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Table 4 Adjusted odds ratios of number of younger/older siblings for overweight

From: Number of siblings, birth order, and childhood overweight: a population-based cross-sectional study in Japan

Variables

Total N

Overweight n (%)

AOR (95% CI)

Number of younger siblings

 0 (Only child)

423

95 (22.5)

1.00

 1 (Oldest child)

1190

173 (14.5)

0.50 (0.36-0.70)

 2 or more (Oldest child)

427

57 (13.4)

0.33 (0.21-0.51)

   

P for trend <0.001

Number of older siblings

 0 (Only child)

423

95 (22.5)

1.00

 1 (Youngest child)

1025

187 (18.2)

0.73 (0.53-1.01)

 2 or more (Youngest child)

452

74 (16.4)

0.70 (0.47-1.05)

   

P for trend = 0.078

  1. AOR: adjusted odds ratio, CI: confidence interval.
  2. Adjusted for sex, birth weight, eating speed, exercise, sleeping hours, mother’s age, paternal overweight, and maternal overweight.