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0answers
136 views

Orwin's Fail safe N calculation - critical d value

I'm trying to calculate Orwin's fail safe n but cannot figure out all of the terms in his equation - specifically, how is the critical value of d calculated? Thank you
3
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1answer
160 views

What kind of cut-offs are used for publication bias tests in meta-analysis?

I have performed meta-analysis and included four different tests for publication bias in the analysis - classic fail-safe N, Orwin's fail-safe N, Duval and Tweedie's trim and fill as well as funnel ...
2
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1answer
330 views

Alternative Egger's test, without using standard error

A simplified regression equation $ES=\frac{a+b}{n_1+n_2}$ has been suggested as an alternative to Egger's regression equation $\frac{ES}{SE}=\frac{a+b}{SE}$, where ES=Effect Size, $n_1$=sample size of ...
6
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1answer
443 views

Alternative funnel plot, without using standard error (SE)

Before submission of my meta-analysis I want to make a funnel plot to test for heterogeneity and publication bias. I have the pooled effect size and the effect sizes from each study, that take values ...
2
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2answers
2k views

Egger's test in SPSS

How can I conduct an Egger's test using SPSS17? For each study included in the meta-analysis I know effect size and sample size of patients and controls groups.
2
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1answer
741 views

Orwin's fail safe N test

In Orwin's fail safe N test how to decide the values of criterion for a trivial log odd's ratio and mean log odds ratio in missing studies. I am a medical doctor. Please tell me in simple english. The ...
3
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2answers
2k views

Egger’s linear regression method intercept in meta analysis

In Meta analysis, how to interpret the Egger’s linear regression method intercept (B0) 10.34631, 95% confidence interval (1.05905, 19.63357), with t=3.54535, df=3. The 1-tailed p-value (recommended) ...