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. 2021 Oct 30;398(10311):1569–1580. doi: 10.1016/S0140-6736(21)01450-1

Table 3.

12-month prevalence of asthma symptoms and absolute change per decade for the 6–7-years age group in each study centre

Wheeze in past 12 months
Asthma ever
Severe asthma symptoms in past 12 months
Exercise wheeze in past 12 months
Night cough in past 12 months
Number of individuals* Prevalence, %* Absolute change per decade, % SE change Prevalence, %* Absolute change per decade, % SE change Prevalence, %* Absolute change per decade, % SE change Prevalence, %* Absolute change per decade, % SE change Prevalence, %* Absolute change per decade, % SE change
Africa and Eastern Mediterranean
Syria (Lattakia) 1116 10·8% 3·8% 5·1 11·9% 4·9% 5·2 5·4% 1·7% 3·2 11·6% 5·5% 6·7 29·1% 8·6% 4·4%
Region total 1116 10·8% 3·8% NA 11·9% 4·9% NA 5·4% 1·7% NA 11·6% 5·5% NA 29·1% 8·6% NA
Americas
Costa Rica (Costa Rica) 1936 23·2% −9·0% −7·5 29·3% 0·9% 0·6 13·2% −3·2% −4·1 12·2% −3·0% −3·5 45·9% 5·6% 5·5%
Mexico (Ciudad Victoria) 2444 11·7% 2·4% 3·9 6·5% 1·4% 2·5 5·8% 1·8% 4·4 10·0% 4·5% 7·1 22·7% −4·6% −4·3%
Mexico (Mexicali) 2001 14·0% 3·9% 5·7 7·5% −0·2% −0·4 7·6% 3·3% 5·9 14·8% 7·0% 10·3 23·0% −3·4% −2·8%
Mexico (Mexico City [North Area]) 2515 10·6% 2·8% 4·2 5·1% 0·5% 1·0 4·3% 1·5% 4·1 9·1% 4·2% 7·5 19·8% −7·9% −5·6%
Mexico (Toluca Urban Area) 2712 6·4% 0·4% 0·4 3·4% 1·0% 2·6 2·9% 0·7% 1·4 6·5% 2·2% 3·2 18·0% −0·6% −0·5%
Nicaragua (Managua) 3162 12·2% −3·0% −3·0 14·0% −1·8% −1·9 5·9% −2·1% −3·2 7·9% −4·9% −5·9 32·5% −7·2% −3·7%
Region total 14 770 12·5% −1·5% NA 10·4% −0·4% NA 6·3% −0·3% NA 9·7% 0·8% NA 26·5% −3·4% NA
Europe
Spain (A Coruña) 3407 11·0% −1·3% −2·3 9·7% −2·6% −4·5 4·4% −0·2% −0·4 4·9% −0·8% −2·0 30·9% 4·8% 5·1%
Spain (Bilbao) 2707 10·9% −0·9% −1·4 22·7% 1·2% 1·4 4·1% 0·2% 0·4 6·4% −0·1% −0·3 27·8% 4·2% 5·0%
Spain (Cartagena) 3509 11·7% 0·5% 0·9 10·3% −0·3% −0·6 4·4% 0·2% 0·4 6·1% 0·7% 1·7 27·4% 4·7% 5·6%
Region total 9623 11·2% −0·6% NA 13·6% −1·1% NA 4·3% 0·1% NA 5·7% −0·1% NA 28·7% 4·6% NA
South-East Asia and Western Pacific
India (Jaipur) 2296 2·4% −2·0% −2·1 2·2% −2·2% −2·3 0·8% −1·7% −2·0 2·5% −0·6% −0·5 19·9% −2·9% −2·3%
India (Kottayam) 2099 5·5% −11·3% −13·4 3·5% −5·2% −3·7 2·9% −5·3% −4·8 1·8% −7·1% −6·2 20·9% −0·3% −0·2%
India (Lucknow) 2969 1·1% −1·5% −3·3 0·6% −1·1% −3·7 0·5% −0·6% −2·7 1·9% 0·2% 0·6 6·7% −5·7% −5·0%
India (New Delhi) 2516 3·5% −1·6% −2·6 0·4% −3·9% −5·7 0·8% −1·1% −5·8 2·7% −0·2% −0·6 22·9% 9·8% 7·8%
India (Pune) 2404 2·1% −1·2% −3·4 1·8% −1·0% −3·6 0·7% 0·4% 4·1 4·4% 0·8% 1·7 19·8% 5·0% 5·3%
New Zealand (Auckland) 1538 17·4% −3·1% −3·6 19·2% −5·5% −4·5 6·7% −2·0% −3·4 12·0% −2·1% −2·3 24·8% −2·7% −2·7%
Taiwan (Taipei) 3036 13·6% 2·4% 4·2 14·5% 0·1% 0·2 3·7% 1·0% 3·7 6·9% 1·3% 3·8 32·8% 7·4% 14·7%
Thailand (Bangkok) 3067 14·6% −0·2% −0·3 6·1% −2·9% −4·2 6·8% 0·9% 1·9 3·0% −1·7% −3·6 24·2% −4·2% −5·1%
Region total 19 925 7·4% −2·5% NA 5·6% −3·4% NA 2·8% −1·0% NA 4·1% −1·3% NA 21·4% 0·5% NA
World total 45 434 9·9% −1·5% NA 9·0% −1·6% NA 4·3% −0·5% NA 6·4% −0·2% NA 24·8% 0·5% NA

The Chandigarh centre is not presented because its ISAAC data are from Phase I alone. NA=not applicable. Methodology notes for centres with GAN Phase I data alone are the following: response rate lower than 70% (Costa Rica, Bilbao, Cartagena, Kottayam, Auckland); no date of birth on the questionnaire (Taipei); no age on the questionnaire (New Delhi); fewer than ten schools used when ten or more schools were available (Bangkok); and more than 20% of questionnaires missing age and date of birth (Bangkok). GAN=Global Asthma Network. ISAAC=International Study of Asthma and Allergies in Childhood.

*

GAN Phase I.

ISAAC Phase III to GAN Phase I.