Ferric carboxymaltose for anemia in Crohn’s disease patients at a tertiary center: A retrospective observational cohort study

Table 3 Multiple linear regression analysis of clinical and demographic characteristics associated with serum iron, ferritin, and transferrin saturation in Crohn's disease patients

Variables	β value	95%CI	P value
Serum iron levels at baseline
Age at the diagnostic1
A3	50.119	(15.778, 84.459)	0.004
Disease location1
L3	-16.328	(-30.601, -2.055)	0.025
Behavior1
B2	18.357	(4.711, 32.002)	0.008
B3	21.961	(2.931, 40.992)	0.024
Biologic therapy
Yes	-27.271	(-53.623, -0.919)	0.043
Serum ferritin levels after FCM injection
Disease location1
L2	348.460	(56.087, 640.833)	0.019
Behavior1
B3	335.922	(57.389,614.454)	0.018
STAT at baseline
Behavior1
B2	8.033	(1.974, 14.091)	0.009
B3	13.866	(5.762, 21.971)	0.001
Perianal disease
Yes	10.5	(3.907, 17.092)	0.002

¹Montreal classification.

Analysis of multiple linear regression with P < 0.05. n = 25. FCM: Ferric carboxymaltose; STAT: Transferrin saturation.