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Table 1 Characteristics of the non-overweight and overweight groups

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

Variables

Non-overweight (N = 3370) n(%)

Overweight (N = 656) n(%)

Pvaluea

Sex

 Boys

1705 (50.6)

382 (58.2)

<0.001

 Girls

1665 (49.4)

274 (41.8)

Age (years)

9.0 (9.36)b (n = 3370)

9.0 (9.37)b (n = 656)

0.607

Birth weight (g)

 <2500

348 (10.3)

53 (8.1)

<0.001

 2500-2999

1140 (33.8)

180 (27.4)

 3000-3499

1417 (42.1)

289 (44.1)

 3500-3999

427 (12.7)

114 (17.4)

 4000+

38 (1.1)

20 (3.1)

Exercise

 None

654 (19.9)

153 (24.1)

<0.001

 Sometimes

902 (27.5)

199 (31.3)

 Daily

1725 (52.6)

283 (44.6)

Skipping breakfast

 Yes

120 (3.6)

19 (2.9)

0.390

 No

3239 (96.4)

636 (97.1)

Eating speed

 Fast

481 (14.4)

215 (33.5)

<0.001

 Medium

1903 (57.1)

356 (55.5)

 Slow

947 (28.4)

71 (11.1)

Sleeping hours

 10.0+

491 (15.2)

83 (13.3)

0.075

 9.0-9.9

1963 (60.7)

363 (58.1)

 8.0-8.9

709 (21.9)

160 (25.6)

 <8.0

69 (2.1)

19 (3.0)

  1. aChi-squared test or Wilcoxon rank-sum test.
  2. bValues are median (mean).