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Table 1 Description of study sample (n = 22,213)

From: Sustained adherence to a Mediterranean diet and physical activity on all-cause mortality in the Melbourne Collaborative Cohort Study: application of the g-formula

Characteristics of participants

at baseline a

 

Women

(n = 13,980)

Men

(n = 8233)

Nmissb

N

%

N

%

Age (years; Median, IQR)

 

58.3

(50.7, 66.3)

57.3

(50, 65.9)

Education:

 Primary school

 

4,65

3.3%

224

2.7%

 Some high school

 

6906

49.4%

2636

32%

 Completed high school

 

2962

21.2%

2278

27.7%

 Completed tertiary

 

3647

26.1%

3095

37.6%

Alcohol consumptionc:

 Lifetime abstainer

 

4228

30.2%

982

11.9%

 Former drinker

 

438

3.1%

354

4.3%

 Low (women: < 20 g/d, men: > 40 g/d)

 

7391

52.9%

5654

68.7%

 Medium (women: 20-40 g/d, men: 40-60 g/d)

 

1489

10.7%

718

8.7%

 High (women: 40 + g/d, men: 60 + g/d)

 

434

3.1%

525

6.4%

 SBP > 140 or DBP > 90

37

4314

30.9%

3224

39.2%

Self-reported history of:

 Angina

21

336

2.4%

188

2.3%

 Asthma

67

2382

17.1%

1193

14.5%

 Arthritisc

 

4675

33.4%

1677

20.4%

 Family history of heart attack

 

6004

42.9%

3154

38.3%

 Cholesterol (mmol/L; median (IQR))c

57

5.4

(4.8, 6.2)

5.4

(4.7, 6.0)

 Living alone

249

2968

21.5%

1092

13.4%

 BMI (kg/m2; median (IQR))

1513

24.7

(22.4, 27.7)

25.9

(24, 28.1)

Smoking:

19

 

 Never

 

9155

65.6%

4063

49.4%

 Former

 

3903

27.9%

3556

43.2%

 Current

 

908

6.5%

609

7.4%

Mediterranean Diet scored:

2504

 

 Low (0–3)

 

4095

33.1%

3157

42.9%

 Medium (4–5)

 

5158

41.7%

2936

39.9%

 High (6–9)

 

3105

25.1%

1258

17.1%

Physical activitye:

388

 

 Low

 

5073

37.0%

2661

32.8%

 Medium

 

6310

46.0%

3348

41.2%

 High

 

2324

17.0%

2109

26.0%

  1. a Study baseline is T1 (1995–1999); b Number of missing values; c Measured at T0 (1990–1994). IQR – inter-quartile range (i.e. 25th – 75th percentile). dMDS groups: low (scores 0–3), medium (4–5) and high (6–9); ePhysical activity groups: low (e.g. walking twice a week or less), medium (e.g. jogging twice a week), high (e.g. running three or more times a week)