The Diabetes Prevention Program is recognized by the Centers for Disease Control and Prevention (CDC) as an effective way to prevent or delay type 2 diabetes among individuals with prediabetes or high type 2 diabetes risk. The DPP has been shown to lower 3-year diabetes risk by over 50%. Furthermore, it is cost-effective, with an estimated a $1,595 return on investment within 5 years .
The DPP can clearly improve health outcomes and address the $327 billion annual burden of diabetes in the U.S. Plus, over 86 million – 1 in 3, American adults have prediabetes, and most of those could likely benefit from the program. Why, then, is the DPP not ubiquitous? A shortage of lifestyle coaches can be a barrier to increased participation rates nationwide.
The numbers are not definitive, but the conclusion seems clear: there are simply not enough lifestyle coaches to reach the 86 million Americans who are prediabetic. There is variation in aspects such as the number of participants per DPP class and the number of classes offered per site or organization, but here are some of our calculations.
The CDC says that “there are thousands of trained lifestyle coaches nationwide.” Let’s assume that the CDC means 10,000 coaches. With 86 million Americans with prediabetes, each lifestyle coach would need to reach an average of 8,600 participants in their DPP programs – which, as a reminder, include a minimum of 22 sessions over the course of the year.
Doing the calculations, assuming an average class capacity of 20 participants… Each lifestyle coach’s 8,600 participants would be split into 430 classes. To hit those 22 annual sessions, each coach would need to conduct 9,460 classes. At an hour per class, that adds up to each coach working nonstop (no sleeping or eating) for 394 days per year to reach their allotted participants. Oh, and a year has only 365 days!
That is right: with these numbers, it would be physically impossible to bring a DPP to all prediabetics.
Going back to an estimate of 10,000 lifestyle coaches, let us assume, generously and unrealistically, that they teach DPP sessions full-time (and have no other professional duties), spend two hours per session preparing and teaching, and have 20 participants per class. Using the standard full-time year of 2,080 hours, that would allow for 47 separate 22-session courses, serving a total of 940 participants. That number is not even 11% of the number they would need to reach to serve the entire population of prediabetes patients.
Approaching the estimates from a different direction, let’s take a look at a large study examining the nationwide effects of the DPP. The study included data from 435 DPP organizations that served 35,844 participants, or an average of 82.4 participants per site . (The estimate of 82.4 participants per site seems reasonable when checked against a different review article looking at sites with an average of 70.9 participants per site ).
Extrapolating that ratio to the approximately 1,800 organizations that currently have CDC DPP recognition, there would be an estimated 148,320 prediabetic patients currently participating in the DPP. That value is a measly 0.17% of the 86 million adults with prediabetes. That means fewer than 2 out of every 1,000 individuals with prediabetes are benefiting from the DPP!
A reason for the inadequate number of DPP lifestyle coaches may trouble obtaining certification. An individual must go through a recognized training program to become a DPP lifestyle coach. The CDC has signed a memorandum of understanding (MOU) with 9 organizations that offer online or on-site training . This number of organizations may seem like a small number to serve the entire country, and it seems even more inadequate when considering limitation such as:
A digital DPP can likely address the shortfalls in numbers of DPP lifestyle coaches by dramatically increasing scalability. A digital DPP can serve vastly greater numbers of prediabetes patients and reduce the ratio of participants to coaches that are required for effective education and lifestyle change.
A mobile-based DPP that is delivered digitally is able to augment the insights and monitoring of trained health coaches, and as such requires far fewer lifestyle coaches for virtually unlimited numbers of participants.
Other reasons why a well-chosen digital DPP can improve DPP adoption nationwide include:
Regardless of which estimates you use, it seems clear that there is a shortfall of trained lifestyle coaches. Also clear is that a digital DPP can be a simple, quick, and effective solution. A digital DPP has immense scalability because it can get more mileage from each trained lifestyle coach to serve more participants, and it is easy for organizations to implement regardless of their expertise in this area. Shouldn’t you be looking into digital solutions?
With tens of thousands of participants, Lark’s DPP is the most scalable and the fastest growing, and has achieved Full CDC Recognition. It is based on a combination of A.I and human coaches and nutritionists, plus a connected device universe to track participant data in real time. The A.I behavior change is built with Cognitive Behavioral Therapy led by the former head of the Altruism lab at Stanford University. The ability to replicate human coaches for routine interventions, nudges, and assessments, while involving human coaches for more significant interventions has led to scalable positive outcomes that can make a real impact for 86 million prediabetics.
August 31, 2018 Outcomes Update