The likelihood of adverse outcomes in triplet pregnancies estimated by pregravid maternal characteristics

OBJECTIVE: To estimate the likelihood of adverse outcomes in triplet pregnancies by a score comprising pregravid maternal characteristics. DESIGN: A cross-sectional study. SETTING: Triplets database collected by Matria Healthcare, Inc. PATIENT(S): A scoring system was constructed, assigning 1 point for the presence of a risk factor (nulliparity, stature <165 cm, and age <35 years) and 0 for the absence of a risk factor. Data related to 2,887 triplet sets were analyzed. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Total triplet birth weight <4,500 and delivery at 27-32 weeks. RESULT(S): We identified 18% of triplets' mothers (score 3) in whom the likelihood for adverse results is 50%-90% higher and the likelihood for optimal results is 40% to 70% lower than background rates. CONCLUSION(S): A pregravid maternal profile could estimate the likelihood of adverse outcomes and be used for consulting patients at risk of having or carrying a triplet pregnancy.