[R-meta] help

[Yalemzewod Gelaw]

Dear team,



As usual, I come today looking your help. Thank you for the metafor
package.

I am doing metareg for dealing with the source of heterogeneity. The
moderator (mean age) has missing values: 22 studies out of 68 didn’t report
the mean age of the study group. Whn I ran the model the error message
displayed as below;

3.6          35.4        28.4        32           37.6        39
1.05        31.75      NA          NA          NA          NA
NA
32           37.8                34.9        NA          30
30.5
29.8        35           30           24.8        32.7        35
NA          28.7        34.2        NA                34.9        28
28           31.3        NA          35           Na           35
NA          28.5        38.1        NA          NA          33.3
34.2        6.2          NA          25.5        33.4        32.6
29.5        NA          42           37.2        33.7        NA
  8.5
39.5                NA          NA          NA          NA          NA
26.6        35.2        NA          33.3        8.5          35

ress <- rma(yi,vi,mods = ~meanage_year, data = datz)

Warning message:

In rma(yi, vi, mods = ~meanage_year, data = datz) :

  Studies with NAs omitted from model fitting.

So, my question is what functions of metafor do help to impute this missing
values. I wonder if you can also provide examples done before.

*Sincerely, *


*Yalemzewod Assefa Gelaw  (Yalem)*

*Ph.D. Candidate, the University of Queensland, Australia *
*Email: yalassefa at gmail.com <http://yalassefa@gmail.com/y.gelaw@uq.edu.au>*


*"Change is good ... but it hurts "*

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