By vgreene, 7 January, 2015 L:Low-evidence quality—further research very likely to affect future recommendations
By vgreene, 7 January, 2015 M:Moderate-evidence quality—further research likely to affect future recommendations
By vgreene, 7 January, 2015 H:High-evidence quality—further research unlikely to alter confidence about efficacy
By vgreene, 7 January, 2015 C:Conditional recommendation—some uncertainly remains about benefit/harm balance
By vgreene, 7 January, 2015 S:Strong recommendation—benefits clearly outweigh negatives/result of no action