Clinical and demographic correlates of medication and visit adherence in a large randomized controlled trial. - Whittle, Jeff; Yamal, José-Miguel; Williamson, Jeffrey D.; Ford, Charles E.; Probstfield, Jeffrey L.; Beard, Barbara L.; Marginean, Horia; Hamilton, Bruce P.; Suhan, Pamela S.; Davis, Barry R.; ALLHAT Collaborative Research Group (BMC Health Services Research, 2016)