Table 2.
Microscopic changes and their association with Eucoleus sp. in Norway rats (Rattus norvegicus) trapped in Vancouver, Canada.
| Category | Sub-category | Totala (%) (n = 183) |
Eucoleus infection |
p-valueb | ORc | 95% CI | |
|---|---|---|---|---|---|---|---|
| Presenta (%) (n = 79) |
Absenta (%) (n = 104) |
||||||
| Hyperkeratosis | Yes | 115 (62.8) | 68 (86.1) | 47 (45.2) | <0.001 | 8.20 | 3.83–19.29 |
| No | 60 (32.8) | 9 (11.4) | 51 (49.0) | ||||
| Mucosal hyperplasia | Yes | 108 (59.0) | 63 (79.7) | 45 (43.3) | <0.001 | 5.30 | 2.68–11.01 |
| No | 67 (36.6) | 14 (17.7) | 53 (51.0) | ||||
| Keratin pustules | Yes | 32 (17.5) | 25 (31.6) | 7 (6.7) | <0.001 | 6.25 | 2.64–16.58 |
| No | 143 (78.1) | 52 (65.8) | 91 (87.5) | ||||
| Submucosal inflammation | Yes | 87 (47.5) | 58 (73.4) | 29 (27.9) | <0.001 | 6.80 | 3.54–13.53 |
| No | 88 (48.1) | 20 (25.3) | 68 (65.4) | ||||
a
Frequencies and percentages may not add to 100% because of exclusion of rats with missing data.
b
Determined using logistical regression models.
c
Odds ratio with 95% confidence interval (CI).