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Table 1 Participant characteristic by area and randomisation status

From: Randomised trial investigating the relationship of response rate for blood sample donation to site of biospecimen collection, fasting status and reminder letter: The 45 and Up Study

Wagga Wagga Randomised to:

Group 1 Dedicated clinic not fasting

Group 2 Dedicated clinic fasting

Group 3 Pathology centre not fasting no reminder

Total (N)

334

334

334

Age (mean [SD])

60.8 [9.7]

61.6 [10.5]

60.7 [10.3]

Sex (% male)

47.6

45.5

40.7

Distance from centre (mean km [SD])

5.0 [2.9]

5.0 [3.3]

5.2 [3.3]

Work status (% full time paid work)

31.1

29.6

33.2

Time since recruitment (% >1 year)

48.5

52.1

52.1

Education (% tertiary educated)

22.9

24.7

19.7

Carer status (% full time carer)

3.6

3.0

4.5

Disability (% major disability)

3.8

7.3

4.9

Physical function (% severe limitation)

11.8

14.5

14.7

Smoking (% current smokers)

7.5

5.5

6.6

BMI (% obese (BMI ≥ 30 kgm-2))

27.1

23.5

30.2

Parramatta Randomised to:

Group 1 Dedicated clinic not fasting

Group 2 Dedicated clinic fasting

Group 3 Pathology centre not fasting no reminder

Group 4 Pathology centre not fasting with reminder

Total (N)

334

334

334

336

Age (mean [SD])

64.2 [12.0]

63.1 [12.7]

64.1 [11.8]

63.5 [11.2]

Sex (% male)

47.6

49.7

50.6

49.4

Distance from centre (mean km [SD])

5.7 [2.4]

5.7 [2.6]

5.7 [2.5]

5.8 [2.5]

Work status (% full time paid work)

28.7

31.8

28.2

29.6

Time since recruitment (% >1 year)

53.1

47.7

54.2

55.1

Education (% tertiary educated)

28.3

25.7

25.6

23.1

Carer status (% full time carer)

3.3

4.5

5.1

4.2

Disability (% major disability)

10.5

5.9

4.0

6.6

Physical function (% severe limitation)

18.6

17.8

18.4

21.1

Smoking (% current smokers)

7.3

8.4

6.9

5.7

BMI (% obese (BMI ≥ 30 kgm-2))

24.9

22.5

21.8

22.3