Table 1.
Categorical Variables in the Oligoanuric and Nonoligoanuric Groups
| Characteristic | Patients, No. (%)
|
OR (95% CI) | P Value | ||
|---|---|---|---|---|---|
| All (n = 50) | Oligoanuric (n = 34) | Nonoligoanuric (n = 16) | |||
| Female sex | 32 (64) | 22 (64.7) | 10 (62.5) | 0.9 (0.3–3.1) | .88 |
| Race | |||||
| White | 47 (94) | 33 (97.1) | 14 (87.5) | 0.2 (0.2–2.5) | .24 |
| White/black | 2 (4) | 1 (2.9) | 1 (6.3) | 2.2 (0.–37.6) | .54 |
| White/Asian | 1 (2) | 0 (0) | 1 (6.3) | NA | .32 |
| Stool culture positive for E coli O157:H7 | 27 (54) | 18 (52.9) | 9 (56.3) | 1.1 (0.3–3.8) | .83 |
| E coli O121:H19 | 1 (2) | 0 (0) | 1 (6.3) | NA | .32 |
| Bloody diarrheaa | 42 (85.7) | 28 (84.8) | 14 (87.5) | 1.3 (0.3–7.3) | >.99 |
| Vomiting | 48 (96) | 32 (94.1) | 16 (100) | NA | >.99 |
| Antimotility agents before HUS | 21 (42) | 14 (14.2) | 7 (43.8) | 1.1 (0.3–3.7) | .86 |
| Antibiotics before HUS | 18 (36) | 10 (29.4) | 8 (50) | 2.4 (0.7–8.2) | .16 |
| Feverb | 22 (44) | 16 (47) | 6 (37.5) | 0.7 (0.2–2.3) | .53 |
Abbreviations: CI, confidence interval; HUS, hemolytic uremic syndrome; NA, not applicable; OR, odds ratio.
a
One oligoanuric case was excluded from this analysis because of uncertainty regarding blood in stool, so the denominator is 49 for all patients and 33 for oligoanuric patients for this variable.
b
Fever as reported by family.