Table I.
M: F Standardized Incidence Rate Ratios (age-adjusted) in ever (former and current combined) and never-smokers for total lung cancer cases, Lung Adenocarcinoma (AC) and Squamous cell carcinoma (SCC) cases.
| All cases | AC | SCC | ||
|---|---|---|---|---|
| Year | RR (95% CI) | RR (95% CI) | RR (95% CI) | |
| Ever-Smokers | ||||
| 1994 | 1.94 (1.78, 2.12) | 1.87 (1.42, 2.43) | 2.41 (2.09, 2.78) | |
| 1995 | 1.70 (1.55, 1.86) | 1.47 (1.07, 1.93) | 2.50 (2.15, 2.90) | |
| 1996 | 1.66 (1.52, 1.82) | 1.57 (1.19, 2.01) | 1.91 (1.62, 2.23) | |
| 1997 | 1.55 (1.40, 1.70) | 1.26 (0.93, 1.66) | 2.14 (1.81, 2.49) | |
| 1998 | 1.62 (1.47, 1.77) | 1.30 (1.00, 1.65) | 2.28 (1.94, 2.67) | |
| 1999 | 1.54 (1.40, 1.68) | 1.14 (0.87, 1.47) | 2.54 (2.16, 2.96) | |
| 2000 | 1.40 (1.27, 1.54) | 1.04 (0.76, 1.38) | 1.74 (1.46, 2.08) | |
| Never-Smokers | ||||
| 1994 | 1.02 (0.51, 1.72) | 1.43 (0.44, 3.15) | 1.63 (0.51, 3.65) | |
| 1995 | 1.42 (0.74, 2.39) | 1.47 (0.33, 4.61) | 2.20 (0.41, 5.84) | |
| 1996 | 1.69 (0.86, 2.91) | 0.71 (0.12, 3.44) | 3.18 (0.99, 9.31) | |
| 1997 | 0.95 (0.42, 1.73) | 0.39 (0.01, 3.10) | 1.37 (0.33, 4.61) | |
| 1998 | 1.53 (0.83, 2.55) | 0.74 (0.08, 2.33) | 6.00 (1.56, NC*) | |
| 1999 | 1.14 (0.60, 2.04) | 1.39 (0.13, 4.01) | 4.00 (1.09, NC*) | |
| 2000 | 1.22 (0.68, 2.10) | 1.03 (0.19, 2.74) | 2.06 (0.39, 5.48) | |
*
NC: Could not be calculated because of extreme values