Table 2.

Sample size for each substance

	Substance Class
Skip Criterion	can	sed	sti	coc	opi	hal
> 6 lifetime uses; no abuse criteria endorsed	853	140	174	233	71	142
> 6 lifetime uses; ≥1 abuse criterion endorsed	425	118	257	218	44	159
> 11 uses within one month	952	100	246	188	84	49
Total N	2230	358	677	639	199	350

Note. can = cannabis, sed = sedatives, sti = stimulants, coc = cocaine, opi = opioids, hal = hallucinogens. Participants who reported more than 6 lifetime uses but endorsed no abuse criteria were not administered the dependence criteria; zeroes were imputed on all dependence criteria for these participants. Participants who endorsed at least one abuse criterion, and those who reported more than 11 uses within one month were administered all criteria.