Table 2.
Factors in STEC isolates with a significant (p < 0.05) association to the development of HUS (n = 32) among STEC infections in Norway 1992–2013 (n = 340)
| Factor | Cases exposed | Controls exposed | ORa | p-Value | aOR | 95% CIb | ||
|---|---|---|---|---|---|---|---|---|
| n | % | n | % | |||||
| stx2a | 29 | 90.6 | 61 | 19.8 | 39.1 | <0.001 | 28.6 | 7.83–104 |
| age ≤5 yearsc | 27 | 84.4 | 108 | 35.1 | 10.0 | <0.001 | 12.7 | 4.16–39.0 |
| efa1/lifA | 31 | 96.9 | 211 | 68.5 | 14.3 | <0.01 | ||
| paa | 31 | 96.9 | 211 | 68.5 | 14.3 | <0.01 | ||
| ecf4 | 31 | 96.9 | 215 | 69.9 | 13.4 | <0.01 | ||
| nleE | 31 | 96.9 | 216 | 70.1 | 13.2 | <0.01 | ||
| ent/espL2n | 31 | 96.9 | 216 | 70.1 | 13.2 | <0.01 | ||
| nleB | 31 | 96.9 | 219 | 71.1 | 12.6 | <0.01 | ||
| nleH1–2 | 29 | 90.6 | 135 | 43.8 | 12.4 | <0.001 | 8.40 | 2.18–32.3 |
| pagC-like | 26 | 81.3 | 152 | 49.4 | 4.45 | <0.01 | ||
| Z2099 | 29 | 90.6 | 219 | 71.1 | 3.39 | <0.05 | ||
| nleG2–3 | 24 | 75.0 | 152 | 49.4 | 3.08 | <0.01 | ||
| lpfA O113 | 19 | 59.4 | 103 | 33.4 | 2.91 | <0.01 | ||
a OR odds ratio
b aOR, 95% CI adjusted odds ratio with 95% confidence interval
cHost factor