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. Author manuscript; available in PMC: 2012 Feb 13.
Published in final edited form as: J Pharm Pract. 2011 Nov 17;24(6):551–560. doi: 10.1177/0897190011426558

Table 2.

Past-Year Prevalence of Specific Formulations of Prescribed Stimulant Medication for attention-deficit hyperactivity disorder (ADHD)a

Prescribed Users
(n = 55)b N (%)
Non-Misusers
(n = 33)b N (%)
Misusers
(n = 22)b N (%)
Single-Agent Misusers
(n = 16)c N (%)
Adderall 19 (34.5) 9 (27.3) 10 (45.5) 7 (43.8)
Adderall XR 17 (30.9) 9 (27.3)   8 (36.4) 4 (25.0)
Concerta 13 (23.6) 7 (21.2)   6 (27.3) 2 (12.5)
Methylphenidate 4 (7.3)   2 (6.1)   2 (9.1) 2 (12.5)
Ritalin 2 (3.6) 1 (3)   1 (4.5) 1 (6.2)
Ritalin LA 2 (3.6) 1 (3)   1 (4.5)
Focalin XR 2 (3.6) 1 (3)   1 (4.5)
Ritalin SR 1 (1.8) 0 (0)   1 (4.5)
Metadate ER 1 (1.8) 0 (0)   1 (4.5)
Methylin 1 (1.9) 1 (3)   0 (0)
Daytrana 1 (1.8) 0 (0)   1 (4.5)
a

The following formulations were not endorsed by any of the respondents: methylphenidate extended release, Metadate CD, Methylin ER, Focalin, amphetamine/dextroamphetamine combination, dextroamphetamine, dextroamphetamine extended release, Dexedrine, Dexedrine Spansules, Dextrostat.

b

Specific formulations not mutually exclusive; percentages do not equal 100%.

c

Specific formulations are mutually exclusive; percentages equal 100%.