Patterns of healthcare utilization among patients with sickle cell disease hospitalized with pain crises.

Background: Vaso-occlusive crises (VOC) are the hallmark of sickle cell disease (SCD). Adults experiencing VOC often have high rates of unexpected healthcare utilization. We characterized prior and future healthcare utilization among adults hospitalized with VOC at an urban, academic medical center.

Methods: We identified 449 VOC hospitalizations among 63 patients from 2013 to 2016. Patients were categorized based on receiving established care at the medical center and prior utilization: (a) not established (n = 21); (b) newly established (n = 10); (c) established with low utilization in past 12 months (<4 VOC hospitalizations) (n = 22); and (d) established with high utilization in past 12 months (≥4 VOC hospitalizations) (n = 10). Patient and hospitalization characteristics and future utilization were compared across categories.

Results: Median age was 26 years (Q1 = 22, Q3 = 29) and 55.6% were female. Established patients with high prior utilization tended to have higher median pain scores at admission (10, = .08). Thirty-day readmissions were highest in established patients with high prior utilization ( = .06), but 30-day clinic visits were highest in established patients with low prior utilization ( = .08). Adjusted linear regression found that newly established patients ( = -4.6, < .01) and established patients with low prior utilization ( = -5.6, < .01) had fewer VOC hospitalizations in the ensuing 12 months than established patients with high prior utilization.

Conclusion: Among patients with SCD hospitalized for VOC, there was heterogeneity in healthcare utilization, with persistence in utilization over time for some patients. Efforts are needed to shift care from the acute setting to the outpatient clinic, which may lead to improved outcomes.