[-]LGS11d100I don't expect there's any good data on women under age 25. Your claim that 19 is the best age appears to be based on the one graph of "fecundability", which is not the probability of pregnancy conditioned on trying but the probability of pregnancy conditioned on nothing, i.e. it's confounded by whether the couples want kids. It's from a paper that's been unpublished for 3 years now.
Continue reading...
，推荐阅读新收录的资料获取更多信息
对乐欣户外而言，资本市场的大门已经敞开，但真正的战斗，才刚刚打响。，更多细节参见新收录的资料
Then HK$565 per month. Complete digital access to quality FT journalism on any device. Cancel anytime during your trial.