Table 5.

Effectiveness of long-term interventions (>6 months).

Study	Study quality	Sophistication of tailoring	Quality measurement adherence	Long-term effectiveness (>6 months)a
Van der Meer [36]	High	High	Low	+
Van der Meer [37]	High	High	Low	+
Chan [30]	High	Moderate	High	+
Joseph [31]	High	Moderate	Low	++
Ross [32]	High	Moderate	Low	+
Chan [29]	Low	Moderate	Low	–
Cherry [33]	Low	Moderate	Low	+

^a ++ = significant effect on medication adherence; + = moderate effect on medication adherence; – = no effect on medication adherence.