Table 4.

Adjusted Zuni-Ramah Cesarean Delivery Rate by Case-Mix Analysis

PopulationCrude cesarean delivery rateAdjusted* cesarean delivery rate (95% CI)Adjusted rate difference (95% CI)
CI indicates confidence interval; NA, not applicable.
* Adjusted to the case mix of the published data for the Boston community-based practitioners.26
† A community-based obstetric population in Boston.
‡ P < .0001.
Standardized†21.5%21.5% (20.5%–22.6%)NA
Zuni-Ramah7.3%11.5% (9.9%–13.1%)= 10.0% (−12.0% to −8.1%)‡