Statistical analysis
REGRESSION
To be included in this analysis, patients had to receive an SCP and complete 18 months of follow‐up. We performed a descriptive analysis of tests ordered outside of SCPs, including frequency and percentage of tests consistent with overuse, and patients with testing consistent with overuse. Negative binomial regression was used to determine if the rate of testing consistent with overuse differed across the three study arms of the SCP delivery method. There were no hypotheses for these exploratory analyses.