Table 2 Sequential logistic regression analysis of variables predicting “Orthodox/Unorthodox” variable (n = 459); X 2 (where applicable) directly compares the model through a likelihood ratio test with the previous model
| Â | Â | Wald 95% confidence limits on OR | Â | Â | Â | |
|---|---|---|---|---|---|---|
Model number and predictors | Odds-ratio (P value) | Lower | Upper | Model AIC | Log likelihood | Likelihood ratio χ2(P value) (df = 1) |
Model 1.1 | ||||||
Non-evidence-based treatment choices (1/0) | 9.00 (<0.0001) | 5.02 | 16.15 | 377.0 | -186.50 | Â |
Model 1.2 | ||||||
Non-guidelines-based x-ray use (1/0) | 6.10 (<0.0001) | 3.62 | 10.27 | 394.6 | -195.30 | Â |
Model 1.3 | ||||||
Negative vaccination attitude (3–15) | 1.55 (<0.0001) | 1.40 | 1.72 | 353.1 | -174.56 |  |
Model 2.1 | ||||||
Negative vaccination attitude (3–15) | 1.44 (<0.0001) | 1.30 | 1.60 | 323.9 | -158.95 | 31.2 (<0.0001) |
Non-evidence-based treatment choices (1/0) | 5.37 (<0.0001) | 2.87 | 10.04 | |||
Model 2.2 | ||||||
Negative vaccination attitude (3–15) | 1.41 (<0.0001) | 1.27 | 1.57 | 312.5 | -152.23 | 13.4 (<0.0002) |
Non-evidence-based treatment choices (1/0) | 4.18 (<0.0001) | 2.19 | 7.98 | |||
Non-guidelines-based x-ray use (1/0) | 2.99 (<0.0001) | 1.65 | 5.42 | |||