Increasing Autonomous Motivation in ESRD to Enhance Phosphate Binder Adherence

Completed · Not applicable

Conditions studied: End Stage Renal Disease

In brief

Hyperphosphatemia in end-stage renal disease (ESRD) patients is a non-traditional risk factor for all-cause and cardiovascular mortality. Non-adherence to phosphate binders is as high as 74% in ESRD patients and has been shown to be most related to psychosocial factors including attitudes. There is limited data on the influence of attitudes and perceived autonomy support on phosphate binder adherence and these two psychosocial constructs can be positively influenced through the use of motivational interviewing skills to increase autonomous motivation. Furthermore, racial disparities are known to exist in ESRD however and there are still gaps, which exist in understanding the determinants of disparities in adherence in vulnerable patients with ESRD. In this study, the investigators seek to determine the impact of motivational interviewing on phosphate binder adherence in diverse ESRD patients. The investigators will ask all the subjects to fill out surveys mainly regarding their attitudes; perceived providers' autonomy support and phosphate binder adherence. The investigators will administer motivational counseling to subjects in the intervention arm of the study, at baseline and 1 month after recruitment. The investigators will ask all the subjects to fill out the same surveys 2 months after recruitment and the investigators will compare subjects who underwent motivational interviewing to those who did not.

Key facts

Study ID

NCT02215655

Run by

Vanderbilt University

People needed

150

Starts

2014-09-01

Expected to finish

2015-05-01

Last updated by the study team

2016-04-29

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Adults age 18 years or older
• Receiving phosphate binder therapy currently
• English speaking

You may not qualify if…

• Non- English speaking
• Known diagnosis of psychosis or dementia, limiting ability to provide informed consent
• Any medical condition that precludes participation in the study including deafness, dying etc.
• Initial Morisky Medication Adherence score greater than 6

Where it is running

• Vanderbilt University Medical Center — Nashville, Tennessee, United States

Full record on ClinicalTrials.gov

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