Table 4 Results of univariate log-rank analysis of prognostic factors for overall 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) | Overall survival (All, n = 161) | No. of patients (Stage II + III, n = 133) | Overall survival (Stage II + III, n = 133) | ||
|---|---|---|---|---|---|---|
No. of events | P value | No. of events | P value | |||
Bone scan before op | ||||||
Absent | 42 | 35 | 0.158 | 34 | 32 | 0.037* |
Present | 119 | 79 | 99 | 73 | ||
Sex | ||||||
Male | 156 | 113 | 0.064 | 129 | 104 | 0.075 |
Female | 5 | 1 | 4 | 1 | ||
Age | ||||||
<55y/o | 88 | 63 | 0.820 | 71 | 59 | 0.161 |
>55y/o | 73 | 51 | 62 | 46 | ||
Tumor location | ||||||
Upper/middle | 82 | 54 | 0.439 | 66 | 48 | 0.472 |
Lower | 79 | 60 | 67 | 57 | ||
Protocol | ||||||
Op | 95 | 61 | 0.049* | 69 | 53 | 0.347 |
Pre-op CCRT + op | 66 | 53 | 64 | 52 | ||
T stage | ||||||
T1 + 2 | 53 | 26 | <0.001* | 25 | 17 | 0.113 |
T3 + 4 | 108 | 88 | 108 | 88 | ||
N stage | ||||||
Negative | 75 | 39 | <0.001* | 47 | 30 | <0.001* |
Positive | 86 | 75 | 86 | 75 | ||
7thAJCC stage | ||||||
I + II | 80 | 43 | <0.001* | 52 | 34 | <0.001* |
III | 81 | 71 | 81 | 71 | ||
Surgical margin | ||||||
Positive | 12 | 10 | 0.006* | 10 | 10 | <0.001* |
Negative | 149 | 104 | 123 | 95 | ||