Baseline characteristics of study population.

aHigh-strength medication consists of those using potent or very potent steroids, or mild or moderate calcineurin inhibitors. Low-strength medication consists of those using mild or moderate steroids only.bThere were eight missing values for the food allergy variable.cThere was one missing value for SASSAD at baseline as the patient was randomised on the strength of a partial SASSAD score that excluded the child's legs.dThere were four missing values for the washing powder variable.eThere were three missing values for the fabric softener variable.fThere was one missing value for the bathing at home frequency variable.gThere were 12 missing values for the bathing away from home variable.hThere was one missing value for the swimming frequency variable.IQR, interquartile range.