Table 5.
Multilevel logistic regression models for being absent at baseline but recorded at follow-up in intervention compared to control group
| CVD risk OR (95% CI) |
BMI OR (95% CI) |
Waist circumference OR (95% CI) |
Alcohol OR (95% CI) |
Blood pressure OR (95% CI) |
Smoking OR (95% CI) |
Cholesterol OR (95% CI) |
|
|---|---|---|---|---|---|---|---|
| Allocation | |||||||
| Control (reference) (n=8033) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Intervention (n=13 815) | 1.50 (1.04 to 2.18) | 1.28 (0.87 to 1.88) | 2.52 (1.30 to 4.91) | 2.19 (1.04 to 4.64) | 1.12 (0.79 to 1.58) | 2.24 (1.17 to 4.29) | 1.29 (0.88 to 1.91) |
| Patient age | |||||||
| <50-year (reference) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| 50–59-year | 1.15 (1.04 to 1.27) | 0.95 (0.53 to 1.70) | 0.68 (0.59 to 0.79) | 1.10 (0.97 to 1.25) | 0.85 (0.77 to 0.94) | 0.97 (0.85 to 1.11) | 1.22 (1.11 to 1.34) |
| >59 years | 1.13 (1.01 to 1.26) | 0.96 (0.85 to 1.08) | 0.78 (0.66 to 0.92) | 1.12 (0.97 to 1.29) | 0.55 (0.49 to 0.63) | 0.93 (0.80 to 1.08) | 1.08 (0.97 to 1.20) |
| Patient gender | |||||||
| Male (reference) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Female | 0.99 (0.99 to 1.09) | 0.96 (0.87 to 1.06) | 0.94 (0.82 to 1.07) | 0.98 (0.88 to 1.10) | 1.04 (0.95 to 1.15) | 0.93 (0.83 to 1.05) | 1.06 (0.98 to 1.15) |
| Number of general practitioners (GP) in practice | |||||||
| 1–3 GPs (reference) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| >3 GPs | 0.89 (0.58 to 1.37) | 1.16 (0.78 to 1.72) | 1.64 (0.75 to 3.59) | 1.95 (0.81 to 4.68) | 0.64 (0.43 to 0.96) | 1.06 (0.54 to 2.06) | 0.86 (0.54 to 1.35) |
| Number of practice nurses (PN) in practice | |||||||
| 1or less PN (reference) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| >1 PN | 1.51 (0.99 to 2.31) | 1.28 (0.87 to 1.88) | 1.32 (0.62 to 2.82) | 0.83 (0.36 to 1.96) | 1.61 (1.08 to 2.40) | 0.92 (0.48 to 1.76) | 1.35 (0.87 to 2.11) |
| Percentage of GPs/PNs working in primary care >10 years | |||||||
| 0 (reference) | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| >0 or more | 0.72 (0.37 to 1.40) | 1.02 (0.55 to 1.88) | 1.01 (0.30 to 3.36) | 0.90 (0.24 to 3.41) | 0.55 (0.30 to 1.03) | 0.41 (0.15 to 1.14) | 1.34 (0.67 to 2.71) |
| Between practice variance (SE) | 0.201 (0.062) | 0.159 (0.051) | 0.640 (0.197) | 0.869 (0.251) | 0.174 (0.054) | 0.482 (0.145) | 0.231 (0.069) |
| Percentage of Variance explained* | 14.8 | 32.3 | 46.9 | 33.1 | 11.7 | 0 | 37.2 |
Proportion of GPs/PNs working in primary care >10 years included as a continuous variable.
*Explained ‘between practice’ variance using the variance in the baseline model as reference. Bold indicates a statistically significant difference (p<0.05) in the OR for the independent variable compared with its reference variable.