Different regression equations relate age to the incidence of Lauren types 1 and 2 stomach cancer in the SEER database: these equations are unaffected by sex or race

Table 1 Schema for acquisition of data from SEER for this study.

DATA
STATISTIC
Statistic: Crude Rates
SELECTION
Case Only: {Site and Morphology.Site recode} = 'Stomach'
Option: Select only malignant behaviour
TABLE
Row: Year of dx, 92–96, 97–01 [Year of diagnosis]
	Men and Women [Sex]
	Stomach cancer types [Histologic Type ICD-O-3]
	Race, Asian or not, no unknown [Race recode Y]
Column: Age recode with <1 year olds
USER DEFINITIONS
	Stomach cancer types [Histologic Type ICD-O-3]
	intestinal = 8144
	non-intestinal = 8142,8145,8490
	Year of dx, 92–96, 97–01 [Year of diagnosis]
	1992–1996 = 1992, 1993, 1994, 1995, 1996
	1997–2001 = 1997, 1998, 1999, 2000, 2001
	Sex [Sex]
	Male = Male
	Female = Female
	Race, Asian or not, no unknown [Race recode Y]
	Asian = Asian or Pacific Islander
	Non-Asian = All other except unknown

ISSN: 1471-2407