
|
1 |
|
| Gas |
47 |
78.2 |
1.89 (0.88-4.05) |
0.100 |
1.95 (0.89-4.27) |
0.093 |
| Paraffin |
106 |
79.2 |
1.95 (1.11-3.42) |
0.019 |
1.85 (1.04-3.28) |
0.034 |
| Open fires, wood, coal |
27 |
77.7 |
1.79 (0.68-4.66) |
0.232 |
1.76 (0.66-4.68) |
0.257 |
|
Frequency of trucks passing near homes on weekdays |
|
|
|
|
|
|
| Never |
52 |
55.7 |
|
|
1 |
|
| Seldom |
80 |
90.2 |
1.64 (0.84-3.59) |
0.131 |
1.90 (0.90-4.09) |
0.088 |
| Frequently through the day |
61 |
70.1 |
1.89 (0.87-4.11) |
0.107 |
2.02 (0.91-4.47) |
0.080 |
| Almost all day | 180 | 80.55 | 3.28 (1.69-6.35) | 0.000 | 3.34 (1.70-6.55) | 0.000 |
aTotals for each risk factor are different due to difference in missing values.
bValues that are statistically significant at less than 0.02 for the crude OR and less than 0.05 for the adjusted OR are in bold font.
cModel adjusted for: Vigorous physical activity and residential heating fuel.
dModel adjusted for: Vigorous physical activity, residential heating fuel and ETS exposure at home.
eModel adjusted for: Residential heating fuel and frequency of trucks passing near homes.