Table 4.
Comparative analysis of tumors with and without PPS involvement (univariate analysis).
| Feature | No PPS Involvement |
PPS Involvement | p Values * |
|---|---|---|---|
| Age (median) | |||
| <64 years | 923 (50.16%) | 62 (54.86%) | 0.331 |
| >64 years | 917 (49.84%) | 51 (45.145) | |
| Sex | |||
| Female | 985 (53.54%) | 67 (58.77%) | 0.276 |
| Male | 855 (46.46%) | 47 (41.23%) | |
| Place of residence | |||
| Village | 475 (26.40%) | 26 (27.08%) | 0.126 |
| Town | 629 (34.96%) | 42 (43.76%) | |
| City | 695 (38.64%) | 28 (29.16%) | |
| Tumor size | |||
| <2 cm | 555 (30.26%) | 14 (12.28%) | 0.000 |
| 2–4 cm | 1041 (56.77%) | 57 (50.00%) | |
| >4 cm | 238 (12.97%) | 43 (37.72%) | |
| Malignancy | |||
| No | 1709 (92.88%) | 94 (82.45%) | 0.000 |
| Yes | 131 (7.12%) | 20 (17.55%) | |
| FNAC | |||
| Positive | 858 (71.67%) | 44 (70.96%) | 0.966 |
| Negative/non-diagnostic | 338 (28.23%) | 18 (29.04%) | |
| Histology | |||
| Warthin’s tumor | 802 (43.58%) | 28 (24.56%) | 0.000 |
| Pleomorphic adenoma | 784 (42.61%) | 55 (48.25%) | |
| Other | 254 (13.81%) | 31 (27.19%) | |
| Radicality of resection | |||
| R0 | 1431 (93.11%) | 82 (85.42%) | 0.015 |
| R1 | 85 (5.53%) | 12 (12.50%) | |
| R uncertain | 21 (1.36%) | 2 (2.08%) | |
| Postoperative 7th nerve palsy | |||
| No | 1328 (82.85%) | 42 (46.66%) | 0.000 |
| Yes | 275 (17.15%) | 48 (53.34%) |
FNAC—fine needle aspiration cytology. * p values in bold: statistically significant.