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Table 9 Current cigar smoking and stomach cancer by inhalation level, cigars per day, duration, and age started smoking cigars

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

Study Cohort name Inhalation level Cigars per day Duration (years) Age started cigars (years) Effect estimate 95% CI P-trend Measure
Chao2002 CPS-II   1 to 4    1.68 (0.95, 2.97)   HR
Chao2002 CPS-II   5+    4.2 (2.32, 7.60) 0.746 HR
Chao2002 CPS-II None     2.08 (1.22, 3.57)   HR
Chao2002 CPS-II Slight to deep     3.93 (1.92, 8.04)   HR
Chao2002 CPS-II    ≤39   2.42 (1.36, 4.28)   HR
Chao2002 CPS-II    ≥40   2.55 (1.32, 4.94) 0.079 HR
Chao2002 CPS-II     ≤19 2.78 1.23 6.28   HR
Chao2002 CPS-II     20-29 3.01 1.65 5.49   HR
Chao2002 CPS-II     ≥30 1.74 0.71 4.24 0.617 HR