Dietary advice v control for mean percentage change in the blood total cholesterol concentration at up to 5 years follow up
| Study group | Weighted mean reduction (95% CI) |
|---|---|
| AHA=American Heart Association. | |
| *Heterogeneity existed among trials. | |
| All studies* | 5.7% (5.2 to 6.3) |
| AHA step 1 diets | 3.0% (1.8 to 4.1) |
| AHA step 2 diets* | 5.6% (4.7 to 6.5) |
| Change in fat ratio diets* | 7.6% (6.2 to 9.0) |
| Reduction in total fat diets | 5.8% (3.8 to 7.8) |








