Table 1.

Data set statistics.

Year	Reddit comments, n	Reddit authors, n	Opiates subreddits, n	Opiates comments, n	Opiates authors, n	Authors’ prevalence
2014	545,720,071	8,149,234	19	386,984	12,381	0.0015
2015	699,245,245	10,673,990	19	470,609	15,888	0.0015
2016	840,575,089	12,849,603	25	612,619	21,791	0.0017
2017	1,045,425,499	14,219,062	30	866,023	28,358	0.0020
2018	1,307,123,219	18,158,464	25	919,036	33,700	0.0019