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. Author manuscript; available in PMC: 2008 Feb 5.
Published in final edited form as: Drug Alcohol Depend. 2007 Jul 2;91(1):57–68. doi: 10.1016/j.drugalcdep.2007.05.011

Exhibit 1.

Repeated Measures Spanning 42 Months: Seven 6-Month Periods (0 represents baseline)

Months
-12 -6 0 6 12 18 24 30
Time 1 Time 2 Time 3 Time 4 Time 5 Time 6 Time 7
6 months 6 months* 6 months 6 months 6 months 6 months 6 months
*

Indicates time period that is the reference period