Table 4.
Prevalence odds ratios (PORs) and 95% confidence intervals (CIs) for respiratory symptoms
| Peak arsenic before age 10 | Crude | Adjusteda | ||||||
|---|---|---|---|---|---|---|---|---|
| 0–250 μg/l (n = 65) | > 800μg/l (n = 32) | |||||||
| POR | 95% CI | P value | POR | 95% CI | P value | |||
| Chronic cough | 7 (11%) | 5 (16%) | 1.53 | 0.45–5.28 | 0.26 | 1.30 | 0.22–7.80 | 0.39 |
| Chronic phlegm | 5 (7%) | 2 (6%) | 0.80 | 0.15–4.37 | 0.38 | 0.93 | 0.10–9.01 | 0.48 |
| Chronic bronchitis | 2 (3%) | 1 (3%) | 1.02 | 0.09–11.6 | 0.49 | N/A | N/A | N/A |
| Trouble breathing | ||||||||
| Rarely | 16 (25%) | 4 (13%) | 0.44 | 0.13–1.44 | 0.08 | 1.20 | 0.25–5.73 | 0.41 |
| Often | 2 (3%) | 2 (6%) | 2.10 | 0.28–15.6 | 0.23 | 1.01 | 0.06–17.2 | 0.49 |
| Breathlessness walking | ||||||||
| Fast/uphill | 15 (23%) | 13 (41%) | 2.28 | 0.92–5.67 | 0.04 | 2.53 | 0.68–9.45 | 0.08 |
| At group pace | 9 (14%) | 12 (38%) | 3.73 | 1.37–10.2 | 0.004 | 5.94 | 1.36–26.0 | 0.009 |
| At own pace | 7 (11%) | 10 (31%) | 3.77 | 1.27–11.1 | 0.006 | 3.89 | 0.90–16.8 | 0.03 |
| Any respiratory symptom | 20 (31%) | 14 (44%) | 1.75 | 0.73–4.20 | 0.11 | 2.63 | 0.78–8.92 | 0.06 |
N/A not available (adjustment variables missing for 1 “yes” respondent)
aAdjusted for age, sex, smoking, childhood secondhand smoke, wood, charcoal, or kerosene fuel use in childhood home, occupational air pollution, and education