Accepting the limitations of a before-and-after study and small sample size, the findings suggest that a PLEC may improve adherence. A definitive trial is necessary to confirm the effect of a PLEC and establish the longevity and cost-effectiveness of the outcomes. Attrition of potential participants not contactable by telephone suggests the need for additional postal contact in subsequent trials. A reduction in loss to follow-up is also desirable and potentially achievable using telephone reminders.
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