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.  

S3379 R6252 
Clementi, 2010  Choanal atresia  1st trimester  case control  unexposed (general population or NOS)  Adjustment: Yes  36.96 [6.60;207.09]  4/80 54/18,051  58  80 

ref  
S3357 R6099 
Barbero, 2008  Choanal atresia  1st trimester  case control  unexposed, disease free  Adjustment: No  17.75 [3.49;121.40]  10/12 51/232  61  12 

ref  
Total  2 studies  25.89 [7.52;89.13]  119  92  
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