Table 6.
Multivariable robust regression models for predictors of lung function indices (FEV1/FVC ratio) (N = 1056)
| Predictors | β coefficients (95% CI) | p value | |
|---|---|---|---|
| Unadjusted | Adjusteda | ||
| Household PM2.5 (μg/m3) | |||
| Low (< 92.4 μg/m3) | 0 (reference) | 0 (reference) | |
| [<25th percentile] | |||
| High (92.4–196.8 μg/m3) | − 0.098 (− 0.128 - -0.069) | − 0.044 (− 0.074 - -0.013) | 0.005 |
| [25th – 75th percentile] | |||
| Higher (> 196.8 μg/m3) | −0.117 (− 0.166 - -0.068) | −0.070 (− 0.124 - -0.015) | 0.013 |
| [> 75th percentile] | |||
| Cooking age | |||
| < 5 years | 0 (reference) | 0 (reference) | |
| 5–15 years | −0.082 (− 0.093 - -0.071) | −0.028 (− 0.055 - -0.000) | 0.044 |
| Above 15 years | − 0.122 (− 0.142 - -0.102) | −0.069 (− 0.120 - -0.019) | 0.007 |
| Cooking hours per day | |||
| < 2.5 h | 0 (reference) | 0 (reference) | |
| 2.5–4 h | −0.047 (− 0.058 - -0.036) | −0.037 (− 0.068 - -0.006) | 0.020 |
| > 4 h | −0.108 (− 0.120 - -0.097) | −0.069 (− 0.112 - -0.025) | 0.002 |
| Environmental tobacco smoke (ETS) Exposure | |||
| None | 0 (reference) | 0 (reference) | |
| Childhood | −0.003 (− 0.031 - -0.024) | −0.012 (− 0.051–0.025) | 0.510 |
| Adulthood | −0.021 (− 0.070 - -0.026) | 0.040 (− 0.018–0.100) | 0.177 |
| Both | −0.151 (− 0.177 - -0.125) | −0.063 (− 0.123 - -0.002) | 0.041 |
aAdjusted for age, BMI, marital status, education, socio-economic status, kitchen ventilation