. Author manuscript; available in PMC: 2012 Jan 12.

Published in final edited form as: AIDS Behav. 2012 Jan;16(1):151–158. doi: 10.1007/s10461-010-9866-x

Table 1.

Participants who reported using specific stimulant drugs at any visit also reported using other stimulant drugs during the study period (visit 40–48, n = 2,389)

	Any crack (n = 373)	Any cocaine (n = 352)	Any meth (n = 310)	Any MDA (n = 215)
Any crack (n = 373)	X	n = 219 (62.2%)	n = 139 (44.8%)	n = 90 (41.9%)
Any cocaine (n = 352)		X	n = 141 (45.5%)	n = 107 (49.8%)
Any meth (n = 310)			X	n = 129 (60.0%)
Any MDA (n = 215)				X
Use of only one stimulant drug	n = 93 (24.9%)	n = 70 (19.9%)	n = 82 (26.5%)	n = 37 (17.2%)
Use of 2+ stimulant drugs	n = 280 (75.1%)	n = 282 (80.1%)	n = 228 (73.5%)	n = 178 (82.8%)