Variation in cesarean section rates among hospitals in Washington State

Area of Science:

• Obstetrics and Gynecology
• Health Services Research
• Public Health

Background:

• Cesarean section rates exhibit significant variation across healthcare facilities.
• Understanding the drivers of these variations is crucial for improving maternal healthcare outcomes.

Purpose of the Study:

• To investigate associations between hospital characteristics and patient risk factors with hospital-specific cesarean section rates.
• To identify factors contributing to the wide disparities in cesarean birth rates within Washington State.

Main Methods:

• Analysis of 1987 birth certificate data.
• Inclusion of all hospitals with at least 12 singleton live births.

Main Results:

• Cesarean section rates ranged from 0% to 43%, positively correlating with proprietary ownership, delivery service size, and patient complications or high-birthweight infants.
• Late prenatal care showed an inverse association with cesarean section rates.
• Proprietary hospitals had higher rates but served lower-risk patient populations compared to public or teaching hospitals.

Conclusions:

• Hospital and patient population factors alone do not fully account for the observed variations in cesarean section rates.
• A multifaceted approach is likely required to address and reduce unjustified high cesarean section rates.