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Table 2 Associations between current drug problem and health status, as measured by SF-12 scores.

From: Drug problems among homeless individuals in Toronto, Canada: prevalence, drugs of choice, and relation to health status

  Physical
Component
Subscale
Mental
Component
Subscale
  Mean (SD) Mean (SD)
   Current drug problem 46.6 (10.6) 38.8 (12.9)
   Without current drug problem 45.7 (11.4) 42.0 (13.2)
   p-value 0.17 < 0.001
   Recent cocaine use 44.8 (11.4) 38.1 (12.7)
   No recent cocaine use 46.5 (11.0) 41.7 (13.2)
   p-value 0.02 < 0.001
  Beta (95% CI) Beta (95% CI)
Change in SF-12 score associated with   
   Current drug problem* -0.03 (-1.3 to +1.3) -4.9 (-6.5 to -3.2)
   Recent cocaine use* -1.3 (-2.7 to +0.06) -4.7 (-6.4 to -3.0)
  1. * In linear regression models adjusted for sex, age, level of education, and race/ethnicity.