Does repeated tapping (Sampling) increase the risk of infection(Neurosurgery) Meta-Analysis:

Using An Excel sheet for the analysis of result using Spss include the following:
– 1) relation between rate of infection and frequancy of sampling and the percentage
– 2) relation between repeated tapping vs non tapping and rate of infection with the percentage
– 3) the device type and rate of infection with the percentage
– 4) the device or shunt Duration and rate of infection with the percentage
– *It should contain confidence interval and risk ratio.
– *Write a paragraph about each result.