News
October 22, 2026 New website! Finally, a new website! Take a look at my current research!
Archive, 2020–2022
September 6, 2022 Promoted to full professor I've been promoted to full professor at UMass Amherst. Here is a reflection note (PDF) on my work, the field, and my plans.
July 1, 2022 Congratulations, Dr. Herb Susmann Herb defended his dissertation, Bayesian Hierarchical Temporal Modeling and Targeted Learning with Application to Reproductive Health. Post
April 7, 2022 New family planning measures at PAA 2022 Chi Hyun Lee presented our paper with Herb Susmann on new measures for family planning and exposure to the risk of pregnancy. Post
March 24, 2022 Country estimates of unintended pregnancy and abortion Guttmacher, WHO and HRP released country-specific estimates, produced with our Bayesian demographic accounting model. Post
December 10, 2021 Congratulations, Dr. Zhengfan Wang Zhengfan successfully defended his dissertation. Post
November 1, 2021 Service statistics improve estimates of contraceptive use A paper led by Niamh Cahill shows how family planning service statistics, compiled by Track20 M&E officers, improve estimates. Post
September 27, 2021 Sex ratio at birth methods paper in AOAS Our global Bayesian method for estimating and projecting the sex ratio at birth was published in the Annals of Applied Statistics. Post
August 27, 2021 UN IGME stillbirth estimates in The Lancet About 2.0 million babies were stillborn in 2019. Post
August 3, 2021 Projecting missing female births to 2100 A BMJ Global Health paper projects the sex ratio at birth for all countries to 2100 under different scenarios. Post
April 1, 2021 fpemlocal R package Our R package fpemlocal is described in Gates Open Research.
March 30, 2021 Sex ratio at birth preprint The methods paper was accepted in AOAS, and a preprint with estimates was posted on arXiv. Post
February 22, 2021 Building blocks for temporal models A preprint with Monica Alexander and Herb Susmann introduced a model class for temporal models of multiple populations. Post
February 12, 2021 Bayesian cohort component model preprint With Monica Alexander: a model for subnational populations in data-sparse settings. Post
October 8, 2020 UN IGME stillbirth estimates, 2000–2019 Released along with a methods preprint led by Zhengfan Wang. Post
July 22, 2020 Estimating abortion and unintended pregnancy Our paper on an accounting model was published, about five years after the project started. #BongaartsGoesBayesian Post