TY - GEN AU - Nicholson,J M AU - Kellar,L C AU - Kellar,G M TI - The impact of the interaction between increasing gestational age and obstetrical risk on birth outcomes: evidence of a varying optimal time of delivery SN - 0743-8346 PY - 2006///1108 KW - Adolescent KW - Adult KW - Cohort Studies KW - Delivery, Obstetric KW - methods KW - Female KW - Gestational Age KW - Humans KW - Hypertension, Pregnancy-Induced KW - Maternal Age KW - Models, Statistical KW - Outcome Assessment, Health Care KW - Pregnancy KW - Pregnancy Outcome KW - Pregnancy in Diabetics KW - Regression Analysis KW - Retrospective Studies KW - Risk Factors N1 - Publication Type: Journal Article UR - https://doi.org/10.1038/sj.jp.7211528 ER -