an increasing trendP = .001
The total amount of opioids dispensed in the first prescription after surgery decreased in the 2 years following the CDC guideline release, compared with an increasing trend in the 2 years prior (prerelease trend: 1.43 MME/month; 95% CI, 0.62 to 2.24 MME/month; P = .001; postrelease trend: −2.18 MME/month; 95% CI, −3.01 to −1.35 MME/month; P < .001; trend change: −3.61 MME/month; 95% CI, −4.87 to −2.35 MME/month; P < .001).