Table 4. Univariate and multivariable regression analysis of disease severity of Shiga toxin–producing Escherichia coli O157:H7 infection by sublineage, England, 2009–2019.
| Category | Univariate |
Multivariable* |
||
|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | p value | ||
| Stx2a only strains, n = 648 | ||||
| Sublineage | ||||
| IIb | Referent | |||
| Ic | 2.46 (1.75–3.46) | 2.60 (1.83–3.677) | <0.001 | |
| I/II | 9.09 (4.37–18.93) | 8.91 (4.26–18.63) | <0.001 | |
| Age group | ||||
| Adult | Referent | Referent | ||
| Child | 0.65 (0.44–0.97) | 0.62 (0.40–0.95) | 0.03 | |
| Sex | ||||
| M | Referent | Referent | ||
| F |
1.10 (0.74–1.63) |
|
1.16 (0.76–1.78) |
0.50 |
| Stx2a/2c strains, n = 505 | ||||
| Sublineage | ||||
| Ic | Referent | |||
| I/II | 1.03 (0.54–1.98) | 0.998 (0.521–1.91) | 0.997 | |
| Age group | ||||
| Adult | Referent | |||
| Child | 0.77 (0.52–1.13) | 0.79 (0.535–1.167) | 0.237 | |
| Sex | ||||
| M | Referent | |||
| F | 1.3 (0.88–1.91) | 1.267 (0.859–1.87) | 0.232 | |
*Adjusted for all other covariates in the model.