Chemical adherence testing-guided intervention versus standard of care in patients with hypertension who are non-adherent to antihypertensive treatment in the UK (OUTREACH): a multicentre, randomised controlled trial.

There was a nominally significant difference in adherence between the groups at visit 4; however, the difference was not considered statistically significant in view of multiple secondary outcomes examined (adjusted mean difference 12·7% [95% CI 0·9 to 24·4]; p=0·035; table 2 ).

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