Table 1

Changes of BMI for 1264 men and 1768 women after an average 3.6-year follow-up

Population*

N

follow-up (month)

BMI

BMI ≥ 25 kg/m2

mean ± SD

n (%)


Baseline

Follow-up

p

Baseline

Follow-up

p


Men

25–34 y

54

36

24.5 ± 3.4

24.8 ± 3.4

0.091

23(42.6)

24(44.4)

0.903

35–44 y

241

44

23.5 ± 3.2

23.9 ± 3.2

0.000

73(30.3)

85(35.3)

0.407

45–54 y

267

47

23.8 ± 3.1

23.9 ± 3.0

0.332

92(34.5)

97(36.3)

0.755

55–64 y

186

45

24.1 ± 3.0

24.1 ± 2.9

0.957

70(37.6)

68(36.6)

0.884

65–74 y

315

43

24.4 ± 3.1

24.1 ± 3.3

0.016

136(43.2)

136(43.2)

1.000

75–95 y

201

40

23.2 ± 3.5

22.8 ± 3.6

0.001

62(30.8)

62(30.8)

1.000

Women

25–34 y

51

35

22.1 ± 2.8

22.1 ± 2.7

0.755

9(17.6)

7(13.7)

0.642

35–44 y

421

44

23.4 ± 3.2

23.7 ± 3.2

0.000

119(28.3)

130(30.9)

0.540

45–54 y

443

47

24.1 ± 3.4

24.2 ± 3.4

0.329

168(37.9)

169(38.1)

1.000

55–64 y

247

48

25.1 ± 3.5

25.0 ± 3.6

0.209

122(49.4)

119(48.2)

0.874

65–74 y

386

45

25.0 ± 3.6

24.6 ± 3.6

0.000

196(50.8)

174(45.1)

0.347

75–94 y

220

42

24.3 ± 4.0

23.7 ± 4.2

0.000

97(44.1)

80(36.4)

0.280


*: age at baseline

Mean differences were assessed by the paired t-test.

Proportion differences were determined by the Chi-squared test.

Hou et al. BMC Public Health 2008 8:389   doi:10.1186/1471-2458-8-389

Open Data