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Table 2 Biochemical, anthropometric, and body composition parameters before and after RYGB

From: Application of fourier transform infrared vibrational spectroscopy in identifying early biochemical changes in lipid profiles of individuals undergoing Roux-en-y gastric bypass

Parameters

T0

T1

p-value

Reference values

Weight (kg)

114.1 (104.8–129.1)

97.3 (90.2 -106.4)

< 0.001**

-

BMI (kg/m²)

43.9 (41.1–49.6)

37.5 (33.9–42.5)

< 0.001**

-

FFM (kg)

64.2 (57.7–71.1)

57.1 (53.7–63.3)

< 0.001**

-

FM (kg)

52.8 (46.8–65.1)

39.4 (34.9–46.5)

< 0.001**

-

Albumin (g/dL)

4.3 (4.0–4.5)

4.1 (3.9–4.2)

0.002**

3.5–4.8 g/dL

TTR (mg/dL)

23.1 ± 4.7

17.9 ± 5.6

< 0.001*

20–40 mg/dL

AGP (mg/dL)

108.6 ± 38.3

90.3 ± 32.5

0.05*

50–120 mg/dL

CRP (mg/L)

10.9 (5.4–15.6)

3.6 (2.1–6.4)

< 0.001**

< 5 mg/L

AST (U/L)

18.0 (15.5–23.0)

24.0 (20.0–28.0)

< 0.001**

0–32 U/L

ALT (U/L)

25.4 ± 9.3

27.9 ± 10.7

0.271*

0–31 U/L

ALP (U/L)

200.5 (166.0–232.5)

192.2 (169.5–216.5)

0.019**

68–240 U/L

Glucose (mg/dL)

100.0 (91.0–118.5)

90.5 (85.0–100.5)

< 0.001**

78–99 mg/dL

Triglycerides (mg/dL)

149.3 (95.5–180.0)

93.0 (75.5–136.0)

0.002**

< 150 mg/dL

TC (mg/dL)

192.5 (154.5–216.5)

154.5 (134.5–190.5)

0.002**

< 190 mg/dL

HDL (mg/dL)

42.5 (36.0–50.5)

41.0 (34.0–48.0)

0.117**

> 40 mg/dL

LDL (mg/dL)

113.9 (89.2–138.9)

91.9 (76.4–120.7)

0.006**

< 100 mg/dL

  1. N = 29.  RYGB: Roux-en-y gastric bypass. T0: 29.3 ± 23.9 days before RYGB; T1: 81.3 ± 32.9 days after RYGB. BMI: Body Mass Index; FFM: Fat-Free Mass; FM: Fat Mass; TTR: transthyretin; AGP: alpha-1-acid glycoprotein; CRP: C-reactive protein; AST: aspartate aminotransferase; ALT: alanine aminotransferase; ALP: alkaline phosphatase; TC: total cholesterol; HDL: high-density lipoprotein; LDL: low-density lipoprotein. *Paired t-test. **Wilcoxon Signed Rank Test. The values are shown as median (interquartile range) or mean ± standard deviation, according to the data distribution. p ≤ 0.05 was considered statistically significant