Maybe I'm reading into this wrong, but I think the interpretation of fertility statistics may be underestimating/overlooking how much rape and sexual violence contributes to the high fertility rates we're seeing in impoverished countries struggling with widespread violence.

Countries like the ones in Scandinavia have lower rape statistics and access to abortion which could explain a lot about those numbers and why they are the way they are. Again, it's a just hypothesis, but one worth mentioning I think.