Table 6.
Results of final stepwise models relative to number of trials per variable and statistical heterogeneity ranked by number of trials per variable in the final models
| Model | TPV | I2 | Large sample P value for the final model | Permutation P value for final model |
|---|---|---|---|---|
| Allium sativum TG: model 1 | 22 | 98.1% | 0.033 | 0.047 |
| Hypericum perforatum HAM-D: model 1 | 22 | 81% | 0.035 | 0.041 |
| Allium sativum HDL: model 2 | 9.5 | 45.8% | 0.003 | 0.003 |
| Allium sativum HDL: model 2 | 9.5 | 45.8% | < 0.001 | < 0.001 |
| Hypericum perforatum HAM-D: model 2 | 8 | 79% | 0.021 | 0.022 |
| Hypericum perforatumHAM-D: model 2 | 8 | 79% | 0.041 | 0.045 |
| Allium sativum TG: model 2 | 5.7 | 87% | 0.031 | 0.036 |
| Allium sativum TG: model 2 | 5.7 | 87% | 0.001 | 0.003 |
| Allium sativum TG: model 2 | 5.7 | 87% | 0.008 | 0.016 |
This table represents the final models for standard large sample techniques, the statistical heterogeneity in the final model, and number of trials included in the final model and the P values for both the standard large sample techniques compared to the permutation-based resampling P values. Model 1 refers to the stepwise model for methodological covariates. Model 2 refers to the stepwise model for the participant level and intervention level covariates.
HAM-D = Hamilton Depression Scale score; TG = triglyceride; TPV = number of trials per variable (TPV) in each model.