Table 1

Prevalence of symptoms and morbidity associated with asthma in 8–11 year old Australian and Nigerian children

Australia (n = 654)Nigeria (n = 566)p value
Wheeze ever35.0 (31.4 to 38.7)15.0 (12.1 to 17.9)<0.001
Recent wheeze21.9 (18.7 to 25.1)10.2 (7.7 to 12.7)<0.001
Wheeze ⩾4 times in the last 12 months18.7 (15.7 to 21.7)5.3 (3.5 to 7.2)<0.001
Cough ever25.8 (22.5 to 29.2)10.8 (8.2 to 13.4)<0.001
Persistent cough9.6 (7.3 to 11.9)5.1 (3.3 to 6.9)<0.001
Early respiratory illness12.8 (9.2 to 15.4)7.2 (5.1 to 9.3)<0.01
Hayfever in the last 12 months28.4 (24.9 to 31.9)25.6 (19.3 to 26.5)NS
Morbidity associated with asthma in the last 12 months
 Limited activity ⩾ some days14.2 (11.1 to 17.3)5.5 (3.7 to 7.3)<0.001
 Sleep disturbed ⩾ some nights16.4 (13.4 to 19.4)7.8 (5.4 to 10.2)<0.001
 Missed school ⩾ some days12.5 (10.0 to 15.0)5.1 (3.3 to 6.9)<0.001
  • Figures are percentages with 95% confidence interval in parentheses.