Table 2.

Demographic, clinical, and laboratory values in 2798 PD patients and according to the categories of A1c

VariablesA1c CategoriesP for trend
<5.0% (n = 102)5.0 to 5.9% (n = 479)6.0 to 6.9% (n = 747)7.0 to 7.9 (n = 649)8.0 to 8.9% (n = 420)9.0 to 9.9% (n = 217)≥10% (n = 184)
Age (years)57 ± 1261 ± 1260 ± 1358 ± 1356 ± 1354 ± 1354 ± 13<0.001
Gender (% women)43.143.844.241.645.242.448.40.54
Race/ethnicity (%)0.41
    Caucasian47.154.254.551.853.248.950.5
    African American27.520.717.820.817.419.422.3
    Hispanic13.715.314.814.816.222.119.0
Vintage (dialysis time, %)<0.001
    <6 months63717168747671
    6 to 24 months19161518161419
    2 to 5 years14111212888
    >5 years4222222
Primary insurance
    Medicare (%)53.461.061.758.353.656.057.50.20
Body mass index (kg/m2)26.4 ± 4.526.7 ± 4.527.1 ± 4.427.0 ± 5.227.2 ± 4.726.6 ± 4.326.5 ± 4.10.42
Serum albumin (g/dl)3.55 ± 0.553.46 ± 0.453.46 ± 0.473.46 ± 0.453.44 ± 0.433.40 ± 0.453.37 ± 0.450.02
Serum creatinine (mg/dl)8.3 ± 3.37.4 ± 3.27.2 ± 3.17.0 ± 2.96.9 ± 2.96.8 ± 2.86.4 ± 2.8<0.001
Serum ferritin (ng/ml)399 ± 361383 ± 371366 ± 500308 ± 328288 ± 279294 ± 320352 ± 327<0.001
Serum total iron binding capacity (mg/dl)233 ± 62237 ± 56246 ± 53241 ± 50243 ± 49240 ± 45236 ± 500.02
Serum bicarbonate (meq/l)24.2 ± 3.225.2 ± 3.125.4 ± 3.025.5 ± 3.025.8 ± 3.125.8 ± 3.025.3 ± 3.1<0.001
Serum phosphorus (mg/dl)5.5 ± 1.55.1 ± 1.25.1 ± 1.35.1 ± 1.45.1 ± 1.35.1 ± 1.35.2 ± 1.20.05
Serum calcium (mg/dl)9.0 ± 0.99.1 ± 0.89.1 ± 0.79.1 ± 0.79.1 ± 0.79.0 ± 0.88.9 ± 0.70.01
Blood hemoglobin (g/dl)11.8 ± 1.712.1 ± 1.412.2 ± 1.412.4 ± 1.412.4 ± 1.412.4 ± 1.412.3 ± 1.6<0.001
White blood cell count (×103 per μl)7.1 ± 2.17.5 ± 2.47.8 ± 2.78.1 ± 2.48.0 ± 2.38.4 ± 4.87.8 ± 2.0<0.001
Lymphocyte (% of white blood cell count)18.3 ± 7.018.4 ± 6.819.0 ± 7.518.6 ± 6.818.8 ± 6.619.4 ± 6.919.4 ± 6.70.48
  • Data represent 13-week average measurements during the baseline (first calendar) quarter.