Association of Homelessness with Before Medically Advised Discharge After Surgery

Before medically advised (BMA) discharge, which refers to patients leaving the hospital at their own discretion, is associated with higher rates of readmission and death in other settings. It is not known if housing status is associated with this phenomenon after surgery.

We identified all admitted adults who underwent an operation by one of 11 different surgical services at a single tertiary care hospital between January 2013 and June 2022. Chi-square tests and t-tests were used to compare demographic and clinical features between BMA discharges and standard discharges. Multivariable logistic regression was used to evaluate the association between housing status and BMA discharge, adjusting for demographic and admission characteristics. Documented reasons for BMA discharge were also abstracted from the medical record.

Of 111,036 patient admissions, 242 resulted in BMA discharge (0.2%). After adjusting for observable confounders, patients experiencing homelessness had substantially higher odds of BMA discharge after surgery (adjusted odds ratio 4.4, 95% confidence interval 3.0-6.4; p < 0.001) when compared to housed. Patients who underwent emergency surgery, patients with a documented substance use disorder, and those insured by Medicaid also had significantly higher odds of BMA discharge. System- or provider-related reasons (including patient frustration with the hospital environment, challenges in managing substance dependence, and perceived inadequacy of paint control) were documented in 96% of BMA discharges for patients experiencing homelessness (vs. 66% in housed patients).

BMA discharge is more common in patients experiencing homelessness after surgery even after adjusting for observable confounding characteristics. Deeper understanding of the drivers of BMA discharge in patients experiencing homelessness through qualitative methods are critical to promote more equitable and effective care.