Table 3.
Trend in 1-year 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).
| 1-Year Net Survival, % (95% CI) ‡ | p-Value § | |||
|---|---|---|---|---|
| 1990–2001 | 2002–2008 | 2009–2015 | ||
| Age group * | ||||
| 15–69 years | 86.4 (83.4–88.9) | 87.0 (84.1–89.4) | 85.9 (82.5–88.7) | 0.810 |
| 70–79 years | 82.1 (79.1–84.7) | 82.2 (79.2–84.8) | 79.2 (75.5–82.4) | 0.235 |
| ≥80 years | 73.6 (69.9–76.9) | 69.4 (65.6–72.9) | 72.5 (68.5–76.1) | 0.486 |
| Geographic area † | ||||
| North | 84.2 (82.1–86.1) | 84.0 (81.7–86.1) | 82.6 (79.8–85.0) | 0.427 |
| Centre | 83.1 (78.2–87.0) | 83.6 (76.8–88.5) | 82.9 (75.7–88.2) | 0.310 |
| South | 81.9 (75.6–86.6) | 81.2 (77.5–84.3) | 80.8 (76.7–84.2) | 0.700 |
CI, confidence interval. * Time trends in age-specific 1-year net survival are shown. † Time trends in age-standardised (International Cancer Survival Standard-1 weights) 1-year net survival are shown. ‡ Numbers at risk are provided in the ‘Total’ column in Table 1. § 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 net survival.