Table 1 Multi-level meta-analyses of variance ratios.

From: Meta-analysis of variance in tDCS effects on response inhibition

Null model

CVR

p

AIC

BIC

 

1

0.975

42.89

52.76

Moderator variable

QM

p

AIC

BIC

Task

0.01

0.929

45.28

57.56

Polarity

0.30

0.586

45.13

57.40

Target location

4.77

0.445

49.65

71.31

Return electrode

1.25

0.741

48.02

65.04

Timing

1.46

0.227

43.80

56.07

Current density

0.11

0.747

45.63

57.90

Duration

3.57

0.059

41.85

54.12

Blinding

0.44

0.933

50.94

67.95

  1. Number of studies = 53, number of effects = 88, CVR = coefficient of variation ratio (lnCVR was exponentiated by e), QM = Moderator test, AIC = Akaikes information criterion, BIC = Bayesian information criterion.
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