232 Percentage of Compliance: Direct Observation 100 80 JUDITH R. MATHEWS et al. BL Initial Shaping Lens Insertion 60 Parent Introduced 40 20 Follow-up 5.0 Direct Observation Parent Rating 4.0 3.0 2.0 Pierre 1.0 5 10 15 12 16 20 24 28 32 36 40 100 General Compliance 80 60 40 Parent In:->duced 20 10 1 20 2 4 100 80 60 40 20 Parent Introduced Lens Off-Center Charles 12 16 20 24 28 32 36 40 5.0 4.0 3.0 2.0 1.0 4.0 3.0 2.0 Adam 1.0 15 20 6 8 12 16 20 24 28 32 36 40 5.0 100 80 60 40 20 Introduced 1 Parent Discontinued 4.0 3.0 2.0 Joel 1.0 5-Point Parent Rating of Compliance 5 10 15 Sessions 12 16 20 24 28 32 36 40 Weeks Figure 1. The percentage of directly observed compliance and parent rating of compliance on a 5-point scale.