47 Potential small study bias or publication bias (that is, the likelihood of small yet nominally significant studies being published selectively) was examined by visual inspection of constructed funnel plots and analytically using Egger’s test. 48 Egger’s method plots linearly the standard normal deviate (natural logarithm of relative risk/standard error (SE) of relative risk) and precision (1/SE of relative risk) as independent variables, with test results based on the P value of the regression constant.
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Efficacy and safety of enoxaparin versus unfractionated heparin during percutaneous coronary intervention: systematic review and meta-analysis.
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