Table 6. Trends in age-standardized incidence rates for breast cancer according to joinpoint analysis (1999–2014).
| AAPC 1999–2014 | Trend 1 | Trend 2 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Period | APC | 95% CI | Period | APC | 95% CI | ||||
| Lower | Higher | Lower | Higher | ||||||
| All breast cancer | +6.1* | 1999–2008 | +7.2* | 6.3 | 8.2 | 2008–2014 | +4.5* | 3.5 | 5.5 |
| Invasive breast cancer | +5.5* | 1999–2007 | +6.7* | 5.5 | 7.9 | 2007–2017 | +4.1* | 3.2 | 5.1 |
| Carcinoma in situ | +13.5* | 1999–2008 | +17.9* | 15.6 | 20.2 | 2008–2014 | +7.3* | 6.0 | 8.6 |
AAPC=average annual percent change (%); APC=annual percent change (%); CI=confident interval.
*The APC or AAPC is significantly different from zero (p<0.05).