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Table 1 Distribution of selected characteristics in 612 children

From: Season of birth is associated with increased risk of atopic dermatitis in Japanese infants: a retrospective cohort study

Variable

No. (%) or mean ± SD

Male sex

269 (44.0)

Birthweight, g, mean ± SD

3067.0 ± 394.1

Older siblings

 0

323 (52.8)

 ≥ 1

289 (47.2)

Cesarean birth

58 (9.5)

Use of emollient at 1 month of age

76 (12.4)

Atopic dermatitis at 1 month of age

106 (17.3)

Season of birth

 Spring

158 (25.8)

 Summer

143 (23.4)

 Autumn

159 (26.0)

 Winter

152 (24.8)

  1. SD standard deviation