Workflow standardization of a novel team care model to improve chronic care: a quasi-experimental study

Table 3 Adjusted results from a piecewise linear growth curve model of HEDIS clinical outcomes for patients with a primary care office visit

	Hypertension: Age18-59		Hypertension: Age 60-80		Diabetes: Age 18-75		Diabetes
	Systolic	Diastolic	Systolic	Diastolic	Systolic	Diastolic	A1c
	Est. (95% CI)	Est. (95% CI)	Est. (95% CI)	Est. (95% CI)	Est. (95% CI)	Est. (95% CI)	Est. (95% CI)
Intervention Clinic	0.71 (-4.25,5.67)	-0.96 (-4.87,2.94)	-1.18 (-6.05,3.69)	-1.5 (-3.84,0.83)	0.47 (-4.27,5.22)	-2.4 (-5.08,0.28)	0.81 (0.42,1.21)^b
Before First Office Visit	0.33 (-0.34,1.00)	0.35 (-0.08,0.78)	0.31 (-0.41,1.04)	-0.26 (-0.65,0.14)	0.62 (-0.24,1.47)	0.23 (-0.26,0.72)	0.07 (-0.00,0.14)
1-180 Days Post Visit	-2.44 (-3.80,-1.09)^b	-1.57 (-2.37,-0.76)^b	-1.12 (-2.35,0.11)	-0.85 (-1.51,-0.19)^a	-0.66 (-2.01,0.69)	-0.27 (-1.02,0.48)	-0.01 (-0.12,0.11)
181-365 Days Post Visit	3.44 (0.72,6.16)^a	2.15 (0.53,3.78)^b	0.62 (-1.64,2.88)	0.04 (-1.17,1.25)	3.21 (0.66,5.76)^a	1.24 (-0.10,2.58)	0.18 (-0.00,0.36)
Intervention Clinic x Before Visit	-0.28 (-0.67,0.11)	-0.35 (-0.60,-0.09)^b	-0.21 (-0.62,0.20)	-0.13 (-0.35,0.09)	0.05 (-0.34,0.44)	-0.15 (-0.37,0.07)	0.09 (0.05,0.13)^b
Intervention Clinic x 1-180 Days Post Visit	-0.75 (-2.82,1.31)	-0.58 (-1.87,0.71)	-0.96 (-2.86,0.95)	-1.03 (-2.07,0.01)	-1.65 (-3.68,0.39)	-1.13 (-2.23,-0.04)^a	-0.47 (-0.61,-0.33)^b
Intervention Clinic x 181-360 Days Post Visit	1.7 (-3.95,7.35)	0.86 (-2.34,4.05)	4.31 (-0.70,9.33)	0.52 (-2.06,3.10)	2.88 (-2.30,8.06)	0.37 (-2.64,3.38)	-0.05 (-0.39,0.29)
Observations	39,181	39,170	57,592	57,580	45,787	45,778	23,339
Num Patients	4,385	4,385	4,620	4,620	3,768	3,768	4,442

^aStatistically significant at the 5% probability level, ^bStatistically significant at the 1% probability level. The above variables specify the piecewise linear model. The analysis included a constant, patient level, provider level, and patient-panel level control variables, provider and actual quarter fixed effects, and an unstructured covariance matrix. The indicator for Usual Care Clinic was left out. Results are reported at the half yearly level. Interpretation of the variables:
Intervention Clinic measures the mean difference in the outcome of the intervention clinic compared to the usual clinic at the same index time. Before Office Visit, 1-180 Days Post Visit, 181-365 Days Post Visit measures slope (mean increase in outcome per quarter) of the usual care clinic during the indexed time period. Intervention Clinic x Before Office Visit, Intervention Clinic x 1-180 Days Post Visit, Intervention Clinic x 181-365 Days Post Visit measures the difference in the slop of the intervention clinic compared to the usual care clinic during the indexed time period. Est: Estimate; 95% CI: 95% Confidence Interval

ISSN: 1472-6963