Table 5 Chemical impurities, particles and fibres
| Â | Respondents | Confidence interval 95% | ||
|---|---|---|---|---|
| Â | N | % | Lower Bound (%) | Upper Bound (%) |
Smoking inside the residence daily | Â | Â | Â | Â |
Respondent him/herself | 32 | 2.5 | 1.6 | 3.4 |
Someone else | 27 | 2.2 | 1.4 | 3.0 |
Using insecticides | 336 | 28.5 | 25.9 | 31.1 |
Using herbicides | 161 | 16.7 | 14.3 | 19.1 |
Unpleasant odours outside | Â | Â | Â | Â |
Traffic | 136 | 10.4 | 8.6 | 12.2 |
Farming | 128 | 9.8 | 8.1 | 11.5 |
Smoking | 119 | 9.1 | 7.4 | 10.8 |
Industry | 116 | 8.8 | 7.2 | 10.4 |
Smoke | 101 | 7.7 | 6.2 | 9.2 |
No odours outside | 395 | 30.1 | 27.5 | 32.7 |
Unpleasant odours inside | Â | Â | Â | Â |
Food | 112 | 8.5 | 6.9 | 10.1 |
Sewer | 75 | 5.7 | 4.4 | 7.0 |
Stuffy air | 73 | 5.6 | 4.3 | 6.9 |
Tobacco smoke | 65 | 5.0 | 3.7 | 6.3 |
No odours inside | 587 | 44.7 | 41.8 | 47.6 |
Asbestos | Â | Â | Â | Â |
In living areas | 10 | 0.8 | 0.3 | 1.3 |
Outside living areas | 52 | 4.1 | 3.0 | 5.2 |
Unaware of the asbestos | 362 | 28.8 | 26.3 | 31.3 |
Radon | Â | Â | Â | Â |
Elevated radon levels | 9 | 0.7 | 0.2 | 1.2 |
Unaware of the radon | 830 | 65.8 | 63.2 | 68.4 |