The criteria were established by the researchers, and each

送交者: blackbox 于 2007-03-06, 15:08:01:

回答: 这里什么叫高偏差低偏差? 由 HunHunSheng 于 2007-03-06, 14:46:43:

study was reviewed and scored based on these criteria. This kind of approach is called "Systematic Review"

ZT:
"Randomization, blinding, and follow-up were considered markers of bias in the included trials."