Umbrella Review Finds Digital Health Effective but Not Superior to Standard Therapies

In an umbrella review synthesizing 232 publications and 1,133 unique outcomes across 559,792 participants, digital health interventions proved effective compared to inactive controls but showed no superiority over standard therapies across multiple clinical conditions. The investigated outcomes spanned twelve condition categories, including cardiovascular disease, type 2 diabetes, stroke, Parkinson’s disease, mental health, musculoskeletal conditions, postoperative care, maternal and neonatal health, and care for older adults. While digital health interventions demonstrated clear clinical efficacy against inactive comparators, their benefits generally matched rather than exceeded standard care, with effects varying across specific clinical outcomes.

When evaluated against inactive controls such as usual care, attention placebos, or waitlists, multiple digital modalities produced statistically significant benefits supported by high-certainty evidence. Telemonitoring reduced systolic blood pressure in hypertension, demonstrating an equivalent Hedges’ g of 0.55 (95% CI 0.31–0.78). Additional high-certainty evidence confirmed that telephone-based interventions reduced diastolic blood pressure (Hedges’ g 0.17, 95% CI 0.09–0.24), Internet-based cognitive behavioural therapy reduced depression in insomnia (Hedges’ g 0.38, 95% CI 0.23–0.54), and telemedicine interventions reduced weight in type 2 diabetes (Hedges’ g 0.12, 95% CI 0.06–0.17).

In direct comparisons with standard therapies such as face-to-face treatments, digital interventions largely showed no superiority, though an exception emerged in stroke rehabilitation. Specific virtual reality interventions improved upper limb function following stroke compared to standard therapy, achieving an effect size of 0.23 (95% CI 0.06–0.40) supported by high-certainty evidence. In contrast, other high-certainty findings against standard therapies showed no statistically significant differences in hospitalisation, all-cause mortality, or stroke among pacemaker patients receiving telemonitoring; synchronous virtual consultations showed no difference in HbA1c levels for type 2 diabetes; and tele-exercise showed no difference in physical function for knee osteoarthritis.

The umbrella review protocol was registered under PROSPERO identifier CRD42025645564 and systematically searched six databases from inception through April 2025 for meta-analyses of randomised controlled trials. Methodological quality across the 232 included publications was evaluated using AMSTAR 2, rating 37 percent as high quality, 12 percent moderate, 32 percent low, and 19 percent critically low. Evidence certainty evaluated through GRADE criteria identified 53 findings with high certainty and 84 with moderate certainty, with additional moderate-certainty outcomes concerning stroke, Parkinson’s disease, and musculoskeletal conditions, alongside high- and moderate-certainty findings in surgical, maternal-neonatal, and older adult care. Random-effects reanalyses applied the Hartung-Knapp-Sidik-Jonkman correction with standardized effect sizes where positive values denote benefit, and the authors concluded that future research must prioritise standardisation, optimisation, and inclusive implementation.

Subject of Research: Effectiveness of digital health interventions compared to inactive controls and standard therapies across health outcomes

Article Title: Digital health for health outcomes: an umbrella review of meta-analyses of randomised controlled trials

Article References: Huang, J., Bao, C., Pang, D., Hou, Y., Yang, C., Chen, Y., Wang, F., Yang, T., Yu, Y., Fang, X., Ho, M., Wu, T., Zhou, J., Xiong, K., Downes, J. W., & Qu, Y. (2026). Digital health for health outcomes: an umbrella review of meta-analyses of randomised controlled trials. BMC Medicine. https://doi.org/10.1186/s12916-026-05381-y

Image Credits: AI Generated

DOI: 10.1186/s12916-026-05381-y

Keywords: digital health, umbrella review, meta-analysis, randomised controlled trials, telemonitoring, telemedicine, standard therapies, health outcomes, Digital, health, outcomes, umbrella