TABLE 3.
ASSOCIATION BETWEEN SWIMMING IN DIFFERENT AGE PERIODS AND EVER ASTHMA, CURRENT SYMPTOMS, AND ATOPIC STATUS AT APPROXIMATELY 7 AND 10 YEARS OF AGE
| Age 7 yr |
Age 10 yr |
||||||
|---|---|---|---|---|---|---|---|
| Swimming | OR* | 95% CI | N | OR* | 95% CI | N | |
| Ever asthma | |||||||
| Age < 4 yr | Never | 1 | 4440 | ||||
| Ever | 1.01 | 0.81–1.26 | |||||
| Age 4–7 yr | Low | 1 | 4425 | ||||
| Medium | 1.09 | 0.88–1.35 | |||||
| High | 1.07 | 0.87–1.32 | |||||
| Age 0–7 yr | Lowest | 1 | 4193 | ||||
| Highest | 0.88 | 0.56–1.38 | |||||
| Current asthma | |||||||
| Age < 4 yr | Never | 1 | 4,751 | 1 | 3,876 | ||
| Ever | 0.73 | 0.55–0.98 | 0.90 | 0.67–1.21 | |||
| Age 4–7 yr | Low | 1 | 4,481 | 1 | 4,147 | ||
| Medium | 1.00 | 0.76–1.31 | 0.78 | 0.59–1.05 | |||
| High | 0.97 | 0.75–1.25 | 0.91 | 0.69–1.19 | |||
| Age 0–7 yr | Lowest | 1 | 4,243 | 1 | 3,497 | ||
| Highest | 0.50 | 0.28–0.87 | 0.61 | 0.32–1.15 | |||
| Current wheezing | |||||||
| Age < 4 yr | Never | 1 | 4,757 | 1 | 3,885 | ||
| Ever | 0.83 | 0.63–1.11 | 0.95 | 0.70–1.29 | |||
| Age 4–7 yr | Low | 1 | 4,488 | 1 | 3,670 | ||
| Medium | 0.93 | 0.70–1.24 | 0.90 | 0.64–1.26 | |||
| High | 1.12 | 0.86–1.46 | 1.06 | 0.77–1.45 | |||
| Age 0–7 yr | Lowest | 1 | 4,249 | 1 | 3,504 | ||
| Highest | 0.58 | 0.33–1.02 | 0.60 | 0.31–1.14 | |||
| Current asthma medication | |||||||
| Age < 4 yr | Never | 1 | 4,511 | ||||
| Ever | 0.70 | 0.53–0.93 | |||||
| Age 4–7 yr | Low | 1 | 4,437 | ||||
| Medium | 0.87 | 0.68–1.12 | |||||
| High | 0.97 | 0.76–1.23 | |||||
| Age 0–7 yr | Lowest | 1 | 4,204 | ||||
| Highest | 0.58 | 0.35–0.98 | |||||
| Current eczema | |||||||
| Age < 4 yr | Never | 1 | 4,784 | 1 | 4,430 | ||
| Ever | 0.93 | 0.75–1.16 | 1.07 | 0.85–1.34 | |||
| Age 4–7 yr | Low | 1 | 4,448 | 1 | 4,181 | ||
| Medium | 0.95 | 0.76–1.20 | 0.88 | 0.69–1.12 | |||
| High | 1.12 | 0.91–1.38 | 0.99 | 0.79–1.23 | |||
| Age 0–7 yr | Lowest | 1 | 4,267 | 1 | 3,977 | ||
| Highest | 0.66 | 0.42–1.02 | 0.86 | 0.53–1.39 | |||
| Current hay fever | |||||||
| Age < 4 yr | Never | 1 | 4,726 | 1 | 3,828 | ||
| Ever | 1.16 | 0.85–1.56 | 1.05 | 0.81–1.36 | |||
| Age 4–7 yr | Low | 1 | 4,451 | 1 | 3,617 | ||
| Medium | 1.17 | 0.84–1.63 | 0.78 | 0.58–1.05 | |||
| High | 1.17 | 0.86–1.60 | 1.00 | 0.76–1.31 | |||
| Age 0–7 yr | Lowest | 1 | 4210 | 1 | 3,454 | ||
| Highest | 1.70 | 0.82–3.52 | 0.85 | 0.46–1.56 | |||
Definition of abbreviations: CI = confidence interval; OR = odds ratio.
N = 5,738. Current indicates symptoms in the last 12 mo.
*
Adjusting variables per model: Ever asthma: maternal education, maternal asthma, birth weight, maternal age, TV watching, atopy; Current asthma: maternal asthma, education, atopy; Wheezing: maternal asthma, social class, atopy; Asthma medication: maternal asthma, atopy, education, TV watching; Eczema: maternal allergy, atopy and sex. Hay fever: maternal hay fever, social class, atopy.
Bold indicates P < 0.05.