Table-II.

Sensitivity analysis with each study omitted in fixed-effects model

Study omitted	OR	95% CI	P
None	1.01	0.90-1.13	0.90
Andersen 2009	0.98	0.87-1.11	0.75
Bae 2006	1.00	0.90-1.12	0.96
Iudicibus 2008	1.01	0.90-1.13	0.88
Kurzawski 2005	1.04	0.93-1.16	0.53
Osswald 2007	0.99	0.88-1.11	0.86
Panczyk 2009	1.01	0.90-1.13	0.85
Petrova 2007	0.99	0.88-1.11	0.84
Sainz 2011	1.08	0.91-1.27	0.40