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Table 1 Demographic features of adult participants in the two survey modes

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

  Web-based survey Paper-based survey Difference, P value
Number of respondent, n 1854 9039  
Sex distributiona, n (%)
 Male 711 (38.3) 2955 (32.7) < 0.001
 Female 1143 (61.7) 6084 (67.3)  
Age b (years), median (minimum-maximum) 21.0 (16–47) 20.0 (18–50) < 0.001
  1. a One Sample t Test was performed in SPSS Statistics 24.0 (IBM Corp., Armonk, N.Y., USA) to obtain P values
  2. b The Independent samples t Test was performed in SPSS Statistics 24.0 (IBM Corp., Armonk, N.Y., USA) to obtain P value