Variables | Cut-off point 45âyears old | Cut-off point 55âyears old | ||||
---|---|---|---|---|---|---|
PTC patients <â 45âyears old (nâ=â193) | PTC patients >â 45âyears old (nâ=â330) | p-value | PTC patients < 55âyears old (nâ=â306) | PTC patients >â 55âyears old (nâ=â217) | p-value | |
Age (years) | 33.49Â +Â 7.51 | 59.67Â +Â 9.42 | <â0.0001a | 39.65Â +Â 10.22 | 64.61Â +Â 7.61 | <â0.0001a |
Sex: | Â | Â | 0.460 | Â | Â | 0.099 |
âFemale | 171 (88.6) | 285 (86.4) | Â | 273 (89.2) | 183 (84.3) | Â |
âMale | 22 (11.4) | 45 (13.6) | Â | 33 (10.8) | 34 (15.7) | Â |
Diagnosis of thyroid malignancy: | Â | Â | 0.014a | Â | Â | 0.038a |
âBefore surgery | 131 (67.9) | 188 (57.0) | Â | 198 (64.7) | 121 (55.8) | Â |
âAfter surgery | 62 (32.1) | 142 (43.0) | Â | 108 (35.3) | 96 (44.2) | Â |
Type of surgery: | Â | Â | 0.463 | Â | Â | 0.986 |
âTotal | 137 (71.0) | 244 (73.9) | Â | 223 (72.9) | 158 (72.8) | Â |
âPartial | 56 (29.0) | 86 (26.1) | Â | 83 (27.1) | 59 (27.2) | Â |
Reoperation: | Â | Â | 0.510 | Â | Â | 0.687 |
âNo | 140 (72.5) | 248 (75.2) | Â | 229 (74.8) | 159 (73.3) | Â |
âYes | 53 (27.5) | 82 (24.8) | Â | 77 (25.2) | 58 (26.7) | Â |
pTNM stage: | Â | Â | 0.004a | Â | Â | 0.0007a |
âI | 172 (89.1) | 261 (79.1) | Â | 265 (86.6) | 168 (77.4) | Â |
âII | 20 (10.4 | 47 (14.2) | Â | 36 (11.8) | 31 (14.3) | Â |
âIII | 1 (0.5) | 14 (4.2) | Â | 5 (1.6) | 10 (4.6) | Â |
âIV | 0 (0.0) | 8 (2.4) | Â | 0 (0.0) | 8 (3.7) | Â |
Tumor stage (pT): | Â | Â | 0.055 | Â | Â | 0.013a |
âpT1a | 72 (37.3) | 136 (41.2) | Â | 120 (39.2) | 88 (40.6) | Â |
âpT1b | 101 (52.3) | 135 (40.9) | Â | 150 (49.0) | 86 (39,6) | Â |
âpT2 | 18 (9.3) | 43 (13.0) | Â | 32 (10.5) | 29 (13.4) | Â |
âpT3 | 1 (0.5) | 8 (2.4) | Â | 3 (1.0) | 6 (2.7) | Â |
âpT4a | 0 (0.0) | 3 (0.9) | Â | 0 (0.0) | 3 (1.4) | Â |
âpT4b | 1 (0.5) | 5 (1.5) | Â | 1 (0.3) | 5 (2.3) | Â |
Lymph node metastasis (pN): | Â | Â | <â0.0001a | Â | Â | <â0.0001a |
âpN0 | 162 (83.9) | 188 (57.0) | Â | 250 (81.7) | 100 (46.1) | Â |
âpN1a | 26 (13.5) | 119 (36.1) | Â | 49 (16.0) | 96 (44.2) | Â |
âpN1b | 2 (1.0) | 4 (1.2) | Â | 3 (1.0) | 3 (1.4) | Â |
âpNx | 3 (1.6) | 19 (5.7) | Â | 4 (1.3) | 18 (8.3) | Â |
Distant metastasis (pM): | Â | Â | 0.002a | Â | Â | <â0.0001a |
âpM0 | 178 (92.2) | 272 (82.4) | Â | 276 (90.2) | 174 (80.2) | Â |
âpM1 | 0 (0.0) | 19 (5.8) | Â | 0 (0.0) | 19 (8.8) | Â |
âpMx | 15 (7.8) | 39 (11.8) | Â | 30 (9.8) | 24 (11.0) | Â |