Table 3.
Proportion of Shiga Toxin–Producing Escherichia coli Among Children Living With and Without Ruminant Animals in the Compound by Case/Control Status and by Age
| Cases | Controls | |||||
|---|---|---|---|---|---|---|
| STEC-Positive n = 247 |
STEC-Negative n = 4552 |
P Value | STEC-Positive n = 451 |
STEC-Negative n = 4342 |
P Valuea | |
| No. (%) positive or negative for STEC, case/control status, with ruminants living in the compound (cow, goat, or sheep) | ||||||
| Ruminants present | 187 (75.7%) | 2728 (59.9%) | <.001 | 332 (73.6%) | 2644 (60.9%) | <.001 |
| Age group, mo | ||||||
| ȃ0–11 | 31/38 (81.6%) | 1040/1670 (62.3%) | .024 | 80/108 (74.1%) | 962/1592 (60.4%) | .005 |
| ȃ12–23 | 64/84 (76.2%) | 934/1592 (58.7%) | .002 | 129/161 (80.1%) | 943/1520 (62.0%) | <.001 |
| ȃ24–59 | 92/125 (73.6%) | 754/1290 (58.4%) | .001 | 123/182 (67.6%) | 739/1230 (60.1%) | 0.067 |
Positive defined as Ct <35; negative defined as Ct ≥35.Abbreviation: STEC, Shiga toxin–producing E. coli; Ct, cycle threshold.
χ 2 tests were used to estimate P values; significant values are shown in bold.