A Medical Assistant-Based Program to Promote Healthy Behaviors in Primary Care

Not Applicable

Completed

• Conditions: Smoking; Problem Drinking; Sedentary Lifestyle; Unhealthy Diet
• Interventions: Behavioral: Intervention for 4 behavioral risks by medical assistants.

• Registration Number: NCT00273806
• Lead Sponsor: The University of Texas Health Science Center at San Antonio

Brief Summary

The purpose of the study is to determine whether a program of screening and intervention for four health risk behaviors (smoking, problem drinking, sedentary lifestyle, unhealthy diet) carried out by medical assistants in primary care practices can help patients improve their behaviors. The hypothesis is that patients who receive the intervention will demonstrate higher rates of health behavior change than patients who receive usual care.

Detailed Description

Unhealthy behaviors are the most common actual causes of death in the United States. The high prevalence of behavioral risk factors in primary care calls for a response of appropriate scale. One strategy to achieve a greater scale of delivering interventions is to relieve the bottleneck of physician assessment and management. Creating a system that engages other members of the primary care team to link patients who are ready to change with practice, health system and community resources is a mechanism to amplify the practice's impact and thus achieve the necessary scale.

The project evaluates a model of primary care that manages population risk with appropriate expertise at the necessary scale. We test the effectiveness of a medical assistant-based program to link patients with behavioral risk factors to interventions at the practice, health system, and community levels. We hypothesize that intervention-group patients will achieve higher rates of behavior change than control patients.

The study is a controlled trial in the PRENSA network, which includes six urban practices serving a disadvantaged Latino population. Using data from a health risk assessment (HRA) routinely collected in PRENSA practices, medical assistants will assess 4500 patients' behavioral risks and apply behavior-specific "assess-advise-agree-assist-arrange" algorithms to engage behavioral interventions in the practices, health system, and local public health department. Outcomes data will be collected at 6-9 month follow-up with repeated completion of a standardized health risk assessment. The primary analyses will compare outcome measures for smoking, problem drinking, sedentary lifestyle, and unhealthy diet in intervention and control patients.

We anticipate the study will show a medical assistant-based program to address smoking, risky drinking, sedentary living, and unhealthy diet in primary care to be feasible and effective. We will evaluate program effectiveness by assessing the number of patients reached, interventions requested and completed, impact on medical assistant workflow and satisfaction, costs to the practices, and impact on health behaviors.

Study Timeline

• Study Start: 2005-12
• Study First Submitted: 2006-01-04
• Study First Submitted QC: 2006-01-04
• Study First Posted: 2006-01-09
• Primary Completion: 2007-05
• Study Completion: 2007-05
• Status Verified: 2008-08
• Last Update Submitted: 2008-08-26
• Last Update Posted: 2008-08-27

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 864

Inclusion Criteria

• Age 18 or over
• Uninsured, enrolled in Bexar County CareLink program
• Has completed baseline Health Risk Assessment

Exclusion Criteria

• Unwillingness to participate

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
1	Intervention for 4 behavioral risks by medical assistants.	Medical assistant identification and referral for behavioral risk factors.

Primary Outcome Measures

Name	Time	Method
Proportion of intervention-group vs. control group patients with behavioral risks at follow-up (individual behaviors separately and combined behaviors).

Secondary Outcome Measures

Name	Time	Method
Total number of health risks identified and interventions ordered by medical assistants (measure program impact).
Rate of behavioral risks identified by MA's (risks identified/patients assessed).
Rate of interventions ordered by MA's (interventions ordered/patients assessed).
Time-motion impact of intervention on medical assistants.
Impact on MA satisfaction (qualitative interviews).
Cost of intervention.

Trial Locations

Locations (6)

University Health Center North; 🇺🇸 San Antonio, Texas, United States

University Health Center Southeast; 🇺🇸 San Antonio, Texas, United States

University Physicians Group - Diagnostic Pavilion; 🇺🇸 San Antonio, Texas, United States

University Health Center Southwest; 🇺🇸 San Antonio, Texas, United States

University Health Center Downtown; 🇺🇸 San Antonio, Texas, United States

University Center for Community Health; 🇺🇸 San Antonio, Texas, United States