Fig. (2) Trend and Annual Percent Change (APC) of Cervical Cancer Diagnosis Among Delivery-Related Discharges in the United States by Maternal Age Group, HCUP-NIS, 1998-2009. APC = annual percent change, point estimate (95% confidence interval). Vertical axis: diagnosed cervical cancer per 100,000 discharges. Horizontal axis: year of discharge. *The APC for the joinpoint segment is statistically significantly different from zero (p<0.05).