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Table 1 Lifetime prevalence of asthma by ISAAC written questionnaire

From: The prevalence of childhood asthma in China: a systematic review

Author, year Place of data collection Year of data collection Sample size Age group (years) Prevalence (%)
Leung R [14], 1997 Hong Kong 1994−1995 4665 13−14 11.0
Wong GW [15], 2004 Hong Kong 2002 3321 13−14 10.2
Lau YL [16], 1998 Hong Kong 1995 3618 6−7 7.8
Lee SL [17], 2004 Hong Kong 2001 4448 6−7 7.9
Wong GW [18], 2001 Hong Kong 1997−1998 3110 9−11 7.7
  Beijing   4227   6.4
  Guangzhou   3565   4.4
Chen YZ [19], 1998 Beijing 1994−1995 4167 13−14 6.9
  Guangzhou   3855   3.9
  Urumqi   3207   5.4
  Shanghai   3483   7.1
  Chongqing   4296   7.1
Zhao TB [20], 2000 Beijing 1995−1996 2978 6−7 10.7
  Urumqi   2840   7.6
Ma Y [21], 2009 Beijing 2003−2004 Urban 3531 13−14 6.3
    Rural 3546   1.1
Wang HY [22], 2006 Guangzhou 2001 3516 13−14 4.6
Yangzong [23], 2006 Tingri & Sakya (rural Tibet) 2004 2026 12−14 2.5
Droma Y [24], 2007 Lhasa (urban Tibet) 2001 3196 13−14 1.1