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Forest plots of Group 1 assessing the prevalence of beta-lactam allergy by A) Proportion of females with beta-lactam allergy out of the total study females, B) Proportion of females in the total study population, and C) Proportion of females with beta-lactam allergy out of the total population with beta-lactam allergy. CI, Confidence interval; DL, DerSimonian-Laird; HKSJ, Hartung-Knapp-Sidik-Jonkman; I2, I-squared statistic
