Prevalence of Anemia and Related Deficiencies in the First Year following Laparoscopic Gastric Bypass for Morbid Obesity

Table 5

Risk factors for anemia and deficiencies.

		Male	Female	𝑃	100 cm	150 cm	𝑃	BMI > 50	BMI ≤ 50	𝑃	EWL > 70%	EWL < 70%	𝑃
𝑁 patients		96	254		127	233		105	245		132	218
Anemia		17 (18%)	49 (19%)	0.74	25 (20%)	41 (18%)	0.77	18 (17%)	48 (20%)	0.59	24 (18%)	42 (19%)	0.80
MCV	Micro	2 (2%)	22 (9%)	0.001*	7 (6%)	17 (8%)	0.69*	10 (10%)	14 (6%)	0.35	5 (4%)	19 (9%)	0.11*
	Macro	4 (4%)	4 (2%)	0.14*	3 (2%)	5 (2%)	0.89*	3 (3%)	5 (2%)	0.72	4 (3%)	4 (2%)	0.54*
Elevated TIBC		3 (3%)	25 (10%)	0.037*	8 (6%)	20 (9%)	0.38*	5 (5%)	23 (9%)	0.14	7 (5%)	21 (10%)	0.11*
Iron deficiency		16 (17%)	87 (34%)	0.001	68 (31%)	35 (28%)	0.56	40 (38%)	63 (26%)	0.02	40 (30%)	63 (29%)	0.78
Folic acid deficiency		14 (15%)	33 (13%)	0.70	33 (15%)	14 (11%)	0.32	20 (19%)	27 (11%)	0.047	18 (14%)	29 (13%)	0.91
Vitamin B12 deficiency		26 (27%)	112 (44%)	0.004	50 (39%)	88 (40%)	0.99	46 (44%)	92 (38%)	0.27	53 (40%)	85 (39%)	0.82
Total deficiency		46 (48%)	170 (67%)	0.001	137 (61%)	79 (62%)	0.74	74 (71%)	142 (58%)	0.03	82 (62%)	134 (61.5%)	0.90

*Fishers Exact test. Rest was tested using Chi-square.