Table 3.

Multivariable Models of Post-Transition Acute Care Utilization

	Odds ratio (95 % confidence interval)
Characteristic	Clinic visits	Emergency department visits	Hospitalizations
Transitioning	1.03 (0.97–1.09)	1.03 (0.90–1.17)	1.10 (0.87–1.40)
Pre-transition visits, per visit in the 4 months prior to transition	1.33 (1.30–1.36)	1.83 (1.75–1.91)	1.98 (1.87–2.11)
Comorbidity score, per point	1.07 (1.05–1.08)	1.16 (1.13–1.19)	1.33 (1.29–1.37)
Patient age, per decade	1.09 (1.06–1.11)	0.95 (0.91–0.99)	1.04 (0.97–1.12)
Women, versus men	1.13 (1.05–1.21)	0.98 (0.84–1.13)	1.02 (0.78–1.32)
Race/ethnicity, compared to Whites
African American/Black	1.17 (1.07–1.29)	1.13 (0.92–1.38)	1.06 (0.78–1.45)
Asian/Pacific Islander	1.06 (0.88–1.28)	0.60 (0.38–0.94)	0.50 (0.24–1.03)
Latino/Hispanic	1.24 (1.13–1.37)	1.23 (0.99–1.52)	0.75 (0.52–1.08)
Other/Unknown	1.09 (0.91–1.30)	0.68 (0.41–1.10)	0.92 (0.40–2.11)
Resident type, compared to categorical
Primary care	1.03 (0.96–1.11)	1.06 (0.90–1.25)	1.06 (0.80–1.41)
Global health	0.99 (0.88–1.12)	1.05 (0.83–1.34)	1.01 (0.67–1.54)
Primary care and global health	1.03 (0.81–1.32)	1.04 (0.65–1.69)	1.76 (0.83–3.74)

There was an insufficient rate of ACSC hospitalizations to reliably model. Usual provider continuity index and resident visits, which were colinear with pre-transition visit rates, were not included in the models. Patient language, which was colinear with race, was not included in the models.