Table 5.
Trend in 5|2-year conditional net survival from vulvar squamous cell carcinoma by age group at diagnosis and geographic area. Italy, 1990–2015 (total resident female population 15,358,161 in 2015).
| 5|2-Year Conditional Net Survival | p-Value § | ||||||
|---|---|---|---|---|---|---|---|
| 1990–2001 | 2002–2008 | 2009–2015 | |||||
| No. at Risk | % (95% CI) | No. at Risk | % (95% CI) | No. at Risk | % (95% CI) | ||
| Age group * | |||||||
| 15–69 years | 457 | 87.9 (84.2–90.8) | 482 | 85.4 (81.7–88.5) | 360 | 91.8 (87.7–94.6) | 0.351 |
| 70–79 years | 562 | 82.2 (77.7–85.8) | 525 | 84.1 (79.7–87.7) | 341 | 84.2 (77.9–88.8) | 0.694 |
| ≥80 years | 349 | 81.8 (71.1–88.8) | 343 | 75.6 (66.3–82.7) | 314 | 76.5 (65.6–84.3) | 0.654 |
| Geographic area † | |||||||
| North | 994 | 87.7 (84.5–90.3) | 834 | 86.6 (83.2–89.3) | 631 | 88.5 (84.3–91.7) | 0.434 |
| Centre | 250 | 81.1 (73.2–86.8) | 169 | 84.0 (73.3–90.7) | 94 | 82.1 (68.6–90.1) | 0.736 |
| South | 124 | 80.5 (69.1–88.1) | 347 | 79.3 (73.5–84.0) | 290 | 83.0 (76.0–88.2) | 0.224 |
CI, confidence interval. * Time trends in age-specific 5|2-year conditional net survival are shown. † Time trends in age-standardised (International Cancer Survival Standard-1 weights) 5|2-year conditional net survival are shown. § p-values are for the Wald test for trend in the exponential of the period of diagnosis coefficient entered as a continuous regressor in a Poisson regression model for conditional net survival.