Table 3.
Univariable associations between clinical presentation and mortality by day 5 after presentation to the Animal Emergency Service for cats with tick paralysis
| Variable and categories* | All cases |
Analysis of death by day 5 |
||||
|---|---|---|---|---|---|---|
| % (n) | No. of cases receiving recommended treatment | % (n) died by day 5 | OR | 95% CI | P value † | |
| Initial gait score | <0.001 | |||||
| 1 | 40 (840) | 618 | 0.3 (2) | Ref. group | ||
| 2 | 27 (562) | 423 | 1.4 (6) | 4.4 | 0.9–22.1 | 0.069 |
| 3 | 26 (546) | 329 | 4.0 (13) | }17.7 | 4.1–76.0 | <0.001 |
| 4 | 6 (128) | 40 | 17.5 (7) | |||
| Not recorded | (1) | |||||
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
| Initial respiratory score | <0.001 | |||||
| A | 22 (463) | 333 | 0.3 (1) | Ref. group | ||
| B | 56 (1165) | 839 | 1.5 (13) | 5.2 | 0.7–40.1 | 0.112 |
| C | 18 (375) | 223 | 5.4 (12) | }20.8 | 2.7–159.0 | 0.004 |
| D | 4 (73) | 15 | 13.3 (2) | |||
| Not recorded | (1) | |||||
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
| Body temperature at presentation (°C) | 0.001 | |||||
| <35 | 3 (51) | 24 | 20.8 (5) | 23.6 | 6.3–88.6 | <0.001 |
| 35–<36 | 6 (99) | 57 | 5.3 (3) | 5.0 | 1.2–21.5 | 0.031 |
| 36–<37 | 14 (236) | 164 | 4.9 (8) | 4.6 | 1.5–14.3 | 0.008 |
| 37–<38 | 38 (646) | 454 | 1.1 (5) | Ref. group | ||
| 38–<39 | 37 (628) | 460 | 0.2 (1) | }0.2 | 0.0–1.6 | 0.120 |
| ⩾39 | 3 (46) | 36 | 0.0 (0) | |||
| Not recorded | (371) | 215 | 2.8 (6) | |||
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
| Total no. of adult ticks | 0.608 | |||||
| 0 | 1 (10) | 9 | 0.0 (0) | }Ref. group | ||
| 1 | 84 (1628) | 1091 | 2.0 (22) | |||
| 2 | 10 (191) | 130 | 0.8 (1) | }0.7 | 0.2–2.5 | 0.608 |
| 3 | 2 (45) | 38 | 2.6 (1) | |||
| ⩾4 | 3 (55) | 37 | 2.7 (1) | |||
| Not recorded | (148) | 105 | 2.9 (3) | |||
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
| Total no. of nymphs | 0.410 | |||||
| 0 | 97 (1876) | 1263 | 2.0 (25) | Ref. group | ||
| ⩾1 | 3 (53) | 42 | 0.0 (0) | 0.8 | 0.0–3.9 | 0.438 |
| Not recorded | (148) | 105 | 2.9 (3) | |||
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
*
Some adjoining categories were pooled for analyses as indicated by odds ratio (OR) positions
†
Values in bold are likelihood ratio test overall P values for the variable; values not in bold are Wald P values for the particular category relative to the reference group (Ref. group)
CI = confidence interval