Table 2 Characteristics of the sample, men and women.

From: The association between BMI and mortality using early adulthood BMI as an instrumental variable for midlife BMI

 

Men

N = 116 777

Women

N = 32 109

Birth year, min max

1943–1963

1943–1962

Examination year, min max

1985–2003

1985–2003

Age by examination, mean (SD)

41.4 (1.3)

41.7 (1.4)

BMI in midlife (40–50 years), mean (SD)

26.0 (3.3)

24.3 (3.9)

BMI in early adulthood (18–20 years), mean (SD)

21.6 (2.3)

21.8 (2.7)

Weight category, early adulthood, n (%)

   Underweight

6576 (6)

2253 (7)

   Normal weight

102 017 (87)

26 342 (82)

   Overweight

7496 (6)

3192 (10)

   Obesity

694 (1)

322 (1)

Weight category, midlife, n (%)

   Underweight

269 (0)

556 (2)

   Normal weight

47 984 (41)

20 621 (64)

   Overweight

56 082 (48)

8314 (26)

   Obesity

12 442 (11)

2618 (8)

Education, n (%)

   ≤9 years

15 217 (13)

6145 (19)

   10–11 years

34 873 (30)

14 593 (45)

   12 years

36 381 (31)

4632 (14)

   13–15 years

21 484 (18)

6132 (19)

   ≥16 years

8822 (8)

607 (2)

CVD mortality, n (%)

1473 (1)

199 (0)

All-cause mortality, n (%)

5829 (5)

1709 (5)

Age at death, mean (SD), min max

54.1 (6.0) 39–68

56.1 (6.3) 40–68

Age at CVD death, mean (SD), min max

54.0 (6.0) 39–68

56.5 (6.3) 41–68

Midlife risk factors

Blood pressure (mmHg)

   Systolic, mean (SD)

135 (13)

127 (14)

   Diastolic, mean (SD)

80 (10)

78 (10)

Heart rate (beats/min), mean (SD)

72 (12)

78 (13)

Cholesterol (mmol/L), mean (SD)

5.8 (1.1)

5.5 (1.0)

Height (cm), mean (SD)

179.3 (6.4)

165.8 (5.7)

Daily smoking, n (%)

44 459 (38)

13 074 (41)

  1. BMI: Body Mass Index CVD: Cardiovascular Disease.