Table 1. Clinical variables of PTC patients.
| Variables | Female | Male | P value | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total (n = 1,214) | 0–34 (n = 228) | 35–55 (n = 696) | 56– (n = 290) | P value | Total (n = 436) | 0–34 (n = 116) | 35–55 (n = 232) | 56– (n = 88) | P value | ||
| Symptoms (n) a | 98 (8.07) | 9 (3.95) | 59 (8.48) | 30 (10.34) | 0.026 | 28 (6.42) | 6 (5.17) | 14 (6.03) | 8 (9.09) | 0.496 | 0.157 |
| Course (months) | 1.24 | 0.97 | 1.15 | 1.71 | 0.073 | 1.1 | 0.82 | 1.1 | 1.47 | 0.278 | 0.258 |
| Tumour size (%) | |||||||||||
| ≤1 cm | 936 | 163 | 553 | 220 | 320 | 78 | 179 | 63 | |||
| >1cm | 278 (22.9) | 65 (28.51) | 143 (20.55) | 70 (24.14) | 0.039 | 116 (26.61) | 38 (32.76) | 53 (22.84) | 25 (28.41) | 0.13 | 0.119 |
| Nodule number (%) | |||||||||||
| Unifocal (n = 1) | 724 | 159 | 412 | 153 | 291 | 83 | 157 | 51 | |||
| Multifocal (n > 1) | 490 (40.36) | 69 (30.26) | 284 (40.8) | 137 (47.24) | <0.001 | 145 (33.26) | 33 (28.45) | 75 (32.33) | 37 (42.05) | 0.113 | 0.009 |
| LNM (%) | |||||||||||
| No | 786 | 109 | 462 | 215 | 213 | 39 | 124 | 50 | |||
| Yes | 428 (35.26) | 119 (52.19) | 234 (33.62) | 75 (25.86) | <0.001 | 223 (51.15) | 77 (66.38) | 108 (46.55) | 38 (43.18) | 0.001 | <0.001 |
| LNR (%) | 35.8 | 37.95 | 34.97 | 34.99 | 0.21 | 48.48 | 53.92 | 46.94 | 41.9 | 0.041 | <0.001 |
Notes:
LNM, Lymph Node Metastasis; LNR, Lymph node ratio, proportion of positive lymph nodes vs sampled lymph nodes.
a
The number of patients with hoarseness, sore throat, dysphagia, fever, or other symptoms.