. Author manuscript; available in PMC: 2022 Sep 9.

Published in final edited form as: Subst Use Misuse. 2021 Sep 9;56(13):1972–1981. doi: 10.1080/10826084.2021.1963983

Table 2.

NPS group differences in age and other substances used.

	Overall Mean (SD)	No NPS Mean (SD)	Non-Sim NPS Mean (SD)	Sim NPS Mean (SD)	df	F

Age	19.72 (1.31)	19.67^a (1.31)	19.73^a (1.18)	20.22^b (1.27)	2	29.81^***
Other Substances Used	0.23 (0.61)	0.11^a (0.37)	0.53^b (0.96)	1.07^c (1.07)	2	171.03^***

Note. For these analyses, the Sim NPS group included participants who indicated past 3-month NPS and used alcohol and/or marijuana simultaneously with prescription stimulants. Within each row, means followed by different letters differ significantly (p<.05) from each other.

^***

p<.001;

^**

p<.01;

p<.05.