Table 4.
Trend in 2-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).
| 2-Year Net Survival, % (95% CI) ‡ | p-Value § | |||
|---|---|---|---|---|
| 1990–2001 | 2002–2008 | 2009–2015 | ||
| Age group * | ||||
| 15–69 years | 74.9 (71.2–78.2) | 75.3 (71.7–78.5) | 76.7 (72.6–80.2) | 0.628 |
| 70–79 years | 71.4 (67.9–74.6) | 68.4 (64.8–71.7) | 65.7 (61.4–69.7) | 0.037 |
| ≥80 years | 52.8 (48.6–56.9) | 53.1 (48.8–57.2) | 55.6 (51.0–59.9) | 0.606 |
| Geographic area † | ||||
| North | 73.0 (70.4–75.4) | 72.4 (69.5–75.1) | 72.3 (69.1–75.3) | 0.842 |
| Centre | 71.2 (65.3–76.2) | 68.0 (60.0–74.8) | 69.3 (59.5–77.2) | 0.519 |
| South | 69.6 (62.5–75.5) | 67.2 (62.9–71.1) | 67.0 (62.2–71.4) | 0.708 |
CI, confidence interval. * Time trends in age-specific 2-year net survival are shown. † Time trends in age standardised (International Cancer Survival Standard-1 weights) 2-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.