Absolutely. I believe perinatal demography should allow for different units of observations: pregnancy, conception, maternal, and possibly parental. It makes a difference in the stats but even more important, a difference in research question.

Packed room for our session on #perinatal-demography at #paa2025 with Payal Hathi, @alisongemmill.bsky.social, Tim Bruckner, Haley Comfort @ihmeuw.bsky.social, and @jnobles.bsky.social as inspiring discussant.

You can download their submissions here:
submissions.mirasmart.com/PAA2025/Itin...

🌸 Armed conflict disrupts healthcare delivery and access to maternal and newborn health services. @emilytreleaven.bsky.social presents work with Kassoum Kayentao and Tracy Lin on the effects of protracted conflict on perinatal health care utilization in rural Mali. #PAA2025 myumi.ch/jJwJq