1. Evidence of absence or absence of evidence
Evidence of absence or absence of evidence? A reanalysis of the effects of low-dose aspirin in in vitro fertilization 
Marcus D. Ruopp, B.A., Tara C. Collins, M.D., Brian W. Whitcomb, Ph.D., Enrique F. Schisterman, Ph.D. 
Fertility and Sterility 
Volume 90, Issue 1, Pages (July 2008)
DOI: /j.fertnstert
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Forest plot of the effect of aspirin versus placebo or no treatment on clinical pregnancy rate per ET in full analysis with use of fixed-effects model. ASA = aspirin; ART = assisted reproductive technology; RR = relative risk; Z = test statistic for overall effect.
Fertility and Sterility  , 71-76DOI: ( /j.fertnstert )
Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions