" An estimated 6.4 percent, or 7.3 million, of full-time workers reported use of marijuana during the past month (Tables 2.2 and 2.3).
" Adults aged 26 to 34 were only about half as likely as 18- to 25-year-olds to be past month marijuana users (8.0 vs. 15.9 percent). Past month use of marijuana was lower with increasing age (Table 2.2).
" The prevalence of past month marijuana use was higher for males than females (7.9 vs. 4.3 percent, respectively) (Table 2.2).
" An estimated 11.0 percent of workers reporting two or more races used marijuana during the past month. This was higher than among non-Hispanic white adults (6.9 percent). Fewer Hispanic adults (4.6 percent) reported past month marijuana use than non-Hispanic white adults who reported two or more races (Table 2.2).
" Higher educational attainment and higher family income were associated with a lower prevalence of current marijuana use (Table 2.3)."
Larson, S. L., Eyerman, J., Foster, M. S., & Gfroerer, J. C. (2007). Worker Substance Use and Workplace Policies and Programs (DHHS Publication No. SMA 07-4273, Analytic Series A-29). Rockville, MD: Substance Abuse and Mental Health Services Administration, Office of Applied Studies, pp. 15-16.