Example Queries

What are the indications for taking selenium?

	Outcome name	Results during intervention	Overall RoB judgment
Asfour et al. (2006): Effect of high-dose sodium selenite therapy on polymorphonuclear leukocyte apoptosis in non-Hodgkin's lymphoma patients	Ejection fraction	After chemotherapy (8 days): significantly better cardiac ejection fraction in sodium selenite arm (mean(SD)= 63(6%)) vs. control arm (69(6%)); p <0.05	high risk
Asfour et al. (2006): Effect of high-dose sodium selenite therapy on polymorphonuclear leukocyte apoptosis in non-Hodgkin's lymphoma patients	Toxicity	After chemotherapy (8 days): significant less infections in sodium selenite arm (20%) compared to control arm (67%); p<0.05	high risk
Büntzel et al. (2010): Limited effects of selenium in the prevention of radiation-associated toxicities - results of a randomized study in head neck cancer patients	Toxicity	Maximum toxicity intervention vs. control arm: dysphagia 22.7% vs. 35.3%, ageusia 22.7% vs. 47.1%, xerostomia 22.7% vs. 23.5%, and stomatitis 36.4% vs. 23.5%; no significant differences; Significant mean difference between arms only for dysphagia at week 7: mean intervention arm 1.533 vs. control 2.167 (p=0.05)	some concerns
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