Table 4:

Distribution of values for Method element. (# of values; (Frequency); [# unique values])

Clinical Text	Research Measures
246 Total Values; 33 Unique Values; 12 Groups	178 Total Values; 42 Unique Values; 16 Groups
Use: 158 (64.2%) [7]   Us, use, used, uses, usage, using   Utilize Intake: 32 (13.0%) [1]   Intake Inhale: 22 (8.9%) [6]   Smoke, smokes, smiokes, smoking   Vaporized Inject: 14 (5.7%) [6]   Inject, injection   Boot   IVDU, needles	Use: 91 (51.1%) [4]   Use, used, using, usage Take: 32 (18.0%) [1]   Taken Inject: 15 (8.4%) [11]   Inject, injected   Injected using needle   Injection into the skin, IV injection Inhale: 13 (7.3%) [5]   Inhaled,   Freebasing, Huffing   Smoked, smoking