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Table 3 Descriptive statistics of 9 individual cohort studies included in the meta-analysis, n = 119,396 participants

From: Independent and combined effects of physical activity and body mass index on the development of Type 2 Diabetes – a meta-analysis of 9 prospective cohort studies

 

Cohort

Country

N

Mean age

% male

Mean time to T2D event (Years)

% Incident cases T2D (Absolute number)

PA categories % (Absolute number)

BMI categories % (Absolute number)

Mean BMI

1

Australian Longitudinal Study on Women’s Health (ALSWH) [18]

Australia

9599

49.6

0 %

4.9

4.6 % (441)

Low = 17.7 % (1695)

underweight = 1.6 % (140)

26.2

Med = 25.8 % (2474)

normal weight = 47.8 % (4592)

High = 56.6 % (5430)

mod overweight = 31.6 % (3036)

 

obese = 19.1 % (1831)

2

The Australian Diabetes, Obesity and Lifestyle study (AusDiab) [24]

Australia

4327

47.1

46 %

4.3

3.0 % (130)

Low = 39.6 % (1712)

underweight = 0.8 % (35)

26.5

Med = 57.8 % (2503)

normal weight = 40.4 % (1748)

High = 2.6 % (112)

mod overweight = 39.5 % (1709)

obese = 19.3 % (835)

3

British Regional Heart Study (BRHS) [16]

United Kingdom

4720

49.3

100 %

7.0

1.7 % (82)

Low = 31.3 % (2547)

underweight = 0.4 % (19)

25.4

Med = 14.8 % (698)

normal weight = 46.4 % (2188)

High = 54.0 % (2547)

mod overweight = 46.3 % (2184)

obese = 7.0 % (329)

4

Caerphilly Prospective Study (CaPS) [17]

United Kingdom

2034

56.6

100 %

4.7

4.9 % (99)

Low = 0 % (0)

underweight = 1.2 % (25)

26.4

Med = 18.6 % (378)

normal weight = 32.5 % (660)

High = 81.4 % (1656)

mod overweight = 52.4 % (1065)

obese = 14.0 % (284)

5

Cancer prevention study-II Nutrition Cohort (CPS-II)

United States

86368

58.7

42 %

6.3

11.5 % (9948)

Low = 1.3 % (1119)

underweight = 1.1 % (969)

26.1

Med = 30.3 % (26166)

normal weight = 43.8 % (37851)

High = 68.4 % (59083)

mod overweight = 39.5 % (34123)

obese = 15.5 % (13425)

6

Doetinchem Cohort Study [25]

The Netherlands

3401

46.7

44 %

5.6

2.0 % (67)

Low =0.7 % (24)

underweight = 0.8 % (27)

25.6

Med = 2.1 % (71)

normal weight = 47.2 % (1605)

High = 97 % (3306)

mod overweight = 40.7 % (1383)

obese = 11.4 % (386)

7

Kuopio Ischaemic Heart Disease Risk Factor Study (KIHD)

Finland

1087

51.7

100 %

4.2

5.1 % (55)

Low = 0.6 % (6)

underweight = 0.1 % (1)

26.8

Med = 11.4 % (124)

normal weight = 34.4 % (374)

High = 88 % (957)

mod overweight = 50.4 % (548)

obese = 15.1 % (164)

8

Physical Activity Longitudinal Study (PALS) [19]

Canada

1487

41.0

48 %

8.8

2.2 % (32)

Low = 2.1 % (31)

underweight = 2.2 % (32)

25.2

Med = 30 % (446)

normal weight = 50.7 % (754)

High = 67.9 % (1010)

mod overweight = 36.3 % (540)

obese = 10.8 % (161)

9

Whitehall-II study (WH-II) [26]

United Kingdom

4855

49.1

70 %

8.5

7.9 % (383)

Low = 0 % (0)

underweight = 0.95 (46)

25.3

Med = 10 % (508)

normal weight = 51.99 (2524)

High = 89.5 % (4347)

mod overweight = 38.00 (1845)

obese = 9.06 (440)