Introduction:
Digital health involves the use of technology to delivery health care. It is associated with improved clinical outcomes in various populations. We assessed its role in medication adherence in adults with hypertension.
Methods:
Data from the 2018 National Health Interview Survey data was used. We analyzed 8,224 respondents with hypertension representing about 69 million United States adults. The independent variables were: Use of the internet to (1) to look up health information (2) to fill a prescription and (3) to schedule a medical appointment and use of an email (4) to communicate with a healthcare provider. The dependent variable was anti-hypertensive medication adherence. Chi-square analysis was used to identify group differences and a logistic regression was used to analyze the association between digital health utilization and anti-hypertensive medication adherence.
Results:
Of the study population, 7,387/8,224 (89.8%) of the respondents reported adherence to anti-hypertensive medications. Those who were adherent were predominantly > 65 years of age, 4141/7387 (47.8%) and earned > $75,000/yearly, 580/2581 (25.2%). The use of internet to look up health information as compared to those who do not, was associated with 30% reduced odds of medication adherence [OR 0.71, 95% CI 0.59, 0.86, p=<.001]. However, this was insignificant after adjusting for covariates [AOR 0.92, 95% CI 0.89, 1.22, p=0.551]. Using the internet to fill up prescription as compared to those who do not, was associated with 47% odds of medication adherence [OR 1.47, CI 1.14,1.90, p=0.003]. This odd increased further after adjusting for covariates [AOR 1.95, CI 1.37,2.78, p=<.001]. No significant association was found in the relationship between medication adherence and scheduling a medical appointment with the internet or communicating with a provider via email even after adjusting for covariates.
Conclusion:
Increase adherence to anti-hypertensive medications is associated with online refill of prescriptions. This means that the use of digital health technologies in hypertensive populations can lead to better health outcomes. Future studies should evaluate other aspects of digital health use in hypertensive populations.