Creating an online resource providing hospital cancer surgery volumes in California.

172 Background: Little evidence is available to help patients and providers, payers and policymakers find the highest-quality hospitals for cancer surgery. We initiated a groundbreaking effort in California ( www.calqualitycare.org ) to publicly report hospital cancer surgery volume data online.

METHODS: With financial support from the nonprofit California HealthCare Foundation, we assembled a multidisciplinary team to oversee the project and ensure sound methodology. We obtained existing hospital discharge summary data from the California Office of Statewide Health Planning and Development (OSHPD). We selected cancer surgeries eligible for display through comprehensive review of the literature addressing the association of hospital volume and mortality. We found eleven cancer sites with sufficient evidence of association including bladder, brain, breast, colon, esophagus, liver, lung, pancreas, prostate, rectum, and stomach. Experts advised volume calculation and display of results. Leaders of low volume hospitals were interviewed to understand the reasons for low volume.

RESULTS: In 2014, about 60% of cancer surgeries in California were performed at hospitals in the top 20% of volume, but many hospitals performed low numbers of complex procedures, with the per hospital median number of surgeries for esophageal, pancreatic, stomach, liver, or bladder cancer surgeries at 4 or less. Low-volume hospitals included rural and urban hospitals, with small and large bed sizes, and teaching and non-teaching status. At least 670 Californians received cancer surgery at hospitals that performed only one or two surgeries for a particular cancer site; 72% of those patients lived within 50 miles of a top-20% volume hospital.

CONCLUSIONS: This project demonstrates the potential for public information about hospital volumes to point patients towards high-volume and away from low-volume hospitals. Data regarding 2014 volumes are now available online.