Table 1.
Results at baseline of the statistical analysis comparing cats remaining nonazotemic and cats developing azotemia
| Variable | Nonazotemic cats (N = 121) | Azotemic Cats (N = 27) | P Value | |
|---|---|---|---|---|
| Age (years) | .343 | |||
| Median (range) | 12.2 (9.0–21.8) | 13.4 (9.9–20.1) | ||
| Breed | DSH/DLH | 104 (86%) | 22 (81%) | .555 |
| Pedigree | 17 (14%) | 5 (19%) | ||
| Sex | FN | 71 (59%) | 16 (59%) | .993 |
| MN | 50 (41%) | 11 (41%) | ||
| Diet fed | Predominantly dry food | 32 (26%) | 9 (33%) | .345 |
| Approximately 50%:50% | 30 (25%) | 3 (11%) | ||
| Predominantly wet food | 59 (49%) | 14 (52%) | ||
| Urinary diet fed | No | 85 (70%) | 20 (74%) | .562 |
| Yes | 11 (9%) | 1 (4%) | ||
| Unknown | 25 (21%) | 6 (22%) | ||
| Senior diet fed | No | 47 (39%) | 9 (33%) | .595 |
| Yes | 50 (41%) | 14 (52%) | ||
| Unknown | 24 (20%) | 4 (15%) | ||
| Environment | Semirural/rural | 22 (18%) | 3 (11%) | .413 |
| Urban | 99 (82%) | 24 (89%) | ||
| Lifestyle | Predominantly indoor | 86 (71%) | 15 (56%) | .026 |
| Approximately 50%:50% | 25 (21%) | 4 (15%) | ||
| Predominantly outdoor | 10 (8%) | 8 (30%) | ||
| Smoke exposure | None/infrequent | 71 (59%) | 13 (48%) | .383 |
| Frequent | 44 (36%) | 11 (41%) | ||
| Unknown | 6 (5%) | 3 (11%) | ||
| Vaccination status | Never/occasional vaccination | 78 (65%) | 8 (30%) | .007 |
| Frequent/annual vaccination | 26 (21%) | 13 (48%) | ||
| Unknown | 17 (14%) | 6 (22%) | ||
| Dental disease previously diagnosed or treated | No | 58 (48%) | 8 (30%) | .114 |
| Yes | 38 (31%) | 14 (52%) | ||
| Unknown | 25 (21%) | 5 (18%) | ||
| Dental disease category | No dental disease | 26 (21%) | 2 (7%) | .001 |
| Mild | 68 (56%) | 9 (33%) | ||
| Moderate | 15 (12%) | 8 (30%) | ||
| Severe | 11 (9%) | 8 (30%) |
Categories in bold font are the reference categories against which other categories within the variable were compared in the Cox regression analysis.