Table 2.

Incidence of Emergency Department Visits Across Continuity of Care Index Groups (n = 3395)

VariablesTotal (n = 3395)Level of COCIP for trend*
<0.47 (n = 826)0.47–0.99 (n = 906)1 (n = 1663)
Patient characteristics at baseline
    Insurance premiums (US$)
    P4P participating status
        Not a participant3.155.453.092.04<.01
Medical conditions
    In a preceding year
    In the COC period
        Ambulatory visits for asthma, n
        Hospitalization for asthma
        ED visits for asthma
  • * Cochran-Armitage trend test.

  • CCI, Charlson Comorbidity Index; COCI, continuity of care index; COPD, chronic obstructive pulmonary disease; ED, emergency department; P4P, pay for performance.