“Any Use and “Frequent Use” of Opioids among Elderly Adults in 2018-2019, by Socioeconomic Characteristics,” by Asako S. Moriya and Zhengyi Fang (Statistical Brief 541, March 2022, .pdf and HTML format, 15p.).
meps.ahrq.gov/mepsweb/data_stats/Pub_ProdResults_Details.jsp?pt=Statistical+Brief&opt=2&id=1286
