Factors associated with sphincter saving procedures: multivariate analysis
| Factor | OR | 95% CI | p3-150 | |
|---|---|---|---|---|
| Period of diagnosis | 1978–1981 | 1 | <0.0001 | |
| 1982–1985 | 1.21 | 0.87–1.67 | ||
| 1986–1989 | 3.42 | 2.47–4.72 | ||
| 1990–1993 | 4.19 | 3.04–5.78 | ||
| Sex | Male | 1 | 0.016 | |
| Female | 1.32 | 1.05–1.65 | ||
| Age (years) | <75 | 1 | 0.046 | |
| ⩾75 | 1.29 | 1.00–1.66 | ||
| Place of residence | Rural | 1 | 0.05 | |
| Other urban | 1.28 | 0.98–1.66 | ||
| Dijon, Caen | 1.35 | 1.04–1.76 | ||
| Area | Côte-d’Or | 1 | 0.0003 | |
| Calvados | 1.5 | 1.2–1.88 |
Logistic regression carried out among patients who underwent a resection of the tumour, excluding 506 cases with unknown treatment, undetermined resection, no resection, or palliative surgery.
↵3-150 Probability for heterogeneity (likelihood ratio test).
OR, odds ratio.