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Table 2 Univariate analysis of lymph node recurrence-free survival (LN-RFS) and distant recurrence-free survival (DRFS) in patients with papillary thyroid carcinoma (PTC) (months, mean ± SE)

From: High ALDH1A1 expression correlates with poor survival in papillary thyroid carcinoma

Variable Case LN-RFS P DRFS P
Gender      
Female 158 63.0 ± 2.0 0.073 72.1 ± 1.6 0.362
Male 89 69.3 ± 2.3   72.9 ± 1.8  
Age      
< 45 139 65.3 ± 1.7 0.172 73.4 ± 1.5 0.216
> 45 108 64.9 ± 2.4   71.1 ± 1.9  
EI      
No 174 66.7 ± 1.7 0.036 73.4 ± 1.2 0.028
Yes 73     
PT status      
1 85 60.4 ± 3.4 0.017 68.1 ± 2.9 0.032
2 64 69.4 ± 2.1   74.1 ± 2.8  
3 82    
4 16 66.2 ± 1.8   70.3 ± 2.3
65.9 ± 1.3   69.4 ± 1.8
60.3 ± 2.5   63.5 ± 2.7
PN status      
0 171 66.9 ± 1.7 0.028 73.3 ± 1.2 0.046
1 76 60.2 ± 3.2   68.6 ± 2.9  
TNM      
1 to 2 133 68.4 ± 2.2 0.047 75.1 ± 1.6 0.012
3 to 4 114 60.6 ± 1.9   64.7 ± 1.6  
ALDH1A1      
Low 116 69.5 ± 2.1 0.007 75.3 ± 1.2 0.008
High 131 61.6 ± 2.2   69.8 ± 1.9  
  1. ALDH1A1 (low, the low expression of ALDH1A1; high, the high expression of ALDH1A1) EI, extrathyroid invasion.