[R-meta] [R meta] How to print z score for subgroup analysis
Cath Kids
c@thk|d@|over @end|ng |rom gm@||@com
Mon May 20 00:05:29 CEST 2019
Dear all,
I have conducted a subgroup analysis using meta in R.
I used the following command but can't seem to find the z score in the
output.
> post_cb2_es.subgroup<-update.meta(post_cb2_es,
+ byvar=category,
+ comb.random = TRUE,
+ comb.fixed = FALSE,
+ print.zval = TRUE)
Could anyone please kindly advise? Thanks a lot!!!
Regards,
Joanne
============Analysis results========================
Number of studies combined: k = 18
SMD 95%-CI t p-value
Random effects model 0.2441 [ 0.0203; 0.4678] 2.30 0.0343
Prediction interval [-0.5915; 1.0797]
Quantifying heterogeneity:
tau^2 = 0.1441; H = 1.67 [1.30; 2.15]; I^2 = 64.1% [40.6%; 78.3%]
Quantifying residual heterogeneity:
H = 1.20 [1.00; 1.62]; I^2 = 30.2% [0.0%; 61.8%]
Test of heterogeneity:
Q d.f. p-value
47.38 17 0.0001
Results for subgroups (random effects model):
k SMD 95%-CI Q tau^2 I^2
category = CBM-A on IB 5 -0.1253 [-0.4858; 0.2351] 4.47 0.0465 10.5%
category = CBM-I on AB 7 0.1314 [-0.1120; 0.3747] 6.46 0.0306 7.1%
category = CBM-I on MB 6 0.6715 [ 0.2258; 1.1171] 10.58 0.1173 52.7%
Test for subgroup differences (random effects model):
Q d.f. p-value
Between groups 13.58 2 0.0011
Details on meta-analytical method:
- Inverse variance method
- Sidik-Jonkman estimator for tau^2
- Hartung-Knapp adjustment for random effects model
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