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Table 3 Adherence at and beyond eight and twelve sessions in intention-to-treat and per-protocol analysis

From: The Effect of Using Assessment Instruments on Substance-abuse Outpatients' Adherence to Treatment: a Multi-centre Randomised Controlled Trial

 

> = 8 sessions

> = 12 sessions

Intention-to-treat (n = 227)

  

experimental

53.4%

33.6%

control

34.2%

20.7%

   Risk ratio (RR)

1.6

1.6

   95%CI

1.2-2.1

1.0-2.5

Per-protocol (n = 211)

  

experimental

56.0%

36.0%

control

34.2%

20.7%

   Risk ratio (RR)

1.6

1.7

   95%CI

1.2-2.2

1.1-2.7