1
library(metafor)
rma(yi = c(0.1, 0.3, 0.14, 0.3), vi = c(0.12, 0.2, 0.3, 0.1))
我在4個研究擬合單一比例的隨機效應薈萃分析模型。由於效應大小都是比例的,它們在0和1之間是有界的,置信區間也是如此。但是,實際輸出顯示爲R:比例的薈萃分析CI無界的正確
Random-Effects Model (k = 4; tau^2 estimator: REML)
tau^2 (estimated amount of total heterogeneity): 0 (SE = 0.1220)
tau (square root of estimated tau^2 value): 0
I^2 (total heterogeneity/total variability): 0.00%
H^2 (total variability/sampling variability): 1.00
Test for Heterogeneity:
Q(df = 3) = 0.2372, p-val = 0.9714
Model Results:
estimate se zval pval ci.lb ci.ub
0.2175 0.1936 1.1232 0.2614 -0.1620 0.5970
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Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
即即CI爲(-0.162,0.597)。我怎樣才能解決這個問題?