Symptomatic patients with an early viable intrauterine pregnancy: HCG curves redefined.

@article{Barnhart2004SymptomaticPW,
  title={Symptomatic patients with an early viable intrauterine pregnancy: HCG curves redefined.},
  author={Kurt Thomas Barnhart and Mary D. Sammel and Paolo F. Rinaudo and Lan Chuan Zhou and Amy C Hummel and Wensheng Guo},
  journal={Obstetrics and gynecology},
  year={2004},
  volume={104 1},
  pages={50-5}
}
OBJECTIVE To analyze the change in serial human chorionic gonadotropin (hCG) levels in women symptomatic with pain or bleeding who presented with nondiagnostic ultrasonography but were ultimately confirmed to have a viable intrauterine pregnancy. METHODS The rise in serial hCG measures were modeled over time, with the start point defined in 2 ways: by last menstrual period and by date of presentation for care. Both semiparametric (spline) curves and linear random-effects models were explored… CONTINUE READING