Table 5: Rates of access to care (emergency department visits, hospital admission and hospital readmission) for physicians in the QIIP and control groups
MeasureTime; rateAdjusted change, QIIP group v. control group (95% CI)
12 mo before intervention or index date12 mo after intervention or index date
Emergency department visits per 100 patients per yr
Canadian Triage and Acuity Scale score 1-3QIIP group20.824.70.1 (-1.3 to 1.5)
Control group22.024.9
Canadian Triage and Acuity Scale score 4-5 (low acuity)QIIP group36.729.3-1.0 (-3.3 to 1.2)
Control group28.824.6
Hospital admission for ambulatory-care-sensitive condition per 10 000 patients per yr
OverallQIIP group52.851.53.0 (-5.0 to 11.0)
Control group42.742.1
DiabetesQIIP group8.08.40 (-3.0 to 3.0)
Control group7.57.2
AsthmaQIIP group5.02.9-1.0 (-2.0 to 1.0)
Control group4.13.3
Chronic obstructive pulmonary diseaseQIIP group25.928.16.0 (1.0 to 11.0)
Control group18.518.3
Cardiac heart failureQIIP group13.912.1-3.0 (-6.0 to 1.0)
Control group12.713.2
Hospital readmission (% of those admitted to hospital)
Within 30 dQIIP group5.55.5-0.03 (-0.08 to 0.08)
Control group5.15.3
Within 1 yrQIIP group17.017.40.2 (-1.1 to 1.6)
Control group15.815.9

Note: CI = confidence interval, QIIP = Quality Improvement and Innovation Partnership.

*Generalized linear regression adjusted for baseline value, sex, rurality, age and comorbidity (Johns Hopkins Adjusted Diagnosis Groups30).