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Table 1 Inclusion criteria and derivation of the three analytic samples

From: Associations between local descriptive norms for overweight/obesity and insufficient fruit intake, individual-level diet, and 10-year change in body mass index and glycosylated haemoglobin in an Australian cohort

Criteria

n

Reason for reduced numbers

NWAHS sample (W1)

4056

–

Geocoded (W1)

4041

15 participants with invalid residential addresses

Residing in urban area (W1)

3887

154 participant addresses outside the urban area

Participated in Wave 2

3362

525 participants did not participate in Wave 2

Did not move (W1 to W2)

2797

565 participants moved between Waves 1 and 2

 

HbA 1c

BMI

Of participants meeting previous criteria (n = 2797):

CVD/diabetes free at Wave 1

2325

–

472 participants had CVD or Type 2 diabetes at Wave 1

Not obese at Wave 1 (BMI < 30)

–

1982

815 participants were obese at Wave 1

Covariate data (W1)

2261

1926

64 (HbA1c sample) and 56 (BMI sample) participants lacked covariate data at Wave 1

LDN: Overweight/obesity

1908

1630

353 (HbA1c sample) and 296 (BMI sample) participants lacked overweight/obesity norm data

LDN: Insufficient fruit intake

1966

1673

295 (HbA1c sample) and 253 (BMI sample) participants lacked local insufficient fruit intake norm data

  1. Abbreviations: BMI body mass index, CVD cardiovascular disease, HbA 1c glycosylated haemoglobin, LDN local descriptive norms, NWAHS North West Adelaide Health Study, W1, Wave 1; W2, Wave 2