Table 8.
Odds ratios for use of prescribed asthma drugs at 5 years
| Prescribed asthma drugs at 5 years | Gestation at birth (weeks) | ||||
|---|---|---|---|---|---|
| <32 (n=166) | 32-33 (n=149) | 34-36 (n=856) | 37-38 (n=2851) | 39-41 (n=9964) | |
| No (%) | 17 (11.3) | 11 (9.4) | 65 (7.6) | 121 (4.9) | 369 (3.4) |
| Unadjusted odds ratio (95% CI) | 3.6 (1.8 to 7.13) | 3.0 (1.5 to 5.8) | 2.4 (1.7 to 3.3) | 1.0 (0.6 to 1.9) | 1 |
| Adjusted* odds ratio (95% CI) | 3.5 (1.7 to 7.2) | 2.8 (1.4 to 5.6) | 2.2 (1.6 to 3.1) | 1.4 (1.1 to 1.8) | 1 |
All percentages and odds ratios are weighted with sampling and non-response weights.
*Adjusted for child’s age at interview, sex, and ethnicity; mother’s age at birth, marital status, education, and occupation; whether child was mother’s firstborn; whether child was ever breast fed; and smoking and drinking during pregnancy.