Fertility metrics as a function of the number of cycles of attempted conception for example 3.

In example 3, 1% of couples are assumed to have an intrinsic conception rate of zero. The remaining 99.5% of the population are assumed to have intrinsic conception rates described by a beta distribution, with α = 11 and β = 22.在示例3中，本研究假设1%的夫妇其固有受孕率（intrinsic conception rate）为0；剩余99.5%的受试人群的固有受孕率服从参数α=11、β=22的贝塔分布（beta distribution）。