From... 
(Take Action Against Substance Abuse and Gun Violence)
Survey Shows Increase in Marijuana, Cocaine Emergency Room Visits
New data in the Drug Abuse Warning Network (DAWN) shows that emergency department visits for cocaine increased 10 percent and marijuana increased 15 percent from 2000 to 2001, according to an Aug. 21 press release from the Substance Abuse & Mental Health Services Administration (SAMHSA).
Hmmmm...
In 2001, there were 638,484 drug-related ED episodes in the coterminous U. S. (Table 2.2.0), a rate of 252 ED episodes per 100,000 population (Table 12.2.0). On average, 1.8 drugs were reported per episode for a total of 1,165,367 drug mentions. ED drug mentions and ED drug episodes each increased 6 percent from 2000 to 2001 (Table 2.2.0). Total ED visits (that is, ED visits for any reason) increased 5 percent (from 96.1 million to 100.5 million) during this period.
Eight out of every 10 ED drug mentions (82%) come from only 7 categories: alcohol-in-combination, cocaine, heroin, marijuana, benzodiazepines, antidepressants, and analgesics. In 2001, alcohol-in-combination was a factor in 34 percent of ED drug episodes (218,005 mentions), cocaine in 30 percent (193,034), marijuana in 17 percent (110,512), and heroin in 15 percent (93,064). Taken together, the benzodiazepines, antidepressants, and analgesics constituted 339,484 ED mentions in 2001, or nearly 30 percent of total ED drug mentions.
Snip...Drug Episode: A drug-related ED episode is an ED visit that was induced by or related to the use of an illegal drug( s) or the nonmedical use of a legal drug for patients age 6 to 97 years.
Drug Mention: A drug mention refers to a substance that was recorded (" mentioned") during a drug-related ED episode. Because up to 4 drugs (and alcohol) can be reported for each drug abuse episode, there are more mentions than episodes cited in this report.
Snip...his (sic) issue of Emergency Department Trends From DAWN presents final estimates for 2001, with comparisons to 1994, 1999, and 2000. The revised estimates in the ED Trends From DAWN publication series supersede the estimates published previously for 1994 through 2001.
Snip...Marijuana: Marijuana mentions increased 15 percent (from 96,426 to 110,512) from 2000 to 2001 (Tables 2.2.0 and 3.12). Comparing estimates for 2000 and 2001, increases in marijuana mentions were evident for Minneapolis (49%, from 803 to 1,200), San Diego (16%, from 955 to 1,107), Seattle (13%, from 1,414 to 1,596), San Francisco (12%, from 627 to 704), and Baltimore (10%, from 1,620 to 1,786). Decreases occurred only in New Orleans (-24%, from 1,068 to 814).
"Estimates" and from only 21 metropolitan areas.
Please take me off of your ping list JediGirl. You really should read the reports...
http://www.samhsa.gov/oas/DAWN/Final2k1EDtrends/text/EDtrend2001v6.pdf and you can use this Adobe PDF Conversion by Simple Form. Just copy and paste.