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. Author manuscript; available in PMC: 2023 Jun 7.
Published in final edited form as: Arch Pediatr Adolesc Med. 1994 Sep;148(9):959–964. doi: 10.1001/archpedi.1994.02170090073014

Table 2.

Comparisons by t Test/χ2 of Polydrug Use

Variable Cocaine Users
(n=100)		 Controls
(n=100)
No other drugs, % 12 54†
Alcohoi use, % 44 10†
Cigarette use, % 71 40†
Cigarettes smoked per day* 10.4±9.9 4.5±6.7†
Marijuana use, % 18 6‡
Heroin use, % 2 0
*

Values are mean±SD.

†

P<. 001.

‡

P<.01.