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Table 1 Baseline characteristics of the study cohort

From: Association of midlife body-weight variability and cycles with earlier dementia onset: a nationwide cohort study

 

Total

(N = 3,635,988)

Non–dementia (N = 3,614,928)

Dementia

(N = 21,060)

Age, years

51.1 ± 6.54

51.10 ± 6.53

58.55 ± 4.65

Female (%)

1,223,013 (33.64)

1,212,809 (33.55)

10,204 (48.45)

BMI

24.01 ± 2.91

24.01 ± 2.91

23.96 ± 2.97

SBP

122.77 ± 14.09

122.76 ± 14.09

124.62 ± 15.18

DBP

77.24 ± 9.85

77.24 ± 9.85

77.44 ± 10.01

Total cholesterol

198.87 ± 35.91

198.87 ± 35.90

198.60 ± 38.55

eGFR

88.26 ± 14.63

88.28 ± 14.62

84.85 ± 14.84

Health–related behaviors

Smoking status (%)

   
 

Never smoker

1,887,224 (51.99)

1,873,761 (51.92)

13,463 (64.02)

Ex–smoker

806,122 (22.21)

802,752 (22.24)

3,370 (16.02)

Current Smoker

934,858 (25.81)

932,660 (25.84)

4,198 (19.96)

Alcohol intake (%)

   
 

None

1,674,203 (46.05)

1,661,091 (45.95)

13,112 (62.26)

< 10 g/day

924,726 (25.43)

921,090 (25.48)

3,636 (17.26)

10–19.9 g/day

478,530 (13.16)

476,781 (13.19)

1,749 (8.30)

20–39.9 g/day

411,834 (11.33)

410,172 (11.35)

1,662 (7.89)

≥ 40 g/day

146,695 (4.03)

145,794 (4.03)

901 (4.28)

Physical activity (METS) (%)

   
 

Low (< 600)

1,197,822 (32.94)

1,189,512 (32.91)

8,310 (39.46)

Moderate (600–3000)

1,993,797 (54.84)

1,983,758 (54.88)

10,039 (47.67)

High (≥ 3000)

444,369 (12.22)

441,658 (12.22)

2,711 (12.87)

Medical history (%)

HTN

2,030,032 (55.83)

2,015,379 (55.75)

14,653 (69.58)

DM

918,510 (25.26)

911,053 (25.20)

7,457 (35.41)

Heart disease

50,277 (1.38)

49,553 (1.37)

724 (3.44)

Stroke

17,692 (0.49)

17,224 (0.48)

468 (2.22)

Family history (%)

HTN

1,387,633 (38.16)

1,380,319 (38.18)

7,314 (34.73)

DM

930,071 (25.58)

925,056 (25.59)

5,015 (23.81)

Heart disease

476,735 (13.11)

474,388 (13.12)

2,347 (11.14)

Stroke

733,078 (20.16)

728,572 (20.15)

4,506 (21.40)