Table 3.

Annual and average annual percent change in gastric cancer incidence rates among persons <50 years by demographic characteristics: USCS Registry Data 1999–2013

Characteristics	Year	APC (95% CI)	P-value	AAPC (95% CI)	P-value
Overall	1999 to 2013	0.89 (0.61-1.16)	<0.001	0.89 (0.61-1.16)	<0.001
Sex
Male	1999 to 2013	0.14 (−0.23, 0.52)	0.421	0.14 (−0.23, 0.52)	0.421
Female	1999 to 2013	1.81 (1.40, 2.22)	<0.001	1.81 (1.40, 2.22)	<0.001
Race/ethnicity
Non-Hispanic White	1999 to 2013	0.50 (0.08, 0.91)	0.023	0.50 (0.08, 0.91)	0.023
Black	1999 to 2013	−1.03 (−1.63, −0.43)	0.003	−1.03 (−1.63, −0.43)	0.003
Hispanic	1999 to 2013	0.16 (−0.27, 0.58)	0.442	0.16 (−0.27, 0.58)	0.442
American Indian/Alaska Native	1999 to 2013	−0.09 (−2.78, 2.68)	0.946	−0.09 (−2.78, 2.68)	0.946
Asian or Pacific Islander	1999 to 2013	−1.92 (−2.86, −0.96)	0.001	−1.92 (−2.86, −0.96)	0.001
Region
Northeast	1999 to 2013	0.63 (0.13, 1.12)	0.017	0.63 (0.13, 1.12)	0.017
Midwest	1999 to 2013	1.59 (0.78, 2.40)	0.001	1.59 (0.78, 2.40)	0.001
South	1999 to 2013	0.47 (−0.03, 0.97)	0.061	0.47 (−0.03, 0.97)	0.061
West	1999 to 2013	0.96 (0.61, 1.32)	<0.001	0.96 (0.61, 1.32)	<0.001

APC, annual percent change; AAPC, average annual percent change; CI, confidence interval; USCS, United States Cancer Statistics.