BACKGROUND: The availability and use of broadband internet play an increasingly important role in health care and public health.
OBJECTIVE: This study examined the associations between broadband internet availability and use with drug overdose deaths in the United States.
METHODS: We linked 2019 county-level drug overdose death data in restricted-access multiple causes of death files from the National Vital Statistics System at the US Centers for Disease Control and Prevention with the 2019 county-level broadband internet rollout data from the Federal Communications Commission and the 2019 county-level broadband usage data available from Microsoft\'s Airband Initiative. Cross-sectional analysis was performed with the fixed-effects regression method to assess the association of broadband internet availability and usage with opioid overdose deaths. Our model also controlled for county-level socioeconomic characteristics and county-level health policy variables.
RESULTS: Overall, a 1% increase in broadband internet use was linked with a 1.2% increase in overall drug overdose deaths. No significant association was observed for broadband internet availability. Although similar positive associations were found for both male and female populations, the association varied across different age subgroups. The positive association on overall drug overdose deaths was the greatest among Hispanic and Non-Hispanic White populations.
CONCLUSIONS: Broadband internet use was positively associated with increased drug overdose deaths among the overall US population and some subpopulations, even after controlling for broadband availability, sociodemographic characteristics, unemployment, and median household income.

We examine the effect of Internet diffusion on the uptake of an important public health intervention: the measles, mumps and rubella (MMR) vaccine. We study England between 2000 and 2011 when Internet diffusion spread rapidly and there was a high profile medical article (falsely) linking the MMR vaccine to autism. OLS estimates suggest Internet diffusion led to an increase in vaccination rates. This result is reversed after allowing for endogeneity of Internet access. The effect of Internet diffusion is sizable. A one standard deviation increase in Internet penetration led to around a 20% decrease in vaccination rates. Localities characterized by higher proportions of high skilled individuals and lower deprivation levels had a larger response to Internet diffusion. These findings are consistent with higher skilled and less-deprived parents responding faster to false information that the vaccine could lead to autism.

OBJECTIVE: People aging with disability may be limited in their ability to engage in healthy behaviors to maintain cardiometabolic health. We investigated the role of health promoting features in the neighborhood environment for incident cardiometabolic disease in adults aging with physical disability in the United States.
METHODS: Retrospective cohort study.
METHODS: Optum\'s Clinformatics® Data Mart Database (2007-2018) of administrative health claims.
METHODS: ICD-9-CM codes were used to identify 15 467 individuals with a diagnosis of Cerebral Palsy, Spina Bifida, Multiple Sclerosis, or Spinal Cord Injury.
METHODS: Cardiometabolic disease was identified using ICD-9-CM/ICD-10-CM codes over 3 years of follow-up. Measures of the neighborhood environment came from the National Neighborhood Data Archive and linked to individual residential ZIP codes over time. Covariates included age, sex, and comorbid health conditions.
METHODS: Cox regression models estimated hazard ratios (HR) for incident cardiometabolic disease. Using a 1-year lookback period, individuals with pre-existing cardiometabolic disease were excluded from the analysis.
RESULTS: Net of individual risk factors, residing in neighborhoods with a greater density of broadband Internet connections (HR = .88, 95% CI: .81, .97), public transit stops (HR = .89, 95% CI: .83, .95), recreational establishments (HR = .89, 95% CI: .83, .96), and parks (HR = .88, 95% CI: .82, .94), was associated with reduced risk of 3-year incident cardiometabolic disease.
CONCLUSIONS: Findings identify health-promoting resources that may mitigate health disparities in adults aging with disability.

The COVID-19 pandemic has amplified the role of telehealth in health care delivery. Regional variation in internet access and telehealth use are well-documented, but the effect of neighborhood factors, including the pervasiveness of broadband internet, on older adults\' telehealth usage in the context of internet access is not known.
This study aimed to investigate how individual and neighborhood characteristics, including the pervasiveness of neighborhood broadband internet subscription, are associated with engagement in telehealth among older adults with internet access.
In this cross-sectional study, we included 5117 community-living older adults aged ≥65 years, who participated in the 2017 National Health and Aging Trends Study with census tract-level data for participants\' places of residence from the American Community Survey.
Of an estimated 35.3 million community-living older adults, 21.1 million (59.7%) were internet users, and of this group, more than one-third (35.8%) engaged in telehealth. In a multivariable regression model adjusted for individual- and neighborhood-level factors, age, education, income, and the pervasiveness of neighborhood broadband internet subscription were associated with engagement in telehealth, while race, health, county metropolitan status, and neighborhood social deprivation were not. Among internet users, living in a neighborhood at the lowest (versus highest) tertile of broadband internet subscription was associated with being 40% less likely to engage in telehealth (adjusted odds ratio 0.61, 95% CI 0.42-0.87), all else equal.
Neighborhood broadband internet stands out as a mutable characteristic that is consequential to engagement in telehealth.

Informal caregivers provide unpaid care to their physically or mentally ill loved ones and play a critical role in the healthcare delivery. eHealth tools, including the broadband internet, can facilitate care processes and impact the caregiving burden through seeking health information and health communication. This study examines the predictors of access to broadband internet and the factors associated with health information seeking and health communication among informal caregivers with broadband internet. We used data from cycles 1 and 2 of the Health Information National Trends Survey (HINTS 5) and employed generalized linear regression models with the maximum likelihood estimation. Specifically, we performed a two-part model: (1) a logistic regression model of broadband internet access among all caregivers (n = 929) and (2) a logistic regression model of health information seeking and health communication among caregivers with broadband internet access (n = 404). We found that caregivers who were younger (18-34 years versus 45+ years), female (versus male), and those who were divorced/widowed/separated (versus singles) were less likely to have broadband internet access. While those who were married/living as married (versus singles), with higher incomes (≥$100,000 versus <$35,000), and those living in metropolitan areas were more likely to have broadband internet access. Among caregivers with broadband internet access, younger, female, non-Hispanic white caregivers, and those with higher levels of education and income, as well as those who cared for cancer patients, were more likely to seek health information for someone else. Additionally, caregivers aged 35-39 years and those with more education were more likely to look for health information for themselves than their counterparts. Furthermore, caregivers who were aged 40-44 years, females, divorced/widowed/separated, those with higher incomes, and those who cared for patients with Alzheimer\'s, confusion, and dementia were more likely to communicate electronically with a provider. The results suggest disparities in broadband internet access and indicate variations in factors associated with health information seeking and health communication. The findings underscore the need to address barriers attributed to the digital divide among informal caregiving groups.