Drinks per drinking day Instantaneous Improvement (week 1) Percent days abstinent Acute Treatment Phase (weeks 1 & 12) Percent days abstinent Drinks per drinking day Drinks per drinking day 0 1 12 0 1 12 0 1 12 0 1 12 0 1 12 0 1 12 33 29 30 17.9 22.8 15.7 32 30 30 18.7 22.5 15.6 81 69 92 3.8 8.7 1.5 Group Pretreatment Week 1 Group Week 1 Week 12 BMC Public Health 2005, 5:75 http://www.biomedcentral.com/1471-2458/5/75 Table 6: Change in primary outcomes for various periods of the study for participants who dropped out early (0 or 1 week) and for those who received full treatment (12 weeks). Total Improvement Percent days abstinent Group Pretreatment Follow-up 3% of the variance in outcome might be attributed to treatment. The correlations existed before most treatment occurred, at week 1 (Table 3). We would normally infer from the correlations in Table 2 that more treatment produces bet- ter drinking outcomes, but the Table 3 correlations sug- gests the reverse, that better drinking levels predict more treatment. Page 7 of 11 (page number not for citation purposes) 72 64 86 7.3 7.6 3.2 81 69 92 3.8 8.7 1.5 81 63 96 5.0 8.8 1.1 t= 1.95 9.30 31.74 1.75 11.99 34.68 t= 9.17 8.43 35.30 1.75 9.69 35.28 t= .19 1.69 2.82 1.08 .82 2.05 df 85 105 354 85 105 354 df 56 87 339 56 87 339 df 56 87 339 56 87 339 p= .000 .000 .000 .000 .000 .000 p= .000 .000 .000 .000 .000 .000 p= .852 .098 .005 .283 .415 .041 Effect 1.498 1.320 2.042 1.534 1.552 2.494 Effect 1.981 1.447 2.317 2.097 1.770 2.909 Effect -.025 -.174 .155 -.172 -.090 .126