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. 2025 Mar 25;35(5):1660–1671. doi: 10.1007/s11695-025-07809-5

Table 6.

Comparison of nutrient outcomes 2 years after surgery between the two groups

SG(n = 29) SADI-S (n = 24) p
12mo HGB (g/L) 138(129–147.5)a 129.5(120–137.5) 0.022*
12mo TP (g/L) 73(69.5–75.2) 70.4 (69.3–74.7) 0.148
12mo ALB (g/L) 43.8(41.9–46.1) 41.8(40.3–44.3) 0.038*
12mo VitD (ng/mL) 18.2 ± 7.7c 11.7 ± 5.1 0.001*
12mo VitB12 (pmol/L) 353(301.3–557.1) 451.6(346.1–641.4) 0.166
12mo FA (ng/mL) 32.8(17.3–45.3) 10.3(4.6–11.7) 0.000*
12mo Ca (mmol/L) 2.3 (2.3–2.4) 2.4(2.3–2.4) 0.078
12mo Fe (mmol/L) 18.6(15.3–20.6) 12.3 (9.7–16.2) 0.001*
12mo Zn (mmol/L) 14.2 ± 2.7 12.0 ± 1.9 0.001*
24mo HGB (g/L) 132(122–149.5) 130.5(120.3–139) 0.204
24mo TP (g/L) 72(70–76.6) 70.4(68.7–72.9) 0.043* 
24mo ALB (g/L) 43.8(42.0–45.8) 41.3(39.3–42.5) 0.003*
24mo VitD (ng/mL) 18.7±7.6 10.2±5.3 0.000*
24mo VitB12 (pmol/L) 386.2(267.7–557.5) 406.3(290.7–627.0) 0.276
24mo FA (ng/mL) 28.2(18.5–39.0) 8.6(4.6–10.5) 0.000*
24mo Ca (mmol/L) 2.33(2.3–2.5) 2.4(2.3–2.5) 0.72
24mo Fe (mmol/L) 16.3 ± 5.2 12.0 ± 3.9 0.002*
24mo Zn (mmol/L) 13.9 ± 2.4 11.5 ± 1.8 0.000*

SG Sleeve gastrectomy, SADI-S Single-anastomosis duodenal-ileal bypass with sleeve gastrectomy, ALB Albumin, TP Total protein, HGB Hemoglobin, FA Folic acid, Ca Calcium, Fe Iron, Zn Zinc

a Median (ranges)

cMean ± standard deviation

p* < 0.05 was considered statistically significant