FIG A3.

Driving distance to Memorial Sloan Kettering (MSK) and probability of visiting the MSK Urgent Care Center (UCC). When we investigated whether MSK patients were more likely to go to MSK or an outside hospital emergency department (ED) or urgent care on the basis of driving duration, we found that patients who lived within 30 minutes came to MSK approximately 79% of the time, compared with using all patients where only 51% visited the MSK UCC. Driving duration was based on patients’ addresses and Google Maps (Google, Mountain View, CA)–estimated average driving duration on a weekday.