Table 3 Baseline characteristics of participating practices

Practice level

Control (n = 16)

Intervention (n = 12)

 Single handed

1

3

 Duo practice

0

0

 Group practice

15

9

 Rural area

6

3

 Urban area

10

9

 Deprivation score

24.7 (9.8)

26.2 (12.0)

 Practice list size

5968 (3543–13,390)

4065 (2191–7373)

Patient level

 Weight (kg)

[n = 20,955] 86.1 (17.9)

[n = 12,171] 87.0 (18.1)

 BMI (kg/m²)

[n = 8948] 30.2 (5.4)

[n = 4481] 30.5 (5.8)

 Waist circumference (cm)

[n = 1922] 98.5 (13.0)

[n = 818] 101.6 (18.0)

 Age

[n = 32079] 50.1 (18.6)

[n = 17728] 53.4 (17.8)

 Sex

  Male

32,538 (47.5 %)

17,675 (47.6 %)

  Female

35,969 (52.5 %)

19,476 (52.4 %)

 Ethnicity

  White

21,451 (65.6 %)

14,972 (72.9 %)

  South Asian

5474 (16.7 %)

2184 (10.6 %)

  Black

2055 (6.3 %)

1367 (6.7 %)

  Mixed

650 (2.0 %)

399 (1.9 %)

  Other

3060 (9.4 %)

1626 (7.9 %)

 Comorbidities

  Ischaemic heart disease

2226 (6.9 %)

1405 (7.9 %)

  Hypertension

8647 (27.0 %)

5205 (29.3 %)

  Disorder of lipid and lipoprotein metabolism

3315 (10.3 %)

1919 (10.8 %)

  Cerebrovascular disease

1315 (4.1 %)

857 (4.8 %)

  Diabetes

5371 (16.7 %)

3264 (18.4 %)

Highest BMI classification throughout the trial

 Number of patients with a BMI

35,686

19,847

 Number overweight or obese

32,079 (89.9 %)

17,728 (89.3 %)

 Overweight

17,136 (48.0 %)

8960 (45.1 %)

 Obese

14,943 (41.9 %)

8768 (44.2 %)