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Table 3 Association between hCG trajectories in early gestation and Early Pregnancy Failure

From: Gestational hormone trajectories and early pregnancy failure: a reassessment

Covariate Timeframe (days from last menstrual period)
  29–74 days 75–91 days
Gestation (days) 0.294 (0.015)*** − 0.017 (0.002)***
Gestation Squared − 0.0023 (0.0001)***  
Outcome 1.82 (0.75)* 1.03 (0.44)*
Outcome*Gestation −0.073 (0.027)** −0.021 (0.006)***
Outcome*Gestation Squared 0.0005 (0.0002)*  
  1. Regression coefficients (SE) shown were from linear mixed effects models (Stata). ***p < 0.001, **p < 0.01, *p < 0.05. Data included serial hormone levels (log transformed) from 33 women with early pregnancy failure (96 observations) and 72 women with normal pregnancy outcomes (280 observations). Gestation was limited to between 29 and 91 days from last menstrual period. hCG – human chorionic gonadotrophin