Predictors of timing of pregnancy discovery

Contraception. 2018 Apr;97(4):303-308. doi: 10.1016/j.contraception.2017.12.001. Epub 2017 Dec 11.

Abstract

Objective: Earlier pregnancy discovery is important in the context of prenatal and abortion care. We evaluated characteristics associated with later pregnancy discovery among women seeking abortion care.

Study design: Data come from a survey of women seeking abortion care at four family planning facilities in Utah. The participants completed a survey during the state-mandated abortion information visit they are required to complete prior to having an abortion. The outcome in this study was pregnancy discovery before versus after 6 weeks since respondents' last menstrual period (LMP). We used logistic regression to estimate the relationship between sociodemographic and health-related independent variables of interest and pregnancy discovery before versus after 6 weeks.

Results: Among the 458 women in the sample, 28% discovered their pregnancy later than 6 weeks since LMP. Most (n=366, 80%) knew the exact date of their LMP and a significant minority estimated it (n=92, 20%). Those who estimated the date of their LMP had higher odds of later pregnancy discovery than those who knew the exact date (adjusted odds ratio (aOR)=1.81[1.07-3.07]). Those who used illicit drugs weekly, daily, or almost daily had higher odds of later pregnancy discovery (aOR=6.33[2.44, 16.40]).

Conclusion: Women who did not track their menstrual periods and those who frequently used drugs had higher odds of discovering their pregnancies later.

Implications: Women who estimated the date of their LMP and who frequently used drugs may benefit from strategies to help them recognize their pregnancies earlier and link them to care when they discover their pregnancies later.

Keywords: Drug use during pregnancy; Pregnancy discovery; Pregnancy recognition; Unintended pregnancy.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abortion, Induced
  • Adolescent
  • Adult
  • Drug Users
  • Female
  • Gestational Age*
  • Humans
  • Logistic Models
  • Menstrual Cycle*
  • Pregnancy
  • Pregnancy Trimester, First*
  • Pregnancy, Unplanned
  • Prospective Studies
  • Time Factors
  • Utah
  • Young Adult