Table 2. Per person annual adjusted utilization counts and ratios by stage

Stage 2Stage 3Stage 4
CaseControlCaseControlCaseControl
a Percent tested post study enrollment.
Prescriptions (count)35.714.433.017.544.117.4
Treated with
    cardiac medication86.4%54.2%92.2%66.4%97.9%68.2%
    erythropoietin2.3%0.3%2.8%0.5%16.9%0.4%
    diabetes medication38.1%10.6%22.6%9.0%32.8%8.1%
Percent with any outpatient visits (count)17.510.015.311.822.111.9
Outpatient visit100.0%96.6%100.0%96.1%100.0%96.1%
Percent with any inpatient stays (count)0.430.140.380.210.920.22
Inpatient stay61.5%28.0%59.8%37.7%81.0%40.8%
Average days per stay4.143.874.094.054.504.18
Serum creatininea89.3%72.0%91.7%80.6%93.8%79.2%
Case/control ratios for counts (95% CI)
    prescriptions (ratio of count)2.48 (2.37 to 2.60)1.89 (1.85 to 1.92)2.53 (2.40 to 2.67)
    ratio of % ever treated with
        cardiac medication1.60 (1.52 to 1.67)1.39 (1.37 to 1.41)1.44 (1.37 to 1.51)
        erythropoietin6.67 (2.83 to 15.68)5.08 (3.87 to 6.68)44 (14 to 137)
        diabetes medication3.56 (3.09 to 4.17)2.50 (2.34 to 2.68)4.05 (3.13 to 5.24)
    outpatient visits (ratio of count)1.75 (1.66 to 1.83)1.30 (1.27 to 1.32)1.86 (1.71 to 2.00)
    ratio of % with any outpatient visit1.04 (1.03 to 1.05)1.04 (1.03 to 1.04)1.04 (1.03 to 1.06)
    inpatient stays (ratio of count)3.07 (2.79 to 3.36)1.81 (1.71 to 1.86)4.18 (3.68 to 4.68)
    ratio of % with any inpatient stay2.20 (2.02 to 2.39)1.59 (1.54 to 1.63)1.98 (1.81 to 2.17)
    ratio of average days per stay1.07 (0.99 to 1.15)1.01 (0.98 to 1.03)1.08 (0.99 to 1.17)
    ratio of serum creatinine measurementa1.24 (1.20 to 1.28)1.14 (1.13 to 1.15)1.19 (1.14 to 1.23)