Hello, I'm runnig a meta-analysis, correcting for clustering of standard errors with the robumetacommand. R gives the following warning: If df < 4, do not trust the results In some cases my df is in fact <4. What does this tell me then? Does it simply mean that the number of included studies is likely too small (often aroung 5-6, but with more than 10 single effect sizes)? Is there anything else I could do for these cases? Thank you [[alternative HTML version deleted]]