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Table 1 The summary of MTTMJ patients’ clinico-pathologic characteristics

From: Malignant tumours of temporomandibular joint

Variables Disease specific survival (n = 611) Overall survival (n = 734)
Alive (%) Dead (%) P-value Alive (%) Dead (%) P-value
Gender
 Female 198 (64.7%) 108 (35.3%) 0.67 199 (55.6%) 159 (44.4%) 0.711
 Male 203 (66.6%) 102 (33.4%) 203 (54%) 173 (46%)
Age
  ≤ 44 (47) 272 (81%) 64 (19%) 0.000 272 (74.9%) 91 (25.1%) 0.000
  > 44 (47) 129 (46.9%) 146 (53.1%) 130 (35%) 241 (65%)
Age period
 0–19 84 (83.2%) 17 (16.8%) 0.000 84 (77.1%) 25 (22.9%) 0.000
 20–29 78 (83.9%) 15 (16.1%) 78 (79.6%) 20 (20.4%)
 30–39 69 (80.2%) 17 (19.8%) 69 (74.2%) 24 (25.8%)
 40–49 55 (75.3%) 18 (24.7%) 55 (65.5%) 29 (34.5%)
 50–59 55 (66.3%) 28 (33.7%) 55 (36.4%) 46 (45.5%)
 60–69 36 (49.3%) 37 (50.7%) 36 (36.4%) 63 (63.6%)
 70–79 17 (28.3%) 43 (71.7%) 18 (22%) 64 (78%)
 80+ 7 (2.9%) 35 (97.1%) 7 (10.3%) 61 (89.7%)
Race
 Others 59 (79.7%) 15 (20.3%) 0.001 59 (71.1%) 24 (28.9%) 0.000
 Black 88 (73.9%) 31 (26.1%) 88 (65.2%) 47 (34.8%)
 White 254 (60.8%) 164 (39.1%) 255 (49.4%) 261 (50.6%)
Pathological grade
 Grade I 37 (38.5%) 17 (31.5%) 0.140 37 (56.1%) 29 (43.9%) 0.318
 Grade II 70 (69.3%) 31 (30.7%) 71 (56.8%) 54 (43.2%)
 Grade III 40 (53.3%) 35 (46.7%) 40 (45.5%) 48 (54.5%)
 Grade IV 45 (65.2%) 24 (34.8%) 45 (57.7%) 33 (42.3%)
AJCC Stage
 Stage I 59 (92.2%) 5 (7.8%) 0.000 59 (86.8%) 9 (13.2%) 0.000
 Stage II 54 (74.0%) 19 (77.8%) 54 (65.1%) 29 (34.9%)
 Stage III 2 (22.2%) 7 (77.8%) 2 (20%) 8 (80%)
 Stage IV 6 (66.7%) 3 (33.3%) 6 (54.5%) 5 (45.5%)
T stage
 T1 33 (73.3%) 12 (26.7%) 0.324 33 (66%) 17 (34%) 0.721
 T2 121 (81.8%) 27 (18.2%) 121 (72.9%) 45 (27.1%)
 T3 14 (70%) 6 (30%) 14 (70%) 6 (30%)
 T4 1 (50%) 1 (50%) 1 (50%) 1 (50%)
N stage
 N0 155 (82%) 34 (18%) 0.001 155 (74.2%) 54 (25.8%) 0.006
 N1 5 (38.5%) 8 (61.5%) 5 (35.7%) 9 (64.3%)
 NX 9 (69.2%) 4 (30.8%) 9 (60%) 6 (60%)
M stage
 M0 163 (81.1%) 38 (18.9%) 0.003 163 (74.1%) 57 (25.9%) 0.001
 M1 3 (42.9%) 4 (57.1%) 3 (30%) 7 (70%)
 MX 3 (42.9%) 4 (57.1%) 3 (37.5%) 5 (62.5%)
Surgery
 No 31 (40.8%) 45 (59.2%) 0.000 31 (33.7%) 61 (66.3%) 0.000
 Yes 352 (74.9%) 118 (25.1%) 353 (62.8%) 209 (37.2%)
Radiotherapy
 No 305 (70%) 131 (30%) 0.000 305 (57.3%) 227 (42.7%) 0.005
 Yes 86 (53.1%) 76 (46.9%) 84 (45.4%) 101 (54.6%)
Chemotherapy
 No 295 (67.5%) 142 (32.5%) 0.122 295 (55.2%) 239 (44.8%) 0.673
 Yes 106 (60.9%) 68 (39.1%) 107 (53.5%) 93 (46.5%)