Variables: | Â | Relapse-free survival | Overall survival | ||||
---|---|---|---|---|---|---|---|
 | N | RRa | C.I. 95% | pb | RR | C.I. 95% | p |
Age (risk per year) | 66 | 0.99 | 0.9-1.0 | 0.80 | 0.98 | 0.9-1.1 | 0.23 |
Gender | |||||||
 Female | 5 | 1 |  |  | 1 |  |  |
 Male | 61 | 1.60 | 0.3-28.8 | 0.62 | 0.81 | 0.2-14.8 | 0.84 |
Differentiation | |||||||
 Well-Moderately | 32 | 1 |  |  | 1 |  |  |
 Poorly | 34 | 5.62 | 2.3-15.6 | 0.0001 | 2.82 | 0.9-9.3 | 0.06 |
Site | |||||||
 Glottic | 47 | 1 |  |  | 1 |  |  |
 Transglottic | 19 | 2.57 | 1.1-5.7 | 0.028 | 1.15 | 0.2-3.7 | 0.84 |
T | |||||||
 2 | 36 | 1 |  |  | 1 |  |  |
 3-4 | 30 | 1.64 | 0.7-3.7 | 0.22 | 2.31 | 0.8-7.7 | 0.13 |
Stage | |||||||
 II | 29 | 1 |  |  | 1 |  |  |
 III-IV | 37 | 1.19 | 0.5-2.7 | 0.70 | 2.46 | 0.8-10.9 | 0.14 |
Lymph nodes | |||||||
 Negative | 50 | 1 |  |  | 1 |  |  |
 Positive | 16 | 0.97 | 0.4-2.8 | 0.95 | 1.28 | 0.3-3.9 | 0.69 |
PTHrP | |||||||
 Negative | 37 | 1 |  |  | 1 |  |  |
 Positive | 29 | 4.35 | 1.7-13.1 | 0.0011 | 3.84 | 1.2-17.3 | 0.02 |
PTH1R | |||||||
 Positive | 19 | 1 |  |  | 1 |  |  |
 Negative | 47 | 3.11 | 1.3-8.5 | 0.0085 | 5.64 | 1.5-36.5 | 0.0076 |