Table 4 Logistic regression analysis of risk factors for AG and its grading

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