Modeling Pregnancy Outcomes Through Sequentially Nested Regression Models

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)602-616
Journal / PublicationJournal of the American Statistical Association
Volume117
Issue number538
Online published5 Jan 2022
Publication statusPublished - 2022

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Abstract

The polycystic ovary syndrome (PCOS) is a most common cause of infertility among women of reproductive age. Unfortunately, the etiology of PCOS is poorly understood. Large-scale clinical trials for pregnancy in polycystic ovary syndrome (PPCOS) were conducted to evaluate the effectiveness of treatments. Ovulation, pregnancy, and live birth are three sequentially nested binary outcomes, typically analyzed separately. However, the separate models may lose power in detecting the treatment effects and influential variables for live birth, due to decreased sample sizes and unbalanced event counts. It has been a long-held hypothesis among the clinicians that some of the important variables for early pregnancy outcomes may continue their influence on live birth. To consider this possibility, we develop an (Formula presented.) 10-norm based regularization method in favor of variables that have been identified from an earlier stage. Our approach explicitly bridges the connections across nested outcomes through computationally easy algorithms and enjoys theoretical guarantee of estimation and variable selection. By analyzing the PPCOS data, we successfully uncover the hidden influence of risk factors on live birth, which confirm clinical experience. Moreover, we provide novel infertility treatment recommendations (e.g., letrozole vs. clomiphene citrate) for women with PCOS to improve their chances of live birth. Supplementary materials for this article are available online.

Research Area(s)

  • Infertility study, 10 penalization, Sequentially nested binary outcome, Variable selection

Citation Format(s)

Modeling Pregnancy Outcomes Through Sequentially Nested Regression Models. / Bi, Xuan; Feng, Long; Li, Cai et al.
In: Journal of the American Statistical Association, Vol. 117, No. 538, 2022, p. 602-616.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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