Table 4.
Univariable associations between treatment variables and mortality by day 5 after presentation to the Animal Emergency Service (AES) 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* | |
| TAS route † | 0.321 | |||||
| IP | 9 (148) | 21 | 4.8 (1) | Ref. group | ||
| IV | 91 (1544) | 1323 | 1.7 (23) | 0.4 | 0.0–2.7 | 0.321 |
| Not included‡ | (385) | 66 | 6.1 (4) | |||
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
| TAS reaction † | 0.001 | |||||
| No | 77 (1574) | 1251 | 1.4 (18) | Ref. group | ||
| Yes | 8 (161) | 133 | 6.0 (8) | 4.4 | 1.9–10.3 | 0.001 |
| Not recorded § | (38) | 25 | 4.0 (1) | |||
| TAS not administered | 15 (304) | 1 | 100.0 (1) | |||
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
| Coat clip performed | 0.010 | |||||
| No | 57 (1139) | 535 | 3.4 (18) | Ref. group | ||
| Yes | 43 (872) | 817 | 1.2 (10) | 0.4 | 0.2–0.8 | 0.010 |
| Not recorded | (66) | 58 | 0.0 (0) | |||
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
| Mechanically ventilated | <0.001 | |||||
| No | 99 (2052) | 1388 | 1.7 (24) | Ref. group | ||
| Yes | 1 (25) | 22 | 18.2 (4) | 12.6 | 4.0–40.1 | <0.001 |
| Total | 100 (2077) | 1410 | 2.0 (28) | |||
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)
For cases that received tick antitoxin serum (TAS) at either the referring clinic prior to presentation to the AES and/or at AES
>1 dose of TAS at either referring clinic prior to presentation to the AES and/or at AES, or route not known, or route was other than intravenous (IV) or intraperitoneal (IP)
TAS was administered but the occurrence of a TAS reaction or not was not specified
OR = odds ratio; CI = confidence interval