[R-meta] metagen / low heterogeneity

[Guido Schwarzer]

Sean,

The confidence intervals for tau2 and tau are certainly wrong / meaningless.

I could have a closer look if you send me (part of) your data set with 
these strange CIs.

Best wishes
Guido

P.S. Internally, meta calls rma.uni() and confint() from R package 
metafor to calculate the confidence intervals for tau2 and tau. I do not 
assume that there is a problem in the computations in metafor.