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Table 3 Summary of the results of the regression model

From: An investigation of the constancy of effect in Cochrane systematic reviews in context with the assumptions for noninferiority trials

 

B

95%CI

P value

(Constant)

36.14

[15.20; 57.08]

0.001

SMDdl

0.88

[0.76; 1.01]

 < 0.001

Year difference

-0.009

[-0.013; -0.004]

 < 0.001

Year of future trial

-0.018

[-0.028; -0.007]

0.001

  1. Weighted Least Squares Regression—Weighted by sample size of the historical meta-analysis
  2. Dependent Variable: Standardized mean difference future trial, Year difference = year difference between latest trial and the oldest trial, SMDdl = Standardized mean difference of historical trials
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BMC Medical Research Methodology

ISSN: 1471-2288

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