1. Dilation < 3cm at Time of Admit Decision & Risk of OB Complications Data from Sutter Health FPAD: 2001-2002 Elliott Main, MD (inductions excluded N = 4,151) Relative Risk = 1.9 p <.00001

2. Relative Risk = 2.1 p <.0001 Cleveland Metro: 3,087 Low Risk NTSV women in spontaneous labor (1993-2001) Bailit J etal: Obstet Gynecol 2005;105:77-9. Dilation < 3cm at time of Admit Decision & Risk of Obstetric Complications

3. NTSV Induction Rate Correlates with NTSV Cesarean Rate 0% NTSV <41wks Induction Rate NTSV CB Rate 10% 15% 20% 25% 30% 10%20% 30%40% r = 0.57 (r 2 =0.32) p<0.0001 -20 Hospitals -Circle size is proportionate to birth rate

4. NTSV Early Labor Admit Rate Correlates with NTSV Cesarean Rate NTSV Early Labor (<3cm) Admission Rate 10% 15% 20% 25% 30% 10%20%50%60% 30%40% r = 0.62 (r 2 =0.38) p<0.0001 NTSV CB Rate -20 Hospitals -Circle size is proportionate to birth rate

5. Combined Induction+Early Admit Rate Correlates BEST with NTSV Cesarean Rate 10% 15% 20% 25% 30% 20%40%60%80% NTSV Induction Rate + Early Labor Admission Rate NTSV CB Rate r = 0.73 (r 2 =0.53) p<0.0001 Induc. Early Admit All Births