Table 3 Results of univariate log-rank analysis of prognostic factors for bone recurrence-free survival in all patients (n = 161) receiving esophagectomy or stage II + III patients (n = 133) receiving esophagectomy
From: Is there a role of whole-body bone scan in patients with esophageal squamous cell carcinoma
Factors | No. of patients (All, n= 161) | Bone recurrence-free survival (All, n = 161) | No. of patients (Stage II + III, n = 133) | Bone recurrence-free survival (Stage II + III, n = 133) | ||
|---|---|---|---|---|---|---|
No. of events | P value | No. of events | P value | |||
Bone scan before op | ||||||
Absent | 42 | 6 | 0.009* | 34 | 6 | 0.003* |
Present | 119 | 4 | 99 | 4 | ||
Sex | ||||||
Male | 156 | 10 | 0.480 | 129 | 10 | 0.475 |
Female | 5 | 0 | 4 | 0 | ||
Age | ||||||
<55y/o | 88 | 4 | 0.417 | 71 | 4 | 0.584 |
>55y/o | 73 | 6 | 62 | 6 | ||
Tumor location | ||||||
Upper/middle | 82 | 4 | 0.514 | 66 | 4 | 0.555 |
Lower | 79 | 6 | 67 | 6 | ||
Protocol | ||||||
Op | 95 | 5 | 0.336 | 69 | 5 | 0.715 |
Pre-op CCRT + op | 66 | 5 | 64 | 5 | ||
T stage | ||||||
T1 + 2 | 53 | 2 | 0.160 | 25 | 2 | 0.757 |
T3 + 4 | 108 | 8 | 108 | 8 | ||
N stage | ||||||
Negative | 75 | 2 | 0.014* | 47 | 2 | 0.100 |
Positive | 86 | 8 | 86 | 8 | ||
7thAJCC stage | ||||||
I + II | 80 | 2 | 0.004* | 52 | 2 | 0.037* |
III | 81 | 8 | 81 | 8 | ||
Surgical margin | ||||||
Positive | 12 | 0 | 0.505 | 10 | 0 | 0.604 |
Negative | 149 | 10 | 123 | 10 | ||