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Multivariable logistic regression was used with adjusted odds ratios (ORs) and 95% CIs (error bars). The approximate E value for unmeasured confounding was 2.9 for the point estimate and 1.9 to 4.1 for the 95% CI.
aIndicates compared with no allergy.
bIncludes allergies to allergens with cross-reactivity to pollen.
