Table 3.
Summary of prevalence of asthma reported in the literature
| Authors | Data Collection Period |
Study & Survey Used | Definitions of Asthma | Sample Size | Countries Included | Age Groups | Findings of Asthma Prevalence |
|---|---|---|---|---|---|---|---|
| ECRHS (1996)5 | 1988-1994 | ECRHS | An asthma attack in the last 12 months or currently taking asthma medication |
137,619 | 12 | 20-44 | Ranged from 2.0% in Estonia to 11.9% in Australia with a median of 4.5% |
| ISAAC Steering Committee (1998)3 | 1992-1996 | ISAAC Phase 1 | Self-reported ever had asthma | 721,601 | 56 | 6-7 and 13-14 | 11.3% in children aged 13 14 years and 10.2% in children aged 6-7 years |
| ISAAC Steering Committee (1998)6 | 1992-1996 | ISAAC Phase 1 | Wheezing or whistling in the chest in the last 12 months | 463,801 | 55 | 13-14 | Ranged from 1.6% in Indonesia to 36.8% in the UK |
| Masoli et al. (2004)4 | 1988-1996 | ISAAC and ECRHS | Various depending on the survey and country | Not reported |
76 | 13-14 and 20-44 | Ranged from 0.7% in Macau to 18.4% in Scotland |
| Lai et al. (2009)18 | 2000-2003 | ISAAC Phase 3 | Wheeze in the past 12 months | 1,187,496 | 98 | 6-7 and 13-14 | 14.1% in children 13-14 years and 11.5% in children 6-7 years |
| Sembajwe et al. (2010)13 |
2002-2003 | WHS | Doctor diagnosis | 308,218 | 64 | 18-99 | Ranged from 1.8% in Vietnam to 32.8% in Australia with an overall 6.0% |
| To et al. (2011) (Current study) |
2002-2003 | WHS | Doctor diagnosis, clinical and symptoms of asthma | 177,496 | 70 | 18-45 | 4.3% doctor diagnosed asthma, 4.5% clinical asthma and 14.4% symptoms of asthma |