Table 2.
Demographic Factors and Severity of ARIsa
| Variable | Category | Nonsevere | Severe | Odds Ratio (Unadjusted) | 95% Confidence Interval |
|---|---|---|---|---|---|
| Number | 2524 (89%) | 327 (11%) | - | - | |
| Gender | Female | 1270 (90%) | 143 (10%) | Ref | - |
| Male | 1254 (87%) | 184 (13%) | 1.3 | 1.0–1.7 | |
| Age | 0–5 M | 342 (83%) | 70 (17%) | 3.4 | 2.0–5.8 |
| 6–11 M | 460 (88%) | 64 (12%) | 2.3 | 1.3–3.9 | |
| 1 Y | 625 (84%) | 116 (16%) | 3.1 | 1.8–5.1 | |
| 2 Y | 473 (92%) | 41 (8%) | 1.4 | 0.81–2.5 | |
| 3 Y | 344 (95%) | 19 (5%) | 0.91 | 0.49–1.7 | |
| 4 Y | 280 (94%) | 17 (6%) | Ref | - | |
| Height-for-age Z-score | ≥−2 | 1735 (88%) | 226 (12%) | Ref | - |
| ≥−3, <−2 | 453 (89%) | 254 (11%) | 0.91 | 0.66–1.3 | |
| <−3 | 336 (88%) | 47 (12%) | 1.1 | 0.76–1.5 | |
| Low birth weight | No | 1815 (88%) | 242 (12%) | Ref | - |
| (<2500 grams) | Yes | 289 (91%) | 28 (9%) | 0.73 | 0.44–1.2 |
| Socioeconomic status score | 37–93 | 706 (89%) | 87 (11%) | Ref | - |
| 25–36 | 933 (91%) | 96 (9%) | 0.84 | 0.60–1.2 | |
| 0–24 | 885 (86%) | 144 (14%) | 1.3 | 0.96–1.8 |
Abbreviations: ARIs, acute respiratory infections; M, month; Ref, reference; Y, year.
aOdds ratios for severe ARIs were calculated by binomial logistic regression analyses with generalized estimating equations.