Pool data for systematic review I am new to this website and to statistics as well. Currently I am writing a systematic review on complications and reoperations after distal radius fractures(Systematic review on the comparison of complications and reoperations after plaster casting, K-wire fixation, Kapandji intrafocal pinning, external fixation, dorsal plating, volar plating and intramedullary fixation of extra-articular distal radius fractures in adults). 
I collected all the data and got stuck on the statistics. I tried to look for it in books, Google and YouTube but couldn't find the necessary information.
How do I pool the data shown below? And secondly how do I compare the pooled data from different treatment modalities? Your help would be highly appreciated!!!!
Study   EF complications    EF total study population   Compl Rate
1   3                   23                          0,130434783
2   2                   20                          0,1
3   8                   30                          0,266666667
4   1                   16                          0,0625
5   31                  39                          0,794871795
6   26                  75                          0,346666667
7   22                  75                          0,293333333
8   0                   20                          0

Total   93                  298                         0,312080537

 A: You will need to set up your data-set with a column for treatment modality. You then need to decide on which transformation of the complication proportion you want to analyse, choices include: raw proportion, log transformed, logistic transformed, Freeman-Tukey arcsin transformed. When you get your software to do the transformation it should also give you the standard errors of those values. You then use inverse variance weighting to synthesise them In your case you also need to include treatment modality as a moderator so make sure your chosen software does meta-regression (which is what meta-analysis with one or more moderators is called. The moderator results will then tell you how much treatment modality affects the outcome.
One caution: I am assuming that each line in your final data-set comes from a separate study. If in fact you have a number of trials each of which compared two or more of the treatment modalities then you need something much more complicated to take account of that.
