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.