Increasing Treatment for Obesity Among Underserved Populations

This study will use a Sequential Multiple Assignment Randomized Trial (SMART) Design, which will allow participants to address questions like those of traditional factorial design and assess dynamic treatment regimens to inform the development of adaptive interventions. An adaptive intervention contains a sequence of individually tailored decision rules that specify the intensity or type of intervention at critical points in the delivery of care. Modifying intensity or type of intervention over time can improve outcomes if an individual is not responding, or may reduce costs and patient burden if more resource intensive treatment is not necessary. As such, the proposed SMART design informs the development of adaptive and stepped care interventions, and the reduction in patient burden is particularly important to ensure that the interventions are as patient centered as possible.

The first randomization is a patient-level randomization to text messaging (single) versus text messaging (multiple) among eligible patients. The second randomization is a patient-level randomization to Motivation And Problem Solving (MAPS) coaching vs. no MAPS among the remaining patients in the text message conditions who do not enroll in the EBI. The primary outcome for this study is enrollment in an online EBI for obesity. IncentaHEALTH provides EBIs for obesity to the University of Utah Health system, either the Diabetes Prevention Program or Lifestyle Change Program. Their online Diabetes Prevention Program (DPP) is fully recognized by CDC.

Study Design:

To identify the cohort for the intervention, patient data will be extracted from the University of Utah EHR. Data fields will include variables such as age, gender, body mass index, pregnancy status, medical codes (e.g., ICD-10 for Type 1 and Type 2 diabetes), patient demographics (e.g., zip code, insurance status, preferred language, race/ethnicity); as well as contact information for text messaging and patient navigation. Patients who fit within the inclusion/exclusion criteria will be randomly selected and assigned to the conditions described below.

This study will take place in two Stages spanning a 6-12 month period. In Stage 1 (0 - 12 weeks), participants will be randomized to one of two conditions: Text Messaging 1 (Single text; hereafter referred to as TM1), or Text Messaging Plus (Multiple texts; hereafter referred to as TM+). The study team will use a 1:1 randomization ratio (TM1: TM+).

Prior to being contacted via text message, participants in the TM1 and TM+ conditions will receive an e-mail informing participants that they will be receiving communications from The University of Utah Health about the availability of a healthy lifestyle program. The e-mail will provide patients with information about how they can opt-out if they do not wish to receive these communications. Patients who do not have a valid e-mail address on file will be contacted via mail with instructions regarding how to opt-out.

Patients in the TM1 condition will receive one HIPAA-compliant bidirectional text message with the option to reply "yes" or opt out. The text will include a brief motivational message including information about DPP eligibility and the opportunity to enroll. Patients who reply "yes" will be contacted by IncentaHEALTH to enroll in the DPP or a similar lifestyle change program, depending on patient eligibility. Patients who enroll or opt out of receiving text messages will not be contacted again.

Patients in the TM+ condition will receive a HIPAA-compliant bidirectional text message weekly for the first 2 weeks and then every three weeks through week 12. Patients will receive text messages until they opt-out or reply "yes" to enroll. The text will include a brief motivational message including information about DPP eligibility and opportunity to enroll. Patients who reply "yes" will be contacted by IncentaHEALTH to enroll in the DPP or a similar lifestyle change program, depending on patient eligibility. Patients who enroll or opt out of receiving text messages will not be contacted again.

In Stage 2 of the study (weeks 13-24), patients will be randomized as follows:

Patients randomized to the TM1 condition in Stage 1 who did not respond to the single text message by 12 weeks (i.e., enroll in the EBI or opt out) will either be randomized to receive Motivational And Problem Solving (MAPS) counseling (TM1 \& MAPS), or will not be contacted again (TM1 cont'd). Participants randomized to TM1 \& MAPS will receive two MAPS calls during Stage 2.

Patients randomized to the TM+ condition in Stage 1 who did not respond to the text messages by 12 weeks (i.e., enroll in the EBI or opt out) will be randomized either to receive continued (monthly) text messages and MAPS counseling (TM+ \& MAPS) or continued (monthly) text messages only (TM+ cont'd). Participants randomized to TM+ \& MAPS will receive two MAPS calls during Stage 2.

Prior to being contacted by the MAPS counselors, participants randomized to the MAPS conditions in Stage 2 will receive one text message informing the participants that a MAPS counselor will call the participant about enrolling in a lifestyle change program. This text message will also provide participants with an opportunity to opt out from having a MAPS counselor call the participants.

Text Messaging Intervention

The study team will send bidirectional texts to patients. Text messages have been designed by the research team in consultation with the current research literature. All text messages will be sent using U Health's HIPAA compliant text messaging service, which has previously been utilized by our team. The text messaging service will retrieve the patient cohort from the study database to send the TMs to the patients. Every text message will include the option to opt out to cease receiving text messages at any time. Patients are routinely contacted by clinics via phone calls, emails, and text messages; therefore the text messages are not beyond the scope of routine care and correspondence.

Text messages will include a motivational message, the Diabetes Prevention Program phone number, and a simple two-touch response that directly connects interested patients to the Diabetes Prevention Program. Patients in the TM+ condition will be randomized to one of three types of motivational messages: 1) autonomy supportive motivational messaging; 2) directive motivational messaging; and 3) a combination of autonomy supportive and motivational messaging. Patients in the TM1 condition will be randomized to receive either an autonomy supportive message, or a directive motivational message. The two types of messages do not fundamentally alter the intervention and this will support exploratory analyses only.

Motivation And Problem Solving (MAPS) Intervention

MAPS is an empirically validated proactive coaching approach used to address barriers and motivate participants to engage in EBIs. Trained MAPS counselors will directly contact patients via secure telephone line to assess their motivation and provide counseling related to enrolling in the EBI. As with the text messages, patients can opt out of MAPS counseling at any time. University of Utah Health currently employs patient navigators and community health workers to perform patient navigation for various reasons (e.g., coordination of care, resource referral); therefore, patient navigation is not beyond the standard of care for patients.

IncentaHEALTH EBIs for obesity

IncentaHEALTH will triage interested patients into either online DPP or lifestyle change using a CDC risk assessment tool. Their lifestyle change program uses the same general components as the DPP. Both programs are designed to increase intake of fruits, vegetables, lean protein, and complex carbohydrates while monitoring portion size. Physical activity recommendations include cardiovascular and strength training, with a goal of approximately 30 minutes 5-6 days/week. Both are offered in English and Spanish, based on social cognitive theory, and provide personalized health coaching. Both include a website, Bluetooth wireless scale for weight monitoring, daily email/text message support, video exercise plans, customized meal plans, grocery lists, and incorporate skill building, social accountability, and reinforcement. Participants have unlimited online access to Health Coaches, who have at least a Bachelor's degree and certifications in personal training, nutrition, or wellness.