Table 1.

Total prescriptions of opioids before and after the rescheduling of hydrocodone in October 2014

	Total	Oct 2011–Oct 2014	Nov 2014–Nov 2017	Percent Change
a) Total numbers of prescriptions by opioid
Total opioid prescriptions	64,717,150	35,308,296	29,408,854	–16.7
Hydrocodone	25,683,086	15,119,150	10,563,936	–30.1
Oxycodone	20,777,414	10,563,948	10,213,466	–3.3
Tramadol	12,051,633	6,290,076	5,761,557	–8.4
Hydromorphone, meperidine, methadone, morphine, oxymorphone	3,635,439	1,969,668	1,665,771	–15.4
Codeine	2,569,576	1,365,452	1,204,124	–11.8
b) Total numbers of prescriptions by physician specialty of all opioids and only hydrocodone
Prescriptions by specialty: all opioids
Internal medicine	20,875,072	12,538,303	8,336,769	–33.5
Emergency medicine	2,257,678	1,445,346	812,332	–43.8
Anesthesiology	3,173,583	1,863,533	1,310,050	–29.7
Prescriptions by specialty: hydrocodone
Internal medicine	8,177,098	5,241,426	2,935,672	–44.0
Emergency medicine	1,182,989	770,445	412,544	–46.5
Anesthesiology	776,105	465,631	310,474	–33.3