Table 2. Characteristics of HUS cases by E. coli O157:H7 culture isolation status, New York, 1998–1999a.
| Characteristics |
Escherichia coli O157:H7 culture |
||
|---|---|---|---|
| Positive (n = 34) | Negative (n = 20) | p value | |
| Mean age at admission (y) | 23.6 | 23.7 | 0.99 |
| Mean length of hospital stay (days) | 13.4 | 12.6 | 0.71 |
| Mean duration from diarrhea onset to specimen collection date (days) | 4.1 | 6.0 | 0.06 |
| Median duration from admission date to specimen collection date (days) | 0 | 1.0 | 0.02 |
| Mean BUN (mg/dL) | 62.1 | 82.6 | 0.05 |
| Mean creatinine (mg/dL) | 3.6 | 4.8 | 0.24 |
| Mean platelet count (/103) | 50.9 | 53.8 | 0.81 |
| Mean leukocyte count (/103) | 18.5 | 21.4 | 0.23 |
| % outbreak related | 38% | 5% | 0.01 |
| % blood in stool | 82% | 65% | 0.15 |
| % reported to surveillance | 88% | 55% | 0.01 |
| % microangiopathic change | 79% | 100% | 0.03 |
| % urinary tract infection | 3% | 20% | 0.04 |
aHUS, hemolytic uremic syndrome; E. coli, Escherichia coli; BUN, blood urea nitrogen.