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Table 4 Current cigar smoking and oral cancer

From: Systematic review of cigar smoking and all cause and smoking related mortality

Study Cohort name Cigar smoker deaths Effect estimate 95% CI Measure Primary/secondary* Adjustment ICD codes
Current Cigar  
Kahn1966 Dorn study 9 4.11 (1.86, 7.84) SMR   Age ICD 7: 140-150
Shanks1998 CPS-I 25 7.92 (5.12, 11.69) IRR Primary Age  
Shanks1998 CPS-I 8 6.58 (2.83, 12.97) IRR Secondary Age  
Shapiro2000 CPS-II 6 4 (1.50, 10.30) HR Primary Age, alcohol, smokeless tobacco ICD 9: 140–141, 143-149
  1. *Primary cigar smoking: current, exclusive cigar smoking with no previous history of cigarette or pipe smoking; secondary cigar smoking: current, exclusive cigar smoking with previous history of cigarette or pipe smoking.