I am performing some meta-analysis and I came around some paper which says " The results of a meta-analysis of 72 studies encompassing 33,732 observations... etc" or "We conducted a meta-analysis of 52 empirical studies representing 10,066 observations to test relationships" What does this observations mean in the context of meta-analysis.
The below table was given as an hint for my work from my advisor, although I could not understand what it does imply. How can I make observations with three factors in multiple ways?
The below table is the example I have been trying. [![This is the example I have been doing]]
So comparing my work to the above given example I have two doubts. 1) 1 denotes presence and 0 denotes does not presence according to the 1st image.
2) Regarding sample size, its 175 for one study, and I read that in case I use the sample size for calculations as an estimate for the std err (i.e. precision) of the estimator (i.e. the effect size respective the correlation),I need to account for the fact, that the std error are not independent and I need to adjust the estimator for the precision of the estimator. If the sample size is 175 and you have 8 entries from the same study here database, so I have to devise the sample size by the number of entries... i.e 175/23 = 7.6