Stanford et al (2008). Outcomes from treatment of infertility with natural procreative technology in an Irish general practice. JABFM 21(5), 375–384.
Key Results
In life-table analysis, the cumulative proportion of first live births for those completing up to 24 months of NPT treatment was 52.8 per 100 couples. The crude proportion was 25.5. Younger couples and couples without previous ART attempts had higher rates of live birth. Among live births, there were 4.6% twin births.
Conclusion
NPT provided by trained general practitioners had live birth rates comparable to cohort studies of more invasive treatments, including ART.