Acute healthcare utilization in end-of-life among Swedish brain tumor patients - a population based register study

Patients with progressive primary brain tumors commonly develop a spectrum of physical as well as cognitive symptoms. This places a large burden on family members and the condition's complexity often requires frequent health care contacts. We investigated potential associations between sociodemographic or socioeconomic factors, comorbidity or receipt of specialized palliative care (SPC) and acute healthcare utilization in the end-of-life (EOL) phase.

A population-based retrospective study of all adult patients dying with a primary malignant brain tumor as main diagnosis in 2015-2019 in the Stockholm area, the most densely populated region in Sweden (N = 780). Registry data was collected from the Stockholm Region´s central data warehouse (VAL). Outcome variables included emergency room (ER) visits or hospitalizations in the last month of life, or death in acute hospitals. Possible explanatory variables included age, sex, living arrangements (residents in nursing homes versus all others), Charlson Comorbidity Index, socio-economic status (SES) measured by Mosaic groups, and receipt of SPC in the last three months of life. T-tests or Wilcoxon Rank Sum tests were used for comparisons of means of independent groups and Chi-square test for comparison of proportions. Associations were tested by univariable and multivariable logistic regressions calculating odds ratios (OR).

The proportion of patients receiving SPC increased gradually during the last year of life and was 77% in the last 3 months of life. Multivariable analyses showed SPC to be equal in relation to sex and SES, and inversely associated with age (p ≤ 0.01), comorbidity (p = 0.001), and nursing home residency (p < 0.0001). Unplanned ER visits (OR 0.41) and hospitalizations (OR 0.45) during the last month of life were significantly less common among patients receiving SPC, in multivariable analysis (p < 0.001). In accordance, hospital deaths were infrequent in patients receiving SPC (2%) as compared to one in every four patients without SPC (p < 0.0001). Patients with less comorbidity had lower acute healthcare utilization in the last month of life (OR 0.35 to 0.65), whereas age or SES was not significantly associated with acute care utilization. Female sex was associated with a lower likelihood of EOL hospitalization (OR 0.72). Nursing home residency was independently associated with a decreased likelihood of EOL acute healthcare utilization including fewer hospital deaths (OR 0.08-0.54).

Receipt of SPC or nursing home residency was associated with lower acute health care utilization among brain tumor patients. Patients with more severe comorbidities were less likely to receive SPC and required excess acute healthcare in end-of-life and therefore constitute a particularly vulnerable group.