Qian S, Zhang D, Zuo H, et al. Evaluation of the effectiveness of a natural fertility regulation programme in China. (Unpublished data, presented in 2003) accessed Mar 1, 2018
Key Results
In the BOM group five women became pregnant (all use-related), the pregnancy rate being 0.5%,while in the IUD group there were 12 pregnancies (2%).
Conclusion
1.The BOM is well accepted by different strata Chinese people
2. The use-effectiveness of BOM is much higher than that of TCu220c, with significantly lower pregnancy rate anddiscontinuation rate (P<0.01)
3. The extensive use of BOM will significantly decrease the artificial abortion rate
4. In infertile couples of unknown cause, the BOM is the method of choice in achieving pregnancy