id  Study  Lib. in paper  Exposition period  Study type 
Control type 
Tags  OR 95%CI  x1/n1 x0/n0  no cases  no exposed  ROB  Ref.  

S14455 R57392 
Choi a, 2023  Hydrocephalus  1st trimester  retrospective cohort (claims database)  unexposed, sick  Adjustment: Yes  0.43 [0.11;1.74]  2/12,516 784/2,655,676  786  12,516 

ref  
Total  1 studies  0.43 [0.11;1.71]  786  12,516  
x1: number of endpoints among exposed, n1: number of exposed; x0: number of endpoints among non exposed, n0: number of non exposed; ^{C:} calculated odds ratio from numbers of events and effectives 
Funnel plot not drawn. Less than 3 points.
Asymetry test pvalue = NaN (by Egger's regression)
not enought points
Funnel plot not drawn. Less than 3 points.
excluded