Statistical Analysis
All statistics were analysed using IBM SPSS Statistics 27.0 (IBM Corp.,
Armonk, NY, USA). Prevalence of drug allergy was calculated. Values were
presented as numbers (percentages) as appropriate. Age distributions of
drug allergy patients and individuals without drug allergy were compared
using the binomial test. Trends of incidence of reported drug allergy
were analysed using Spearman’s correlation. Two-sided p-values
<0.05 were considered statistically significant.