Table 1. Participants' baseline characteristics according to baseline body mass index and weight change since age 20.

	Total	Baseline body mass index, kg/m2						Weight change since age 20, kg
		<18.5	18.5 to <23.0	23.0 to <25.0	25.0 to <27.5	≥27.5	P for trend	<−5	−5 to <+5	≥+5	P for trend
Number at risk	33,801	4,085	15,488	7,259	4,737	2,232		11,259	11,648	10,894
Age*, years	58.1	63.5	57.3	57.1	58.0	57.9	<0.001	62.5	56.4	56.4	<0.001
Body mass index*, kg/m2	22.8	17.4	21.1	23.9	26.1	29.6	<0.001	21.8	21.8	24.9	<0.001
Weight change since 20 years old*, kg	2.6	−5.2	−0.5	4.6	8.4	14.4	<0.001	−9.3	−0.5	10.3	<0.001
Age at menarche*, years	15.0	15.4	15.0	14.9	14.8	14.8	<0.001	15.3	14.9	14.7	<0.001
Age at menopause*, years	49.2	48.7	49.3	49.3	49.4	49.1	<0.001	48.9	49.3	49.4	<0.001
Parity*	2.7	2.8	2.6	2.7	2.8	2.9	<0.001	2.9	2.6	2.6	0.100
History of hypertension, n (%)	7,261 (21.48)	770 (18.9)	2,587 (16.7)	1,629 (22.4)	1,426 (30.1)	849 (38.0)	<0.001	2,568 (22.8)	1,966 (16.9)	2,727 (25.0)	<0.001
History of diabetes, n (%)	1,329 (3.9)	163 (4.0)	54 (3.5)	280 (3.9)	192 (4.1)	146 (6.5)	0.002	526 (4.7)	370 (3.2)	433 (4.0)	0.031
Current smoking, n (%)	1,473	233 (6.8)	652 (4.7)	286 (4.3)	174 (4.0)	128 (6.4)	0.006	517 (5.3)	468 (4.4)	488 (4.9)	0.003
Current alcohol consumption, n (%)	7,360	686 (19.1)	3,485 (23.9)	1,682 (24.5)	1,043 (23.4)	464 (22.3)	0.354	2,029 (19.9)	2,646 (24.0)	2,685 (26.0)	<0.001
Television viewing time*, hours/day	2.9	3.0	2.8	2.9	3.0	3.3	<0.001	3.0	2.7	3.0	<0.001
Physical exercise, ≥5 hours/week, n (%)	1,230	141 (4.3)	577 (4.2)	262 (4.1)	183 (4.4)	67 (3.4)	0.912	410 (5.2)	449 (4.1)	371 (3.6)	0.440
Walking time, ≥1 hour/day, n (%)	13,803	1,583 (49.0)	6,649 (50.7)	2,934 (49.4)	1,847 (48.8)	790 (47.4)	0.030	3,977 (51.2)	5,267 (50.8)	4,559 (47.5)	<0.001
Activity at occupation, mostly sitting, n (%)	9,913	1,274 (45.1)	4,702 (40.4)	2,043 (38.9)	1,294 (39.3)	600 (40.3)	<0.001	2,836 (41.1)	5,390 (58.5)	3,487 (41.6)	0.021

^*: mean value.