Table II.
Prevalence of asthma and related symptoms in the MCS cohort (wt %, using appropriate weights for each sweep).
| Asthma indicator | Conception status |
||||||
|---|---|---|---|---|---|---|---|
| Unplanned | Mistimed | Planned | Subfertile | OI | ART | Total | |
| Unweighted n (asthma)/N | |||||||
| Age 5 years | 372/2039 | 580/3645 | 885/6575 | 83/505 | 18/173 | 18/104 | 1956/13 041 |
| Age 7 years | 347/1827 | 559/3217 | 896/5837 | 83/463 | 23/154 | 18/87 | 1926/11 585 |
| Asthma | |||||||
| Age 5 years | 17.7 | 15.8 | 13.2 | 16.0 | 11.8 | 23.7 | 15.0 |
| Age 7 years | 18.4 | 17.8 | 14.9 | 17.0 | 15.9 | 22.9 | 16.5 |
| Wheezing in the last year | |||||||
| Age 5 years | 18.2 | 16.8 | 14.3 | 16.8 | 13.8 | 22.4 | 15.7 |
| Age 7 years | 12.3 | 12.6 | 11.3 | 13.4 | 7.6 | 17.0 | 11.9 |
| Asthma medicationsa | |||||||
| Age 5 years | 5.0 | 3.8 | 3.2 | 4.7 | 5.2 | 11.8 | 3.8 |
| Age 7 years | 4.8 | 5.4 | 4.0 | 6.1 | 6.1 | 9.2 | 4.7 |
wt% indicates percentages weighted for effects of sampling and non-response.
aThese are prescribed medications (any pills, syrups or other liquids, inhalers, patches, creams, suppositories or injections) taken every day for 2 weeks or more. Parent reported the name of the medication and those used to treat asthma were identified from British National Formulary codes.