Table 2:

Distribution of values for Type element. (total # of values per group; (frequency); [# unique values])

Clinical Text	Research Measures
472 Total Values; 109 Unique Values; 34 Groups	824 Total Values; 408 Unique Values; 203 Groups
Marijuana: 83 (17.6%) [11]   Cannabis   Marijana, marijuana, marijuanna, MJ   Medical marijuana, prescribed marijuana Caffeine: 77 (16.3%) [10]   Caffein, caffeine   Coffee, coffees, ice coffee, green tea, tea   Cola, pepsi, soda, energy drinks Illegal drugs: 62 (13.1%) [10]   Illegal drug, illicit substance   All illicit, illicit drug, illicits   Multiple illicit drugs	Drugs: 69 (8.4%) [16]   Any other drugs, drug products   Drug non-medical use only   Drugs not prescribed by a doctor Marijuana: 50 (6.1%) [12]   Cannabinoids, cannabis   Hash, hash oil, hashish   Marijuana, mary jane Cocaine: 47 (5.7%) [10]   Angel dust   Cocaine, coke, crack   Cocaine in chunk form