As the article mentioned, the single imbalance will be much larger than the birth imbalance. This is because once a pair has formed, they drop out of the statis

As the article mentioned, the single imbalance will be much larger than the birth imbalance. This is because once a pair has formed, they drop out of the statistic, leaving just single men behind, and no single women. The article predicted 186:100 single ratio in China, even though the birth ratio was much lower.