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Table 1

Clinicopathological features of patients

All cases (%)Cases with SOM (%)Non-SOM (%)P              a
Total68 (100)36 (100)32 (100)
Mean age (yr)+ SD 58.3 ± 14.7 58.4 ± 15.9 58.1 ± 13.6 0.93 
Male sex—no. (%) 35 (51) 17 (47) 18 (56) 0.48 
Tobacco use ever—no. (%) 43 (69)b 22 (63) 21 (78) 0.27 
Stage     
CIS (stage 0) 15 (22) 7 (19) 8 (25) 0.77 
 I and II 33 (49) 19 (53) 14 (44)  
 III and IV 20 (29) 10 (28) 10 (31)  
Histological grade (for 53 invasive SCC)     
 Well or moderately well differentiated 49 (92) 27 (96) 22 (88) 0.33 
 Poorly differentiated 4 (8) 1 (4) 3 (12)  
Mean follow-up time (months)± SD 83 ± 80 64 ± 62 104 ± 93 0.04 
All cases (%)Cases with SOM (%)Non-SOM (%)P              a
Total68 (100)36 (100)32 (100)
Mean age (yr)+ SD 58.3 ± 14.7 58.4 ± 15.9 58.1 ± 13.6 0.93 
Male sex—no. (%) 35 (51) 17 (47) 18 (56) 0.48 
Tobacco use ever—no. (%) 43 (69)b 22 (63) 21 (78) 0.27 
Stage     
CIS (stage 0) 15 (22) 7 (19) 8 (25) 0.77 
 I and II 33 (49) 19 (53) 14 (44)  
 III and IV 20 (29) 10 (28) 10 (31)  
Histological grade (for 53 invasive SCC)     
 Well or moderately well differentiated 49 (92) 27 (96) 22 (88) 0.33 
 Poorly differentiated 4 (8) 1 (4) 3 (12)  
Mean follow-up time (months)± SD 83 ± 80 64 ± 62 104 ± 93 0.04 
a

P was calculated comparing SOM versus non-SOM patients.

b

Smoking information available for 35 SOM and 27 non-SOM cases.

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