Table 4.
Results of patient-level GEE analyses
| Control | Intervention | Odds ratio | |||
|---|---|---|---|---|---|
| (n = 32079; 16 practices) | (n = 17728; 12 practices) | ICC | OR (95 % CI) | p value | |
| Primary outcome | |||||
| Weight management | 15.1 % (10.8 %) | 13.2 % (5.9 %) | 0.094 | 1.17 (0.72, 1.89) | 0.53 |
| Secondary outcomes | |||||
| BMI or waist circumference measureda | 42.7 % (10.3 %) | 39.6 % (10.6 %) | 0.031 | 1.15 (0.89, 1.48) | 0.28 |
| Referral to external weight loss services | 5.1 % (3.4 %) | 3.7 % (3.4 %) | 0.026 | 1.45 (0.81, 2.63) | 0.21 |
| Internal weight management | 9.6 % (9.1 %) | 8.7 % (6.7 %) | 0.123 | 1.09 (0.55, 2.15) | 0.81 |
| Lifestyle assessment | 23.1 % (7.6 %) | 23.9 % (6.1 %) | 0.025 | 0.98 (0.76, 1.26) | 0.88 |
| Weight loss of at least 1 kgb | 42.2 % (4.1 %) | 41.7 % (4.1 %) | 0.003 | 0.98 (0.87, 1.09) | 0.67 |
| Mean difference | |||||
| Mean (95 % CI) | p-value | ||||
| BMIc | 30.4 (0.9) | 30.5 (1.1) | 0.000 | 0.08 (−0.12, 0.28) | 0.43 |
| Weightb | 85.3 (3.2) | 87.5 (1.2) | 0.002 | 0.05 (−0.32, 0.41) | 0.81 |
An odds ratio <1 favours the intervention group. A mean difference >0 favours the intervention group. xx.x% (xx.x%) = mean (SD)
aControl (n = 20955), intervention (n = 12171)
bControl (n = 9769), intervention (n = 5784)
cControl (n = 2440), intervention (n = 1243)