Table 3.

Pooled Analysis of High- and Highest-Risk Patients, Level and Slope Changes: Potentially Preventable and All HAs and ED Visits

Changes	Potentially preventable HAs IRR (95% CI)	Potentially preventable ED visits IRR (95% CI)	HAs IRR (95% CI)	ED visits IRR (95% CI)
Level change, control cohorts	0.58 (0.51-0.66)	0.63 (0.48-0.82)	0.58 (0.51-0.66)	0.63 (0.58-0.69)
Level change, intervention cohort	0.42 (0.34-0.52)	0.62 (0.40-0.97)	0.47 (0.40-0.56)	0.54 (0.47-0.62)
Difference in level changes	0.73 (0.56-0.94)	0.99 (0.58-1.67)	0.81 (0.65-1.01)	0.85 (0.72-1.01)
Slope change, control cohorts	0.96 (0.94-0.98)	0.96 (0.92-1.00)	0.94 (0.92-0.96)	0.94 (0.93-0.95)
Slope change, intervention cohort	0.99 (0.95-1.03)	0.89 (0.83-0.95)	0.94 (0.92-0.97)	0.94 (0.92-0.96)
Difference in slope changes	1.03 (0.98-1.08)	0.93 (0.87-1.00)	1.01 (0.98-1.04)	1.00 (0.98-1.02)

ED, emergency department; HA, hospital admission; IRR, incidence rate ratio.