Table 4. Trends in age-standardized incidence rates for breast cancer according to joinpoint analysis (1999–2015).
AAPC 1999–2015 | Trend 1 | Trend 2 | |||||||
---|---|---|---|---|---|---|---|---|---|
Period | APC | 95% CI | Period | APC | 95% CI | ||||
Lower | Higher | Lower | Higher | ||||||
All breast cancer | +6.2* | 1999–2007 | +7.9* | 6.9 | 8.9 | 2007–2015 | +4.5* | 3.5 | 5.5 |
Invasive breast cancer | +5.6* | 1999–2005 | +7.7* | 6.0 | 9.4 | 2005–2015 | +4.4* | 3.6 | 5.1 |
Carcinoma in situ | +13.3* | 1999–2008 | +18.6* | 17.0 | 20.2 | 2008–2015 | +6.9* | 4.8 | 9.0 |
9.0AAPC=average annual percentage change (%); APC=annual percent change (%); CI=confidence interval.
*The APC or AAPC is a significantly different from zero (p<0.05).