Table 1. Univariate relationships between clinical parameters and presence of nodal metastasis.
| Clinical parameter | Cancer absent in nodes(N = 434) | cancer present in nodes(N = 189) | P-value (Chi-Square test) |
|---|---|---|---|
| N (%) | N (%) | ||
| Age | |||
| 40 or below | 18 (64.3) | 10 (35.7) | |
| 41 or more | 415 (70) | 178 (30.0) | 0.52 |
| Sex | |||
| female | 106 (70.7) | 44 (29.3) | |
| male | 328 (69.3) | 145 (30.7) | 0.76 |
| Primary site of cancer | |||
| Buccal mucosa | 239 (76.4) | 74 (23.6) | |
| Tongue | 195 (62.9) | 115 (37.1) | <0.01 |
| Pattern of invasion (POI) | |||
| I | 1 (100) | 0 (0.0) | |
| II | 92 (88.5) | 12 (11.5) | |
| III | 176 (78.2) | 49 (21.8) | |
| IV | 164 (56.2) | 128 (43.8) | <0.01 |
| Size of the tumour (T) | |||
| T1 | 63 (92.6) | 5 (7.4) | |
| T2 | 160 (81.6) | 36 (18.4) | |
| T3 | 99 (60.4) | 65 (39.6) | |
| T4 | 112 (58.0) | 81 (42.0) | <0.01 |
| Depth of invasion (DOI) | |||
| 1 to <2mm | 38 (76.0) | 12 (24.0) | |
| 2 to <3mm | 59 (79.7) | 15 (20.3) | |
| 3 to <4mm | 64 (86.5) | 10 (13.5) | |
| 4 to <5mm | 39 (75.0) | 13 (25.0) | |
| 5+mm | 233 (63.3) | 135 (36.7) | <0.01 |
| Depth (non-censored cases only, n = 385) | |||
| 1 to <2mm | 32 (74.4) | 11 (25.6) | |
| 2 to <3mm | 49 (83.1) | 10 (16.9) | |
| 3 to <4mm | 47 (87.0) | 7 (13.0) | |
| 4 to <5mm | 21 (84.0) | 4 (16.0) | |
| 5+mm | 137 (67.2) | 67 (32.8) | 0.009 |
Percentage (%) is the row percentage. POI type 1 group not used in Chi-Square test due to single person in it. Frequencies may not sum to total shown in column heading due to missing values.