metacor.OP: Olkin-Pratt (OP) meta-analytical approach with correlation...

In metacor: Meta-Analysis of Correlation Coefficients

Description

Implements the Olkin-Pratt (DSL) fixed-effect meta-analytical approach with correlation coefficients as effect sizes, as described by Schulze (2004).

Usage

metacor.OP(r, n, labels, alpha = 0.05, plot = TRUE, xlim = c(-1, 1))

Arguments

r	vector of correlations
n	vector of sample sizes
labels	vector of the study names
alpha	alpha-level for the main test and for the confidence intervals
plot	logical; should a forest plot be returned?
xlim	range of the x-axis of the forest plot

Value

G	vector of the G-values
G.var	vector of the variances of each G
G.lower	the lower limits of the confidence intervals for G
G.upper	the upper limits of the confidence intervals for G
G.mean	the mean effect size G
G.se	the standard error of G.mean
G.mean.lower	the lower limit of the confidence interval for G.mean
G.mean.upper	the upper limit of the confidence interval for G.mean
p	the p-value for the null hypothesis H0 -> G.mean = 0

Author(s)

Etienne Laliberté [e-mail] http://www.elaliberte.info/

References

Schulze, R. (2004) Meta-analysis: a comparison of approaches. Hogrefe & Huber, Gottingen, Germany.

See Also

metacor.DSL

Examples

data(lui)
lui <- lui[order(lui$r.FDis),]
test <- metacor.OP(lui$r.FDis, lui$n, lui$label)
test

Example output

Loading required package: rmeta
Loading required package: gsl
$G
                New Zealand (TG)            Australia / NSW (STR) 
                   -4.325635e-01                    -4.252419e-01 
       Australia / Mungalli (TR)           Nicaragua / Rivas (TR) 
                   -3.835558e-01                    -3.737589e-01 
       Australia / Atherton (TR)        Nicaragua / Matiguas (TR) 
                   -3.296352e-01                    -1.383402e-01 
           Australia / QLD (STR)             Australia / NSW (TW) 
                   -1.166663e-01                    -1.083680e-01 
                   Portugal (TF)           Australia / Tully (TR) 
                   -4.595672e-02                     2.309846e-17 
    Costa Rica / Las Cruces (TR)             Canada / Quebec (TF) 
                    1.543085e-02                     2.466250e-02 
      Costa Rica / La Palma (TR)        USA / North Carolina (TF) 
                    4.068218e-02                     1.129982e-01 
                       Laos (TR)      China / Hainan montane (TR) 
                    1.355754e-01                     1.415798e-01 
     China / Hainan lowland (TR) Costa Rica / Puerto Jimenez (TR) 
                    1.726666e-01                     2.012604e-01 

$G.var
                New Zealand (TG)            Australia / NSW (STR) 
                     0.009628469                      0.003887747 
       Australia / Mungalli (TR)           Nicaragua / Rivas (TR) 
                     0.022363752                      0.019224286 
       Australia / Atherton (TR)        Nicaragua / Matiguas (TR) 
                     0.002551481                      0.025268306 
           Australia / QLD (STR)             Australia / NSW (TW) 
                     0.008606364                      0.002977194 
                   Portugal (TF)           Australia / Tully (TR) 
                     0.008583718                      0.013157895 
    Costa Rica / Las Cruces (TR)             Canada / Quebec (TF) 
                     0.003411334                      0.004232094 
      Costa Rica / La Palma (TR)        USA / North Carolina (TF) 
                     0.003484863                      0.044196002 
                       Laos (TR)      China / Hainan montane (TR) 
                     0.010465721                      0.029935562 
     China / Hainan lowland (TR) Costa Rica / Puerto Jimenez (TR) 
                     0.021336468                      0.003217302 

$G.lower
                New Zealand (TG)            Australia / NSW (STR) 
                    -0.240242516                     -0.303034624 
       Australia / Mungalli (TR)           Nicaragua / Rivas (TR) 
                    -0.090452655                     -0.102006613 
       Australia / Atherton (TR)        Nicaragua / Matiguas (TR) 
                    -0.230633137                      0.173215823 
           Australia / QLD (STR)             Australia / NSW (TW) 
                     0.065160519                     -0.001425162 
                   Portugal (TF)           Australia / Tully (TR) 
                     0.135630718                      0.224823288 
    Costa Rica / Las Cruces (TR)             Canada / Quebec (TF) 
                     0.129905733                      0.152167064 
      Costa Rica / La Palma (TR)        USA / North Carolina (TF) 
                     0.156384205                      0.525038413 
                       Laos (TR)      China / Hainan montane (TR) 
                     0.336083819                      0.480690713 
     China / Hainan lowland (TR) Costa Rica / Puerto Jimenez (TR) 
                     0.458958712                      0.312431997 

$G.upper
                New Zealand (TG)            Australia / NSW (STR) 
                     -0.62488453                      -0.54744919 
       Australia / Mungalli (TR)           Nicaragua / Rivas (TR) 
                     -0.67665887                      -0.64551118 
       Australia / Atherton (TR)        Nicaragua / Matiguas (TR) 
                     -0.42863727                      -0.44989622 
           Australia / QLD (STR)             Australia / NSW (TW) 
                     -0.29849313                      -0.21531081 
                   Portugal (TF)           Australia / Tully (TR) 
                     -0.22754417                      -0.22482329 
    Costa Rica / Las Cruces (TR)             Canada / Quebec (TF) 
                     -0.09904402                      -0.10284207 
      Costa Rica / La Palma (TR)        USA / North Carolina (TF) 
                     -0.07501985                      -0.29904198 
                       Laos (TR)      China / Hainan montane (TR) 
                     -0.06493306                      -0.19753116 
     China / Hainan lowland (TR) Costa Rica / Puerto Jimenez (TR) 
                     -0.11362547                       0.09008873 

$G.mean
[1] -0.07166779

$G.mean.se
[1] 0.01937352

$G.mean.lower
[1] -0.03369639

$G.mean.upper
[1] -0.1096392

$p
[1] 0.0001081122

metacor documentation built on Oct. 2, 2019, 5:03 p.m.