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Code.R [7] | 1.28 KB |
Hi Mike,
Thank you so much answering all these questions on this forum. I was able to solve a lot of practical problems I ran into in my study.
But I am not sure how to solve this one properly: (code and data attached)
I successfully ran the tssem1 with my data, and was informed the Cov is not positive definite in the second stage.
I am a little bit confused as the result for tssem1 looks normal.
Why am I getting this error? Is it because I have too many missing values in the dataset?
If that is the case, should I try to combine variables and investigate at a higher level, or should I drop studies with too many missing values (e.g., studies reporting only 1 correlation) to reduce the missing value rate?
Please help.
Thank you in advance.