Table 3.
Estimates in factor analysis model (unstandardised) for eight cancer sites related to both tobacco smoking and alcohol consumption in a study of 52 occupational groups of men from the Norwegian national 1970 census, followed for cancer 1971–1991
| Description of estimate | Estimates | 95% CIa |
|---|---|---|
| Effect of latent factor ‘TobAlc’, i.e., the combined effect of tobacco and alcohol, on cancer incidences (factor loadings) | ||
| (1) Tongue | 1.10 | 0.85, 1.34 |
| Constant | 0.03 | −0.15, 0.20 |
| (2) Mouth | 0.74 | 0.55, 0.93 |
| Constant | 0.05 | −0.07, 0.17 |
| (3) Pharynx | 1.00 | Fixed |
| Constant | 0.04 | −0.11, 0.19 |
| (4) Oesophagus | 0.79 | 0.63, 0.95 |
| Constant | 0.05 | −0.07, 0.17 |
| (5) Colon | 0.17 | 0.08, 0.27 |
| Constant | 0.04 | −0.01, 0.08 |
| (6) Rectum | 0.15 | 0.07, 0.23 |
| Constant | 0.03 | −0.01, 0.07 |
| (7) Liver | 0.74 | 0.57, 0.92 |
| Constant | 0.05 | −0.07, 0.17 |
| (8) Larynx | 0.74 | 0.55, 0.93 |
| Constant | 0.04 | −0.08, 0.16 |
| Effect of site factor colon/rectum on incidence of rectum cancer | 0.76 | 0.43, 1.08 |
| Variances of ‘TobAlc’ common factor and site factors | ||
| TobAlc | 0.215 | 0.128, 0.361 |
| Colon/rectum | 0.010 | 0.005, 0.020 |
| Larynx | 0.018 | 0.005, 0.061 |
aConfidence interval