This randomised controlled trial investigated blood pressure control in Mäori and Pacific patients with type 2 diabetes mellitus and diabetic nephropathy. Participants (n = 65) were randomised to usual clinic care (UC) or community care (CC) where they received monthly visits by nurse-led Mäori or Pacific Island Health Care Assistants (HCA). During community visits the HCA adjusted antihypertensive medication according to protocol, toward a target blood pressure of < 130/80. Reassessment occurred at 12 months at closure (14-23 months). Overall, community care was more effective than usual care.