Table 4.

Logistic regression analysis of risk factors for AG and its grading

Dependent variable	Variable	P-value	OR	95% CI
				Lower	Upper
AG	Serum folate deficiency	0.057	4.293	0.960	19.197
	Serum vitamin B12 deficiency	< 0.001	57.247	25.446	128.789
	Serum ferritin deficiency	0.151	1.871	0.796	4.398
	Anemia	0.041	2.910	1.047	8.085
The grading of AG	Gender	0.011	0.433	0.228	0.824
	Age	0.001	2.592	1.452	4.630
	Serum vitamin B12 deficiency	0.029	2.029	1.073	3.836
	Anemia	0.002	3.081	1.534	6.190