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. Author manuscript; available in PMC: 2011 Oct 12.
Published in final edited form as: Cochrane Database Syst Rev. 2009 Oct 7;(4):CD006690. doi: 10.1002/14651858.CD006690.pub2
Item Authors’
judgement		 Support for judgement
Adequate sequence generation? Unclear Method not reported and unable to contact authors.
Allocation concealment? Unclear Method not reported and unable to contact authors.
Blinding? No No placebo so probably not blinded.
Incomplete outcome data
addressed?		 Yes No missing data. No withdrawals.
Free of selective reporting? Unclear No protocol provided. All expected and nominated outcomes
appropriately reported.
Free of other bias? Yes None identified.