Table 4.

Post-operative nutritional deficiencies within the first 2 years after revisional SADI and RYGB

	Post-SADI	Post-RYGB
	N = 20–47*	N = 29–42*
	Number of deficiencies (%)	Number of deficiencies (%)	P value
Anemia	16 (34%)	11 (26%)	.421
Ferritin	6 (14%)	11 (31%)	.071
Folate	10 (31%)	5 (12%)	.066
Vitamin B12	0	13 (33%)	< .001
Vitamin D	13 (28%)	9 (23%)	.587
Parathyroid hormone	3 (7%)	3 (8%)	.875
Calcium	3 (7%)	2 (5%)	.705
Albumin	5 (12%)	5 (17%)	.525
Vitamin B1	1 (5%)	0	N.A.
Vitamin B6	0	0	N.A.

SADI single anastomosis duodenoileal bypass, RYGB Roux-en-Y gastric bypass

*Dependent on nutritional value