Table 3.
Laboratory characteristics of patients with Shiga toxin-producing E. coli
| Variable | No. (%)a of patients with: |
P value (Fisher's exact test) | |
|---|---|---|---|
| O157:H7 STEC (n = 33) | Non-O157:H7 STEC (n = 17) | ||
| Elevated white blood cell count | 21/32 (65.6) | 8/14 (57.1) | 0.74 |
| Low hematocrit | 7/32 (21.9) | 3/14 (21.4) | 1.00 |
| Evidence of hemolysisb | 7/7 (100) | 3/3 (100) | 1.00 |
| Elevated creatinine | 5/32 (15.6) | 4/16 (25.0) | 0.44 |
| Low platelet count | 7/32 (21.9) | 3/14 (21.4) | 1.00 |
| Hematuria | 10/26 (38.5) | 5/10 (50.0) | 0.71 |
| Proteinuria | 8/26 (30.8) | 4/10 (40.0) | 0.70 |
a
Results indicate the number of patients with the given characteristic over the total number of patients for whom that characteristic was evaluated.
b
Determined for patients with low hematocrit and defined as the presence of schistocytes, helmet cells, or burr cells.