Table 2

Patterns of Drug Use at 6 Months by Baseline Status

Use Pattern for the Last 30 Days, 6 Months After Baseline, n (%)Baseline Use Pattern P Value
Weekend Only (n = 52)Not Weekend Only (n = 431)
No usea14 (26.9)56 (13)
Weekend-only use10 (19.2)22 (5.1)
Not–weekend-only use28 (53.9)353 (81.9).001b
  • a Among participants with drug use at baseline.

  • b Overall chi-square test of association. Subsequent post-hoc tests suggest significant differences for each category 6 months later.