Table 1 Measurements among participants in the RCT

I. Laboratory assessments

1.Fasting plasma glucose, Hb_A1c, insulin

Fasting venous blood sample

x

x

x

d

x

d

2.2-h Postload glucose

2-h postload glucose

b

x

x

x

3.Triglycerides, HDL, LDL, cholesterol, creatinine, hs-CRP

Fasting venous blood sample

x

x

x

4.Albumin and creatinine (urine)

Fasting urine sample

x

x

x

x

x

x

5.Blood sample storage (serum, EDTA)

Fasting venous blood sample

b

c

x

II.Anthropometry

6.Weight, height, blood pressure (Omron M5-1)

SOP: twice, blood pressure measured 5 times

x

x

x

x

x

x

7. Waist and hip circumferences, fat percentage (Omron 500)

SOP: twice

b

x

x

x

III. Behavior

8.PA (SQUASH [22] adapted to SA [23])

Questionnaire (interview)

x

x

x

x

x

9.Diet (based on guideline for healthful diet)

Questionnaire (interview)

x

x

x

x

x

x

10.Smoking [24]

Questionnaire (interview)

x

x

x

x

x

x

11.Alcohol [25]

Questionnaire (interview)

x

x

x

x

x

x

IV. Other measurements ^a

12.Ethnicity, household information

Questionnaire

x

13.Education, income, insurance, religion [26]

Questionnaire (interview)

education

x

x

x

x

x

14.Physical health (cardiovascular risk profile; [27])

Questionnaire (interview)

f

g

g

g

g

g

15.Cardio respiratory test (Chester STEP test; [28, 29])

SOP

x

x

x

16.Perceived quality of life (SF-15; [30, 31])

Questionnaire (interview)

x

x

x

x

x

17.Distress (part of 4DSQ; [32])

Questionnaire (interview)

x

x

x

x

x

18.Risk perception ([33] and our own questionnaire)

Questionnaire (interview)

x

x

x

x

x

x

19.Attitude, knowledge, social support, self-efficacy, and stages of change in PA and diet

Questionnaire (interview)

x

x

x

x

x

20.Perception of one’s own body

Questionnaire (interview)

x

x

x

x

x

V. Process

21.Dose received (participation in intervention components, frequency, leaflet, satisfaction)

Questionnaire (interview)

x

VI. Costs

1.Use of health care

Questionnaire (interview)

x

x

x

x

x

2.Costs of screening and lifestyle intervention

Questionnaire (interview)

h

x

x

x

x

x