Factors associated with resection procedures: multivariate analysis
| Factor | OR | 95% CI | p Value* |
|---|---|---|---|
| Logistic regression carried out among patients treated by surgical or non-surgical procedures, excluding 21 cases with unknown tumour location. | |||
| *Probability for heterogeneity (likelihood ratio test). | |||
| OR, odds ratio; 95% CI, 95% confidence interval. | |||
| Metastatic status | |||
| Yes | 1 | ||
| No | 13.60 | 9.10–18.40 | <0.001 |
| Period of diagnosis | |||
| 1976–1979 | 1 | ||
| 1980–1983 | 1.82 | 1.32–2.50 | |
| 1984–1987 | 4.06 | 2.83–5.81 | |
| 1988–1991 | 6.80 | 4.59–10.10 | |
| 1992–1995 | 5.76 | 3.96–8.39 | |
| 1996–1998 | 7.85 | 4.91–12.60 | <0.001 |
| Age (y) | |||
| ≥75 | 1 | ||
| <75 | 3.18 | 2.52–4.00 | <0.001 |
| Place of residence | |||
| University town | 1 | ||
| Other urban | 1.10 | 0.80–1.51 | |
| Rural | 0.78 | 0.61–0.99 | 0.044 |