Table 2.

Poisson regression for multivariate analysis of GIST incidence.

	Coefficient $\widehat{\beta }$	IRR	P value	95% CI
Gender
Female	Reference
Male	−0.0421	0.9588	0.4520	0.8593	1.0698
Diagnosis year	0.1130	1.1196	0.0000	1.0767	1.1643
Location
Stomach	Reference
Intestine	−0.6146	0.5409	0.0000	0.4801	0.6093
Others	−2.1259	0.1193	0.0000	0.0961	0.1481