• Ishani Ganguli, Emma D Chant, E John Orav, Ateev Mehrotra, and Christine S Ritchie.
• Division of General Internal Medicine and Primary Care, Brigham and Women's Hospital, Boston; and Harvard University, Boston, Massachusetts (I.G., E.J.O.).
• Ann. Intern. Med. 2024 Feb 1; 177 (2): 125133125-133.

BackgroundDays spent obtaining health care outside the home can represent not only access to needed care but also substantial time, effort, and cost, especially for older adults and their care partners. Yet, these "health care contact days" have not been characterized.ObjectiveTo assess composition of, variation and patterns in, and factors associated with contact days among older adults.DesignCross-sectional study.SettingNationally representative 2019 Medicare Current Beneficiary Survey data linked to claims.ParticipantsCommunity-dwelling adults aged 65 years and older in traditional Medicare.MeasurementsAmbulatory contact days (days with a primary care or specialty care office visit, test, imaging, procedure, or treatment) and total contact days (ambulatory days plus institutional days in a hospital, emergency department, skilled-nursing facility, or hospice facility); multivariable mixed-effects Poisson regression to identify patient factors associated with contact days.ResultsIn weighted results, 6619 older adults (weighted: 29 694 084) had means of 17.3 ambulatory contact days (SD, 22.1) and 20.7 total contact days (SD, 27.5) in the year; 11.1% had 50 or more total contact days. Older adults spent most contact days on ambulatory care, including primary care visits (mean [SD], 3.5 [5.0]), specialty care visits (5.7 [9.6]), tests (5.3 [7.2]), imaging (2.6 [3.9]), procedures (2.5 [6.4]), and treatments (5.7 [13.3]). Half of the test and imaging days were not on the same days as office visits (48.6% and 50.1%, respectively). Factors associated with more ambulatory contact days included younger age, female sex, White race, non-Hispanic ethnicity, higher income, higher educational attainment, urban residence, more chronic conditions, and care-seeking behaviors (for example, "go to the doctor…as soon as (I)…feel bad").LimitationStudy population limited to those in traditional Medicare.ConclusionOn average, older adults spent 3 weeks in the year getting care outside the home. These contact days were mostly ambulatory and varied widely not only by number of chronic conditions but also by sociodemographic factors, geography, and care-seeking behaviors. These results show factors beyond clinical need that may drive overuse and underuse of contact days and opportunities to optimize this person-centered measure to reduce patient burdens, for example, via care coordination.Primary Funding SourceNational Institute on Aging.

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