Table 3.

The entire range of HCO3 in 56,386 MHD patients, divided into 12 incremental categories: <17, ≥27, and 10 groups in betweena

Serum HCO3 Group (mEq/L)Group Size (Absolute Number of Patients [%])Serum Phosphorus (mg/dl)nPNA (nPCR; g/kg per d)Serum Albumin (g/dl)Two-Year All-Cause Death (%)Two-Year Cardiovascular Death (%)
<172061 (4)7.1 ± 1.91.12 ± 0.283.78 ± 0.442210
17 to <182108 (4)6.7 ± 1.61.10 ± 0.263.80 ± 0.40229
18 to <193520 (6)6.4 ± 1.61.07 ± 0.253.80 ± 0.40219
19 to <205274 (9)6.2 ± 1.61.05 ± 0.253.79 ± 0.392311
20 to <216968 (12)6.0 ± 1.51.03 ± 0.243.77 ± 0.402411
21 to <228042 (14)5.8 ± 1.41.01 ± 0.233.77 ± 0.392411
22 to <23 (base)7997 (14)5.6 ± 1.40.98 ± 0.233.75 ± 0.402511
23 to <247155 (13)5.4 ± 1.30.96 ± 0.233.73 ± 0.402612
24 to <255374 (10)5.2 ± 1.30.95 ± 0.233.72 ± 0.422712
25 to <263548 (6)5.1 ± 1.30.92 ± 0.223.68 ± 0.432813
26 to <272132 (4)5.0 ± 1.30.92 ± 0.233.65 ± 0.482912
≥272207 (4)4.7 ± 1.30.90 ± 0.223.56 ± 0.423214
All patients56,386 (100)5.7 ± 1.51.00 ± 0.243.74 ± 0.412511
  • a Estimated protein intake (via urea kinetics), serum levels of phosphorus and albumin, and 24-mo prospective mortality (both all-cause and cardiovascular) are shown for each HCO3 category (data for continuous values are mean ± SD).