Factors associated with adjuvant chemotherapy: multivariate analysis
| Factor | OR | 95% CI | p Value* |
|---|---|---|---|
| Logistic regression carried out among 2359 patients who underwent a curative resection of the tumour, excluding cases with unknown chemotherapy treatment, undetermined resection, no resection or palliative surgery, advanced, or unknown stages. | |||
| *p for heterogeneity (likelihood ratio test). | |||
| OR, odds ratio; 95% CI, 95% confidence interval. | |||
| Stage at diagnosis | |||
| Stage I | 1 | ||
| Stage II | 9.84 | 3.0–32.30 | |
| Stage III | 70.30 | 21.5–230.0 | <0.0001 |
| Period of diagnosis | |||
| 1976–1989 | 1 | ||
| 1990–1993 | 7.09 | 3.64–13.80 | |
| 1994–1998 | 39.90 | 22.0–72.40 | <0.0001 |
| Age (y) | |||
| ≥75 | 1 | ||
| <75 | 10.80 | 6.34–18.30 | <0.0001 |