Table 2.
Proportions of the different sinus compartments that were affected in 100 horses with sinus disease at each of three different centers.
| Compartment affected | Combined N = 300 | Dental sinusitis N = 160 | Non-dental sinusitis N = 140 | X2 Dental vs. Non-Dental |
|---|---|---|---|---|
| RMS | 284 (94.7%) | 157 (98.2%) | 127 (90.7%) | X2 (1) = 6.72 P = 0.009 |
| VCS | 261 (87%) | 140 (87.5%) | 121 (86.4%) | X2 (1) = 0.01 P = 0.918 |
| CMS | 196 (65.3%) | 96 (60%) | 100 (71.4%) | X2 (1) = 3.82 P = 0.051 |
| DCS | 158 (52.7%) | 75 (46.9%) | 83 (59.3%) | X2 (1) = 4.13 P = 0.042 |
| FS | 78 (26%) | 35 (21.9%) | 43 (30.7%) | X2 (1) = 2.59 P = 0.108 |
| ES | 96 (32%) | 44 (27.5%) | 52 (37.1%) | X2 (1) = 2.76 P = 0.096 |
| SPS | 86 (28.7%) | 29 (18.1%) | 57 (40.7%) | X2 (1) = 17.54 P < 0.001 |
X2, Chi-square test with “Yates continuity correction,” significant P-values in bold; RMS, rostral maxillary sinus; VCS, ventral conchal sinus; CMS caudal maxillary sinus; DCS, dorsal conchal sinus; FS, frontal sinus; ES, ethmoidal sinus (also termed the middle conchal sinus); SPS, sphenopalatine sinus.