Table 2.

Adjusted Relative Risks of Specific Indicators by Year of Enrollment

VariableFirst Year RR (95% CI)Second Year RR (95% CI)Third Year RR (95% CI)
RR = relative risk, CI = confidence interval.
Note: Each row represents a separate logistic regression. Shown are the adjusted relative risks (and 95% confidence intervals) associated with each year of enrollment, with the fourth year the reference year. These analyses adjust for patient age, sex, socioeconomic status, and year. The avoidable hospitalization analysis adjusted for case mix as well. For the mammogram analysis, number of observations = 243,614; for the Papanicolaou analysis, N = 417,210; and for the any visit and any primary care provider visit analyses, N = 798,967. In these 4 analyses individual patients may be included for each year they were enrolled. For the avoidable hospitalization analysis, each patient was included only once, N = 335,547.
Any visit1.02 (1.02, 1.03)0.98 (0.98, 0.99)0.99 (0.99, 0.99)
Any primary care provider visit1.15 (1.15, 1.14)1.03 (1.02, 1.04)1.00 (0.99, 1.01)
Mammogram0.87 (0.87, 0.88)0.89 (0.88, 0.90)0.97 (0.96, 0.97)
Papanicolaou test0.99 (0.98, 1.00)1.02 (1.01, 1.02)1.00 (0.99, 1.00)
Avoidable hospitalization1.89 (1.26, 2.81)1.68 (1.10, 2.55)1.00 (0.62, 1.62)