Volume 10, Number 5—May 2004
Research
Virulence Factors for Hemolytic Uremic Syndrome, Denmark1
Steen Ethelberg*
, Katharina E. P. Olsen*, Flemming Scheutz*†, Charlotte Jensen*, Peter Schiellerup*, Jørgen Engberg*, Andreas Munk Petersen*, Bente Olesen*, Peter Gerner-Smidt*, and Kåre Mølbak*
, Katharina E. P. Olsen*, Flemming Scheutz*†, Charlotte Jensen*, Peter Schiellerup*, Jørgen Engberg*, Andreas Munk Petersen*, Bente Olesen*, Peter Gerner-Smidt*, and Kåre Mølbak*
Table 4
Risk factors for bloody diarrhea among 343 STEC patients, Denmark, 1997–2003a
| Univariate analysis | Multivariate analysis | ||||||
|---|---|---|---|---|---|---|---|
| Determinant |
No. of patients |
No. (%) with BD |
OR |
95% CI |
OR |
95% CI |
|
| eae |
|||||||
| Negative |
111 |
17 (15.3) |
1 |
1 |
|||
| Positive |
232 |
108 (46.6) |
4.8 |
2.7 to 8.6 |
6.0 |
2.7 to 13.3 |
|
| stx2 |
|||||||
| Negative |
159 |
41 (25.8) |
1 |
1 |
|||
| Positive |
184 |
84 (45.7) |
2.4 |
1.5 to 3.8 |
2.5 |
1.2 to 5.1 |
|
| O157 |
|||||||
| No |
262 |
69 (26.3) |
1 |
1 |
|||
| Yes |
81 |
56 (69.1) |
6.3 |
3.6 to 10.8 |
2.7 |
1.2 to 5.7 |
|
| O103 |
|||||||
| No |
298 |
104 (34.9) |
1 |
1 |
|||
| Yes |
45 |
21 (46.7) |
1.6 |
0.9 to 3.1 |
2.8 |
1.2 to 6.3 |
|
| ehxA |
|||||||
| No |
79 |
15 (19.0) |
1 |
||||
| Yes |
264 |
110 (41.7) |
3.0 |
1.7 to 5.6 |
NS |
||
| Ageb | - | - | - | - | 1.3 | 1.2 to 1.5 | |
aSTEC, Shiga toxin–producing Escherichia coli; BD, bloody diarrhea; OR, odds ratio; CI, confidence intervals; NS, not statistically significant.
bCalculated for an increase in age of 10 years.
1Presented in part at the VTEC2003, 5th International Symposium on “Shiga Toxin (Verocytotoxin) Producing Escherichia coli Infections,” Edinburgh, Scotland, June 2003 (abstract O-6).
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