Table 3.
Crude and Adjusted Relative Ages at First Acute Lower Respiratory Infection According to Child and Household Characteristics (Generalized Gamma Distribution Models) in the Mirpur Birth Cohort (n = 257), Dhaka, Bangladesh, 2008–2011
| Child or Household Characteristic and Increment of Change | Relative Age at First ALRI |
|||||
|---|---|---|---|---|---|---|
| Crude Age, months | 95% CI | P Value | Adjusted Age, months | 95% CI | P Value | |
| Weighed <2,500 g within 72 hours of birth (yes/no) | 0.67 | 0.44, 1.04 | 0.076 | 0.71 | 0.42, 1.19 | 0.192 |
| Male sex (yes/no) | 0.69 | 0.45, 1.04 | 0.097 | 0.70 | 0.47, 1.06 | 0.093 |
| 1-unit increase in mean weight-for-age z score | 1.17 | 0.92, 1.50 | 0.203 | 0.99 | 0.74, 1.32 | 0.935 |
| Each additional month of breastfeeding | 1.01 | 0.98, 1.03 | 0.617 | 1.01 | 0.99, 1.03 | 0.406 |
| Each additional person per m2 | 1.01 | 0.80, 1.28 | 0.939 | 0.91 | 0.27, 2.23 | 0.460 |
| Mother had more than elementary school education (yes/no) | 1.38 | 0.86, 2.23 | 0.185 | 1.03 | 0.63, 1.68 | 0.902 |
| Ownership of both a cell phone and a television (yes/no) | 1.60 | 1.05, 2.42 | 0.028 | 1.32 | 0.85, 2.03 | 0.213 |
| At least 1 household member smoked cigarettes indoors (yes/no) | 0.81 | 0.51, 1.29 | 0.384 | |||
| 1-hour increase in indoor PM2.5 concentrations >100 µg/m3 | 0.87 | 0.79, 0.96 | 0.005 | 0.88 | 0.79, 0.98 | 0.021 |
| Additional model parameters | ||||||
| Scale | −0.40 | −0.96, 0.15 | ||||
| Shape | 1.61 | 1.43, 1.82 | ||||
Abbreviations: ALRI, acute lower respiratory infection; CI, confidence interval; PM2.5, particulate matter less than or equal to 2.5 µm in diameter.