The abstinence rate was 46.2 % ( 61/132 ) in the intervention group and 14.5 % ( 10/69 ) in the control group ( adjusted OR 7.5 [ 3.0-18 .6 ] ) at 3 months ; 44.3 % ( 58/131 ) and 18.8 % ( 13/69 ) at the primary end point of 6 months ( adjusted OR 4.2 [ 1.8-9 .7 ] ) ; and 42.0 % ( 55/131 ) and 24.6 % ( 17/69 ) at 14 months ( adjusted OR 2.2 [ 1.0-4 .8 ] ) .
