Table 5 Current cigar smoking and oral cancer by inhalation level, cigars per day, and duration
From: Systematic review of cigar smoking and all cause and smoking related mortality
| Study | Cohort name | Inhalation level | Cigars per day | Duration (years) | Effect estimate | 95% CI | Measure | Primary/secondary* |
|---|---|---|---|---|---|---|---|---|
| Shanks1998 | CPS-I | 1 to 2 | 2.12 | (0.43, 6.18) | IRR | Primary | ||
| Shanks1998 | CPS-I | 3 to 4 | 8.51 | (3.66, 16.77) | IRR | Primary | ||
| Shanks1998 | CPS-I | 5+ | 15.94 | (8.71, 26.75) | IRR | Primary | ||
| Shanks1998 | CPS-I | 1 to 2 | 4.39 | (0.06, 24.45) | IRR | Secondary | ||
| Shanks1998 | CPS-I | 5+ | 13.73 | (5.50, 28.30) | IRR | Secondary | ||
| Shapiro2000 | CPS-II | 1 to 2 | 0 | (0.00, 0.00) | HR | Primary | ||
| Shapiro2000 | CPS-II | 3+ | 7.6 | (2.90, 19.60) | HR | Primary | ||
| Shanks1998 | CPS-I | None | 6.98 | (4.13, 11.03) | IRR | Primary | ||
| Shanks1998 | CPS-I | Slight | 7.83 | (1.57, 22.88) | IRR | Primary | ||
| Shanks1998 | CPS-I | Moderate-deep | 27.88 | (5.60, 81.46) | IRR | Primary | ||
| Shanks1998 | CPS-I | None | 3.27 | (0.66, 9.56) | IRR | Secondary | ||
| Shanks1998 | CPS-I | Slight | 8.75 | (1.76, 25.58) | IRR | Secondary | ||
| Shanks1998 | CPS-I | Moderate-deep | 24.19 | (2.72, 87.32) | IRR | Secondary | ||
| Shapiro2000 | CPS-II | No inhalation | 3.2 | (0.90, 11.00) | HR | Primary | ||
| Shapiro2000 | CPS-II | Inhalation | 6.5 | (1.40, 29.20) | HR | Primary | ||
| Shapiro2000 | CPS-II | <25 | 0 | (0.00, 0.00) | HR | Primary | ||
| Shapiro2000 | CPS-II | 25+ | 4.6 | (1.60, 13.00) | HR | Primary | ||