Estimated population prevalences† (per 100 children) of morbidity and service use, and estimated prevalence ratios (2002:1991)
| Estimated population prevalence (per 100) | |||
|---|---|---|---|
| 1991 | 2002 | 2002:1991 prevalence ratio(95% CI) | |
| *p<0.05, **p<0.01, ***p<0.001. | |||
| †Population: 7–8 year old children attending schools in the London borough of Croydon. | |||
| ‡Frequent = five or more attacks. | |||
| §Attacks of asthma and or wheezing in the last year at screen with (atopic) or without (non-atopic) a reported history of eczema and/or allergic nose problems. | |||
| Screening survey data (morbidity) | |||
| Attacks of asthma or wheezing in last year | 12.9 | 17.8 | 1.39 (1.23 to 1.56)*** |
| Frequent attacks in last year‡ | 2.6 | 4.0 | 1.54 (1.16 to 2.03)** |
| Attacks causing school absence in last year | 8.4 | 9.9 | 1.18 (1.01 to 1.39)* |
| Asthma diagnosis with attacks in last year | 7.8 | 13.8 | 1.76 (1.51 to 2.04)*** |
| Previous attacks but not in the last year | 8.0 | 13.5 | 1.69 (1.45 to 1.96)*** |
| Home interview data (morbidity) | |||
| Severe speech limiting attacks in last year | 1.20 | 2.70 | 2.25 (1.34 to 3.77)** |
| Waking at night in last year with wheeze | 7.56 | 10.25 | 1.36 (1.07 to 1.72)* |
| Atopic wheezing in the last year§ | 8.10 | 14.58 | 1.80 (1.46 to 2.22)*** |
| Non-atopic wheezing in the last year§ | 4.77 | 3.26 | 0.68 (0.47 to 1.00)* |
| Wheezing triggered only by colds | 1.28 | 1.62 | 1.27 (0.71 to 2.28) |
| Home interview data (medical service use) | |||
| Visited GP at surgery in last year for wheeze | 8.89 | 10.23 | 1.15 (0.91 to 1.45) |
| Outpatient attendance in last year for wheeze | 1.11 | 1.09 | 0.98 (0.49 to 1.94) |
| Casualty attendance in last year for wheeze | 0.98 | 1.62 | 1.66 (0.89 to 3.07) |
| Hospital admission in last year for wheeze | 0.47 | 0.27 | 0.58 (0.16 to 2.07) |