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Fig. 4 | World Allergy Organization Journal

Fig. 4

From: Prevalence of food allergy in Vietnam: comparison of web-based with traditional paper-based survey

Fig. 4

Distribution of doctor-diagnosed FAs by geographical regions of Vietnam in this study. a Number of doctor-diagnosed FA (n = 94) by triggering food items in four geographical regions in the web-based survey. b Number of doctor-diagnosed FA (n = 401) by triggering food items in four geographical regions in the paper-based survey. c Prevalence of FA in four geographical regions (the South Central Coast, the Central Highlands, the South East and the Mekong Delta. Asterisk ‘*’ denote significant difference in the prevalence in the South East between survey modes (P < 0.001). z-test was used to compare the two population proportions. South East is the biggest metropolitan area in Vietnam

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