Adherence and Intensification of Medications (AIM) Implementation Study

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

4622 participants

Study Classification

INTERVENTIONAL

Study Start Date

2008-08-31

Study Completion Date

2012-07-31

Brief Summary

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Background: Good blood pressure (BP) control among patients with diabetes is essential in preventing diabetes complications and has been found to be not only cost-effective but cost-saving. Nonetheless, over 25% of VA patients with diabetes do not have adequate BP control. Among these poorly controlled patients, over 65% have problems with medication adherence or inadequate intensification of medications. We therefore propose a partnership with the VA Pharmacy Benefits Management (PBM) Office and VISN 11 to evaluate a tailored clinical pharmacist-based intervention to improve medication management, adherence and BP control.

Objectives: The specific objectives of this implementation study are: 1) To evaluate the effects of the intervention on blood pressure (primary outcome) and glycemic and lipid control (secondary outcomes); 2) To assess the impact of the intervention on patients' adherence to blood pressure, anti-hyperglycemic, and lipid-lowering regimens, and intensity of these regimens; 3) To evaluate the cost-effectiveness of the intervention compared to usual care; 4) To evaluate the level of attainment of intervention implementation, examine the process of intervention implementation, and determine the potential for sustainability.

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Detailed Description

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Background: Good blood pressure (BP) control among patients with diabetes is essential in preventing diabetes complications and has been found to be not only cost-effective but cost-saving. Nonetheless, over 25% of VA patients with diabetes do not have adequate BP control. Among these poorly controlled patients, over 65% have problems with medication adherence or inadequate intensification of medications. We therefore propose a partnership with the VA Pharmacy Benefits Management (PBM) Office and VISN 11 to evaluate a tailored clinical pharmacist-based intervention to improve medication management, adherence and BP control.

Objectives: The specific objectives of this implementation study are: 1) To evaluate the effects of the intervention on blood pressure (primary outcome) and glycemic and lipid control (secondary outcomes); 2) To assess the impact of the intervention on patients' adherence to blood pressure, anti-hyperglycemic, and lipid-lowering regimens, and intensity of these regimens; 3) To evaluate the cost-effectiveness of the intervention compared to usual care; 4) To evaluate the level of attainment of intervention implementation, examine the process of intervention implementation, and determine the potential for sustainability.

Methods: In this cluster randomized implementation trial, we will proactively identify, using clinical automated data, all diabetes patients within 3 VA sites who have poor blood pressure control and either poor refill adherence or insufficient medication intensification. (NIDDK R18 funds 2 non-VA sites.) Adherence and treatment intensification patterns will also be evaluated for glycemia and lipids if either of these risk factors is poorly controlled. Clinical pharmacists, trained in motivational interviewing techniques and guided by computerized adherence modules, will identify barriers to medication adherence and provide adherence counseling. They will also be authorized to change and titrate medications following site-specific algorithms. Patients in the non-intervention (control) teams will receive usual care. Blood pressure control and refill adherence will be assessed 6-months after the end of the intervention period. We will also conduct a formative evaluation during the course of the study and assess implementation attainment and potential for dissemination.

Status: Data analysis complete. (Enrollment numbers are for VA and non-VA sites \[control and intervention\].)

Conditions

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Diabetes Hypertension

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Pharmacist management

Eligible patients assigned to - adherence counseling and medication management delivered by a clinical pharmacist trained in behavioral counseling approaches (motivational interviewing)

Group Type EXPERIMENTAL

Clinical pharmacist-based intervention

Intervention Type BEHAVIORAL

Pharmacist proactive outreach to patients systematically identified as having adherence or intensification problems; their use of tailored adherence counseling strategies; and their authorization to titrate medications according to prespecified algorithms

Usual care

Eligible patients receive usual care

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Clinical pharmacist-based intervention

Pharmacist proactive outreach to patients systematically identified as having adherence or intensification problems; their use of tailored adherence counseling strategies; and their authorization to titrate medications according to prespecified algorithms

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

1. Must be a veteran at a study site;
2. Have a diagnosis of diabetes;
3. Meet blood pressure, medication adherence and intensification requirements (as determined by the study team)