Health Care Utilization Patterns Associated with eConsults for Headache: Insights from an Urban Academic Medical Center.

Introduction: Interprofessional electronic consultations (eConsults) can reduce health care utilization and improve access to specialty care. However, health care utilization and access impacts of eConsults for headache disorders remain incompletely characterized. Methods: We conducted a retrospective, 1:3-matched cohort study comparing patients referred for in-person headache evaluations to patients who had a headache-related eConsult. The cohorts were propensity score-matched by age, sex, race, preferred language, provider specialty, insurance status, and medical comorbidities. Our primary outcome was the presence of one or more headache-related ambulatory encounters in the 12 months following the index referral date. We used univariable and conditional logistic regression models to ascertain the associations between referral type and outcome. Results: We identified 74 and 222 patients with eConsult and in-person referrals, respectively. Over the follow-up period, the proportion of patients with the primary outcome was significantly greater in the eConsult cohort than the in-person cohort (46.0% vs. 43.2%, p < 0.0001). A greater proportion of the in-person cohort had one or more ambulatory headache encounters in the 12 months preceding their referral than the eConsult cohort (10.8% vs. 5.4%, p < 0.0001). In the adjusted analysis, eConsult usage was not associated with significantly increased odds of the primary outcome (adjusted odds ratio [aOR] 1.1, 95% confidence interval [CI] 0.6-2.0, p = 0.71), although patients with one or more ambulatory neurology encounters in the preceding 12 months had significantly increased odds of the primary outcome (aOR 3.1, 95% CI 1.2-7.9, p = 0.015). Conclusion: Compared to in-person referrals, eConsult use for headache was not associated with significantly increased odds of having subsequent ambulatory headache-related encounters.