Cooking with Broccoli. Cooking methods can impact the nutrient content and health benefits of broccoli. Boiling can leach up to 90% of the valuable nutrients from broccoli, while steaming, roasting, stir-frying, and microwaving tends to preserve the nutrients. History of Broccoli
a meta analysis is a statistical analysis that combines the results of multiple scientific studies
1 Meta-regression is a tool used in meta-analysis to examine the impact of moderator variables on study effect size using regression-based techniques. 2  Meta-regression is more effective at this task than are standard regression techniques.