Comparative Effectiveness of Patient-Driven versus Standardized Diabetes Shared Medical Appointments: A Pragmatic Cluster Randomized Trial.

BACKGROUND: Diabetes self-management education and support can be effectively and efficiently delivered in primary care in the form of shared medical appointments (SMAs). Comparative effectiveness of SMA delivery features such as topic choice, multi-disciplinary care teams, and peer mentor involvement is not known. OBJECTIVE: To compare effects of standardized and patient-driven models of diabetes SMAs on patient-level diabetes outcomes. DESIGN: Pragmatic cluster randomized trial. PARTICIPANTS: A total of 1060 adults with type 2 diabetes in 22 primary care practices. INTERVENTIONS: Practice personnel delivered the 6-session Targeted Training in Illness Management (TTIM) curriculum using either standardized (set content delivered by a health educator) or patient-driven SMAs (patient-selected topic order delivered by health educators, behavioral health providers [BHPs], and peer mentors). MAIN MEASURES: Outcomes included self-reported diabetes distress and diabetes self-care behaviors from baseline and follow-up surveys (assessed at 1st and final SMA session), and HbA1c, BMI, and blood pressure from electronic health records. Analyses used descriptive statistics, linear regression, and linear mixed models. KEY RESULTS: Both standardized and patient-driven SMAs effectively improved diabetes distress, self-care behaviors, BMI (- 0.29 on average), and HbA1c (- 0.45% (mmol/mol) on average, 8.3 to 7.8%). Controlling for covariates, there was a small, significant effect of condition on overall diabetes distress in favor of standardized SMAs (F(1,841) = 4.3, p = .04), attributable to significant effects of condition on emotion and regimen distress subscales. There was a small, significant effect of condition on diastolic blood pressure in favor of standardized SMAs (F(1,5199) = 4.50, p = .03). There were no other differences between conditions. CONCLUSIONS: Both SMA models using the TTIM curriculum yielded significant improvement in diabetes distress, self-care, and HbA1c. Patient-driven diabetes SMAs involving BHPs and peer mentors and topic selection did not lead to better clinical or patient-reported outcomes than standardized diabetes SMAs facilitated by a health educator following a set topic order. NIH TRIAL REGISTRY NUMBER: NCT03590041.

A virtual recruitment protocol promotes enrollment of underrepresented groups in a diabetes prevention trial.

Strategies are needed to ensure greater participation of underrepresented groups in diabetes research. We examined the impact of a remote study protocol on enrollment in diabetes research, specifically the Pre-NDPP clinical trial. Recruitment was conducted among 2807 diverse patients in a safety-net healthcare system. Results indicated three-fold greater odds of enrolling in remote versus in-person protocols (AOR 2.90; P < 0.001 [95% CI 2.29-3.67]). Priority populations with significantly higher enrollment included Latinx and Black individuals, Spanish speakers, and individuals who had Medicaid or were uninsured. A remote study design may promote overall recruitment into clinical trials, while effectively supporting enrollment of underrepresented groups.

Enhancing access and impact of the Medicare Diabetes Prevention Program using telehealth: a narrative review.

Background and Objective: Over 26 million older adults in the United States (US) have prediabetes, which is often a precursor to type 2 diabetes. The Medicare Diabetes Prevention Program (MDPP) is an evidence-based, lifestyle program for older-adult Medicare beneficiaries to prevent progression to diabetes. However, the MDPP has been drastically underutilized. Telehealth delivery may be a promising strategy to increase the reach and impact of the MDPP, including for underserved populations. The objective of this narrative review is to explore the role of telehealth on the accessibility and effectiveness of diabetes prevention programs (DPPs) for older adults. Methods: We searched the online databases of MEDLINE, APA PsycInfo, CINAHL, and Academic Search Elite for studies that used telehealth to deliver DPPs to older adults through distance learning, i.e., live program delivery where participants join via phone- or video-conferencing. Relevant information from policy documents and related publications was also included. Key Content and Findings: Three themes emerged from the literature on telehealth delivery of DPPs for older adults (I) clinical effectiveness for weight loss, (II) feasibility and acceptability of this format; and (III) policy considerations to support greater public health impact. There is a growing body of recent evidence to suggest that older adults achieve a clinically meaningful amount of weight loss from participation in telehealth DPPs. The literature suggests that telehealth program delivery is feasible, and older adults find it acceptable, with some specific accommodations. Effectiveness and acceptability of telehealth interventions were also noted for older adults from rural, ethnically-diverse, and low-income groups. Policy considerations include adjustments in rulemaking by the Centers for Medicare and Medicaid Services (CMS) to allow MDPP delivery via telehealth using distance learning, along with sufficient reimbursement rates. Conclusions: The evidence indicates that delivery of the MDPP via telehealth is beneficial for increasing program reach and impact, including among underserved groups, as well as providing social support for older participants. Scalable delivery of the MDPP via telehealth is essential to make a national, population-level impact for older adults with prediabetes who receive Medicare benefits.

A Multi-Method Study of Patient Reach and Attendance in a Pragmatic Trial of Diabetes Shared Medical Appointments.

Shared medical appointments (SMAs) are an evidence-based approach to diabetes care in primary care settings, yet practices can struggle to ensure participation, especially among racial and ethnic minority and low-income patients. We conducted a multimethod evaluation of reach and attendance in the Invested in Diabetes study of the comparative effectiveness of two SMA delivery models (standardized and patient-driven) in two practice settings (federally qualified health centers [FQHCs] and clinics serving more commercially insured patients). Through this study, 22 practices reached 6.2% of patients with diabetes through SMAs over 3 years, with good attendance for both practice types and both SMA delivery models. FQHCs were especially successful at enrolling underserved populations and improved attendance with virtual SMAs.

A pre-conception clinical trial to reduce intergenerational obesity and diabetes risks: The NDPP-NextGen trial protocol.

BACKGROUND: Intrauterine exposure to maternal overweight/obesity or diabetes transmits risks to offspring, perpetuating a disease cycle across generations. Prenatal interventions to reduce maternal weight or dysglycemia have limited impact, while postpartum interventions can alter the intrauterine environment only if child-bearing continues. Efficacious preconception interventions are needed, especially for underserved populations, and with the potential to be scaled up sustainably. Research is also needed to assess intervention effects at conception, throughout pregnancy, and among offspring. METHODS: This two-arm, parallel randomized clinical trial will include 360 biological females with overweight/obesity and moderate-to-high likelihood of pregnancy within 24 months. Participants will be randomized 1:1 to a yearlong pre-conception lifestyle intervention based on the National Diabetes Prevention Program (NDPP-NextGen) or usual care. Data collection will occur at enrollment (before conception), post-conception (<8 weeks gestation), late pregnancy (28-32 weeks gestation), and delivery (before discharge) for participants who become pregnant within 24 months of enrollment. Main outcomes are post-conception body mass index (<8 weeks gestation; primary outcome), post-conception fasting glucose (<8 weeks gestation; secondary outcome), and neonatal adiposity (<2 days post-birth). Additional clinical, behavioral, perinatal and offspring data will be collected, and biospecimens (blood, urine, stool, cord blood) will be banked for future ancillary studies. CONCLUSION: This clinical trial will evaluate an intervention model (NDPP-NextGen) with potential to improve maternal health among the >50% of US females with overweight/obesity or diabetes risks in pregnancy. If successful, it can be scaled among >1800 organizations delivering NDPP in the United States to benefit the health of future generations.

Stakeholder analysis: Medicare Diabetes Prevention Program awareness and implementation.

OBJECTIVES: The Medicare Diabetes Prevention Program (MDPP) provides unprecedented coverage of a behavior change program for older adult Medicare beneficiaries, but uptake has been extremely limited; only 1.5 sites deliver the program per 100,000 beneficiaries nationwide. Inadequate reach and utilization of the MDPP threaten its long-term success; thus, the purpose of this project was to determine facilitators and barriers to MDPP implementation and use in western Pennsylvania. STUDY DESIGN: We conducted a qualitative stakeholder analysis project with suppliers of the MDPP and health care providers. METHODS: Using an implementation science framework, we conducted individual interviews with 5 program suppliers and 3 health care providers (N = 8) to determine their perspectives on positive aspects of the program and reasons for MDPP unavailability and lack of use. Data were analyzed using Thorne and colleagues' approach of interpretive description. RESULTS: Three main themes emerged: (1) facilitators and attributes of the MDPP, (2) barriers to MDPP implementation, and (3) suggestions for improvement. Facilitators of the program included technical support and webinars from Medicare to assist with the application process. Barriers such as financial reimbursement constraints and a lack of a systematic referral process were noted. Stakeholders suggested refinements to participant eligibility and performance-based payments, a seamless method of flagging and referring patients through the electronic health record, and ongoing virtual program delivery options. CONCLUSIONS: Findings from this project can be used to improve implementation of the MDPP in western Pennsylvania, support Medicare policy refinement, and inform implementation research to promote broader adoption of the MDPP across the United States.

Reducing Maternal Obesity and Diabetes Risks Prior to Conception with the National Diabetes Prevention Program.

INTRODUCTION: Intrauterine exposure to maternal obesity and hyperglycemia greatly increases offspring health risks. Scalable lifestyle interventions to lower weight and glycemia prior to conception are needed, but have been understudied, especially in diverse and low-income women with disproportionately high risks of negative maternal-child outcomes. The objective of this report is to provide initial evidence of the National Diabetes Prevention Program's (NDPP) effects on maternal-child outcomes in diverse, low-income women and their offspring. METHODS: The yearlong NDPP was delivered in a safety net healthcare system to 1,569 participants from 2013 to 2019. Using medical records, we evaluated outcomes for women < 40 years who became pregnant and delivered after attending the NDPP for ≥ 1 month (n = 32), as compared to a usual care group of women < 40 years (n = 26) who were initially eligible for the NDPP but were excluded due to pregnancy at enrollment. RESULTS: Most women in either group were Latinx, had Medicaid or were uninsured, and had obesity at baseline. The mean difference in BMI change from baseline to conception was - 1.8 ± 0.6 kg/m2 (p = 0.002) for NDPP versus usual care. Fewer NDPP participants had obesity at conception (56.7% vs. 88.0%, p = 0.011) and hyperglycemia in early pregnancy (4.0% vs. 25.0%; p = 0.020) than usual care. No other differences were statistically significant, yet nearly all outcomes favored the NDPP. Covariate-adjusted results were consistent, except the difference in frequency of obesity at conception was no longer significant (p = 0.132). DISCUSSION: Results provide preliminary evidence that the NDPP may support a reduction in peri-conceptional obesity/diabetes risks among diverse and low-income women.

SIGNIFICANCE: Scalable lifestyle interventions to lower weight and glycemia prior to conception are needed, especially to support diverse and low-income women with disproportionately high risks of negative maternal-child outcomes. This report presents initial evidence of the National Diabetes Prevention Program?s effects on maternal-child outcomes in diverse, low-income women and their offspring. Results encouragingly suggest that the program can reduce peri-conceptional obesity and glycemia, and may be a resource to help break the cycle of disease across generations.

Effectiveness of the National Diabetes Prevention Program After Gestational Diabetes.

INTRODUCTION: Women with previous gestational diabetes are at high risk of developing Type 2 diabetes. The National Diabetes Prevention Program (NDPP) is a widely disseminated lifestyle intervention to prevent Type 2 diabetes. Although NDPP programs are open to adults of any age, participants are usually older adults. Effectiveness among younger women with previous gestational diabetes is largely unknown. METHODS: The NDPP was delivered by lifestyle coaches in a large network of Federally Qualified Health Centers. Reach, retention, physical activity, and weight loss outcomes were compared between women aged <40 years with previous gestational diabetes and all other participants. Data were collected from 2013 to 2019 and analyzed in 2022. RESULTS: Among 2,865 enrollees who agreed to start the yearlong NDPP, 63.3% were Latinx, 18.8% were non-Latinx Black, and 16.4% were non-Latinx White. Younger women with previous gestational diabetes represented <4% (n=107) of participants. There was no significant difference in the frequency of attending ≥1 NDPP session between these women and all other participants (37.4% vs 44.6%; p=0.146). However, among those attending ≥1 session (n=1,265), younger women with previous gestational diabetes attended more (11.27 ± 1.27 vs 8.50 ± 0.22 sessions, p=0.021) and had greater weight loss (3.04% ± 0.59 vs. 1.49% ± 0.11, p=0.010) in covariate-adjusted models than other participants. CONCLUSIONS: Diverse younger women with previous gestational diabetes attending the NDPP had one third greater attendance and twice as much weight loss as other NDPP participants but represented a much smaller proportion of enrollees. Thus, the NDPP appears to be a beneficial but underutilized resource for this high-risk population.

Two decades of diabetes prevention efforts: A call to innovate and revitalize our approach to lifestyle change.

The impact of global diabetes prevention efforts has been modest despite the promise of landmark diabetes prevention trials nearly twenty years ago. While national and regional initiatives show potential, challenges remain to adapt large-scale strategies in the real-world that fits individuals and their communities. Additionally, the sedentary lifestyle changes during the COVID-19 pandemic and guidelines that now call for earlier screening (e.g., US Preventative Task Force) will increase the pool of eligible adults worldwide. Thus, a more adaptable, person-centered approach that expands the current toolkit is urgently needed to innovate and revitalize our approach to diabetes prevention. This review identifies key priorities to optimize the population-level delivery of diabetes prevention based on a consensus-based evaluation of the current evidence among experts in global translational programs; key priorities identified include (1) participant eligibility, (2) intervention intensity, (3) delivery components, (4) behavioral economics, (5) technology, and (6) the role of pharmacotherapy. We offer a conceptual framework for a broader, person-centered approach to better address an individual's risk, readiness, barriers, and digital competency.

Use and Impact of Type 2 Diabetes Prevention Interventions.

INTRODUCTION: RCTs have found that type 2 diabetes can be prevented among high-risk individuals by metformin medication and evidence-based lifestyle change programs. The purpose of this study is to estimate the use of interventions to prevent type 2 diabetes in real-world clinical practice settings and determine the impact on diabetes-related clinical outcomes. METHODS: The analysis performed in 2020 used 2010‒2018 electronic health record data from 69,434 patients aged ≥18 years at high risk for type 2 diabetes in 2 health systems. The use and impact of prescribed metformin, lifestyle change program, bariatric surgery, and combinations of the 3 were examined. A subanalysis was performed to examine uptake and retention among patients referred to the National Diabetes Prevention Program. RESULTS: Mean HbA1c values declined from before to after intervention for patients who were prescribed metformin (-0.067%; p<0.001) or had bariatric surgery (-0.318%; p<0.001). Among patients referred to the National Diabetes Prevention Program lifestyle change program, the type 2 diabetes postintervention incidence proportion was 14.0% for nonattendees, 12.8% for some attendance, and 7.5% for those who attended ≥4 sessions (p<0.001). Among referred patients to the National Diabetes Prevention Program lifestyle change program, uptake was low (13% for 1‒3 sessions, 15% for ≥4 sessions), especially among males and Hispanic patients. CONCLUSIONS: Findings suggest that metformin and bariatric surgery may improve HbA1c levels and that participation in the National Diabetes Prevention Program may reduce type 2 diabetes incidence. Efforts to increase the use of these interventions may have positive impacts on diabetes-related health outcomes.

Barriers to participation and lifestyle change among lower versus higher income participants in the National Diabetes Prevention Program: lifestyle coach perspectives.

Individuals from socioeconomically disadvantaged groups have lesser participation and success in the National Diabetes Prevention Program (NDPP). Barriers to NDPP participation and lifestyle change were examined from the perspective of Lifestyle Coaches serving lower versus higher income participants. Lifestyle Coaches (n = 211) who serve lower income (n = 82) or higher income (n = 129) participants reported on observed barriers to NDPP participation and lifestyle change and ranked the three most significant barriers to (a) NDPP participation and (b) lifestyle change. Group differences in number/type of barriers were examined using t-tests and chi-square analyses, and ranking differences were examined using multilevel cumulative logit models. Lifestyle Coaches of lower income (versus higher income) participants reported two additional barriers on average. Ranked barriers to participation were similar between groups, and notably included physical/emotional barriers. However, for lifestyle change, those serving lower income groups were more likely to rank lack of access to healthy grocery stores, but less likely to rank low motivation and lack of family support. Lifestyle Coaches of lower income participants were less likely to rank long wait period prior to enrollment as the most significant barrier to participation, and to rank lack of time off from work as the most significant barrier to lifestyle change. Despite more barriers observed among lower versus higher income participants, overlap in the most significant barriers highlights the potential utility of widely addressing common barriers among NDPP participants. In particular, physical and emotional barriers have been overlooked, yet deserve greater attention in future research and practice.

The National Diabetes Prevention Program (NDPP) has less successfully reached and changed the lifestyles of lower income (versus higher income) adults in the USA who are at high risk for type 2 diabetes. In a nationwide online survey, we asked Lifestyle Coaches who deliver the NDPP to identify up to 37 potential barriers to participation and success that they had observed among their participants. We then compared the number, type, and rankings of the most significant barriers to participation and success in the NDPP from the perspective of Lifestyle Coaches estimating the majority of their participants had lower versus higher incomes. Lifestyle Coaches delivering the NDPP to lower income participants reported an average of two additional barriers to participation and success than those delivering the program to higher income participants. The barriers ranked among the most significant to NDPP participation and lifestyle change were generally similar among Lifestyle Coaches working with lower versus higher income participants. Top-ranked barriers included physical/emotional symptoms (e.g., anxiety, depression) as well as barriers previously reported in studies focused on NDPP participants. It is critical that barriers be carefully evaluated and addressed to improve the nationwide impact of the NDPP.

Promises and Pitfalls of Dyads in the National Diabetes Prevention Program: Lifestyle Coach Perspectives.

PURPOSE: To describe Lifestyle Coach perceptions of dyads (i.e., family members and/or friends) in the National Diabetes Prevention Program (NDPP). DESIGN: Qualitative evaluation of cross-sectional survey responses. SETTING: Online. PARTICIPANTS: Lifestyle Coaches (n=253) with experience teaching at least one in-person year-long NDPP cohort at a CDC-recognized organization. MEASURES: Survey included items on background and experience with dyadic approach, as well as open-ended items on the benefits and challenges observed when working with dyads in the NDPP. ANALYSIS: Lifestyle Coach background and experience were analyzed descriptively in SPSS. Open-ended responses were content coded in ATLAS.ti using qualitative description, and then grouped into categories. RESULTS: Most Lifestyle Coaches (n=210; 83.0%) reported experience delivering the NDPP to dyads. Benefits of a dyadic approach included having a partner in lifestyle change, superior outcomes and increased engagement, and positive "ripple effects." Challenges included difficult relationship dynamics, differences between dyad members, negative "ripple effects," and logistics. CONCLUSION: Lifestyle Coaches described a number of benefits, as well as some challenges, with a dyadic approach to the NDPP. Given the concordance between close others in lifestyle and other risk factors for type 2 diabetes, utilizing a dyadic approach in the NDPP has the potential to increase engagement, improve outcomes, and extend the reach of the program.

Reach and Effectiveness of Diabetes Self-Management Education and Support in a Network of Federally Qualified Health Centers.

Diabetes self-management education and support (DSMES) is an evidence-based intervention to improve diabetes-related outcomes. Access to DSMES is limited for diverse and low-income groups, despite greater need for services to address health disparities. Providing DSMES in federally qualified health centers (FQHCs) may increase reach for priority populations, and further study is needed to evaluate this delivery model. This report examines program effectiveness, including outcomes by race/ethnicity and Medicaid status, among 1,247 enrollees in FQHC-based DSMES. There was substantial glycated hemoglobin (A1c) improvement overall (-0.98%) among a diverse, majority-Medicaid population. However, Medicaid beneficiaries were approximately half as likely to attend as other enrollees (p<.001), while Latinx and non-Latinx Black participants attended fewer sessions (p=.008 and p=.040, respectively). Additionally, Medicaid beneficiaries experienced less A1c improvement than others (p=.040). Findings are promising that FQHC-based delivery can increase access to high-quality DSMES, although further effort appears needed to ensure optimal outcomes for all.

Protocol refinement for a diabetes pragmatic trial using the PRECIS-2 framework.

BACKGROUND: This report describes how we refined a protocol for a pragmatic comparative effectiveness study of two models of an evidence-based diabetes shared medical appointment intervention and used the PRECIS-2 rating system to evaluate these adaptations. METHODS: We report primary data collected between June and August 2019, and protocol refinements completed between 2018 and 2020. Twenty-two members of the study team collaborated in protocol refinement and completed the PRECIS-2 ratings of study pragmatism. We discuss study design refinements made to achieve the desired level of pragmatism vs. experimental control for each of the nine PRECIS-2 dimensions. Study team members received training on PRECIS-2 scoring and were asked to rate the study protocol on the nine PRECIS-2 dimensions. Ratings were compared using descriptive statistics. RESULTS: In general, the PRECIS-2 ratings revealed high levels of pragmatism, but somewhat less pragmatic ratings on the categories of Delivery and Organization (costs and resources). This variation was purposeful, and we provide the rationale for and steps taken to obtain the targeted level of pragmatism on each PRECIS-2 dimension, as well as detail design changes made to a) make the design more pragmatic and b) address COVID-19 issues. There was general agreement among team members and across different types of stakeholders on PRECIS-2 ratings. CONCLUSIONS: We discuss lessons learned from use of PRECIS-2 and experiences in refining the study to be maximally pragmatic on some dimensions and less so on other dimensions. This paper expands on prior research by describing actions to achieve higher levels of pragmatism and revise our protocol fit to the changed context. We make recommendations for future use of PRECIS-2 to help address changing context and other strategies for the planning of and transparent reporting on pragmatic research and comparative effectiveness research. TRIAL REGISTRATION: Clinicaltrials.gov Registration ID: NCT03590041 .

Patient-Centered Goal-Setting in the National Diabetes Prevention Program: A Pilot Study.

OBJECTIVE: Difficulty achieving preset goals (e.g., ≥5% weight loss, ≥150 min of weekly physical activity) in the yearlong National Diabetes Prevention Program (NDPP) can prompt dropout and diminish benefits. We piloted a more patient-centered NDPP adaptation (NDPP-Flex) that promotes a variety of attainable and individually tailored goals to reduce diabetes risks, along with flexibility to adjust goals each week as needed. RESEARCH DESIGN AND METHODS: Retention, physical activity, weight, and glycated hemoglobin (HbA1c) were evaluated among diverse participants with diabetes risks who received our pilot of NDPP-Flex beginning in January and July 2018 (n = 95), with a planned comparison with standard NDPP delivery in preceding cohorts that launched between September 2016 and October 2017 (n = 245). Both the standard NDPP and NDPP-Flex interventions were 1 year in duration and implemented in phases (i.e., nonrandomized). RESULTS: Average adjusted retention (e.g., 158.90 ± 15.20 vs. 166.71 ± 9.38 days; P = 0.674), physical activity (157.97 ± 11.91 vs. 175.64 ± 7.54 weekly min; P = 0.231), and weight loss (1.46 ± 0.38% vs. 1.90 ± 0.24%; P = 0.396) were similar between NDPP-Flex versus standard NDPP. However, NDPP-Flex participants had greater HbA1c reduction on average (0.22 ± 0.05% vs. 0.06 ± 0.03%; P = 0.018) and were more likely to have normoglycemia at follow-up (odds ratio 4.62; P = 0.013 [95% CI 1.38-15.50]) than participants in the standard NDPP. CONCLUSIONS: An adapted, more patient-centered NDPP that focuses on flexible, self-selected goals may be a promising strategy to improve glycemia even in the absence of substantial weight loss.

Reducing intergenerational obesity and diabetes risk.

To address the intergenerational transmission of obesity and diabetes, strategies promoting the health of women of reproductive age appear to be urgently needed. In this narrative review, we summarise what has been learned from many prenatal clinical trials, discuss the emerging evidence from preconception clinical trials and highlight persistent gaps and critical future directions. Most trials tested prenatal interventions that resulted in a limited gestational weight gain of ~1 kg and reduced gestational diabetes by 20-30%. These interventions also reduced macrosomia by 20-40% but had little-to-no impact on other offspring outcomes at birth or beyond. Far fewer trials tested preconception interventions, with almost all designed to improve conception or live-birth rates in overweight or obese women with infertility rather than reduce intergenerational risks in diverse populations. Preconception trials have successfully reduced weight by 3-9 kg and improved markers of glucose homeostasis and insulin resistance by the end of the intervention but whether effects were sustained to conception is unclear. Very few studies have reported offspring outcomes at birth and beyond, with no evidence thus far of beneficial effects on offspring obesity or diabetes risks. Further efforts to develop effective and scalable strategies to reduce risk of obesity and diabetes before conception should be prioritised, especially for diverse and under-resourced populations at disparately high risk of obesity and diabetes. Future clinical trials should include interventions with high potential for dissemination, diverse populations, thorough maternal phenotyping from enrolment through to conception and pregnancy, and rigorous assessment of offspring obesity and diabetes risks from birth onwards, including into the third generation.

Participation and weight loss in online National Diabetes Prevention Programs: a comparison of age and gender subgroups.

Early onset diabetes has adverse transgenerational effects, yet in-person National Diabetes Prevention Programs (NDPPs) have low reach among adults of peak reproductive age. We examined participation and weight loss with online NDPPs for younger versus older adults. Solera Health, Inc., collected data from 12,966 adults who enrolled in a yearlong online NDPP from 2015 to 2018. We used general linear models and logistic regression to assess differences between younger and older adults (<45 vs. ≥45 years) in session initiation (logging in), session completion (activities approximating intensity of in-person classes), and weight loss, overall and according to engagement thresholds. Almost all (N = 12,497, 96%) individuals who enrolled initiated ≥1 session(s), but fewer (N = 2,408, 19%) completed ≥4 sessions over ≥9 months, achieving 4.5% weight loss on average. Among all enrollees with ≥2 weights (N = 10,161), younger men and women lost less weight (1.8% and 1.7%, respectively) than older men (3.3%) and women (2.7%; all p < .05). Among all enrollees who completed ≥4 sessions over ≥9 months, weight loss did not differ between older men (4.3%), older women (4.0%), and younger men (3.5%), but younger women achieved less weight loss (3.0%) than older adults (all p < .001). Online programming supports NDPP reach and weight loss, although younger adults completed fewer sessions and young women achieved less weight loss than older adults. Efforts to increase ongoing engagement among younger adults are needed to prevent early onset of diabetes and adverse transgenerational effects.