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Table 1 Demographic and clinical data of the study group

From: Association of p21 SNPs and risk of cervical cancer among Chinese women

  Patients (n=393) Controls (n=434) Pa
  No. (%) No. (%)  
Age    
 ≤35 82 (20.9) 105 (24.4) 0.377
 36-50 219 (55.7) 241 (55.5)  
 >50 92 (23.4) 88 (20.3)  
Smoking    
 Never 371 (94.4) 419 (96.5) 0.177
 Ever 22 (5.6) 15 (3.5)  
HPV status    
HPV+ 351 (89.3) 0 (0)  
HPV- 42 (10.7) 434 (100)  
Clinical stageb    
 Stage 0 213 (54.2)   
 Stage I 138 (35.1)   
 Stage II 34 (8.7)   
 Stage III 7 (1.8)   
 Stage IV 1 (0.3)