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Table 3 Table displaying the results of the data analysis pertaining to primary & secondary outcomes

From: Hypoglycemia rates and glycemic hormonal response after laparoscopic Roux-en-Y gastric bypass versus sleeve gastrectomy: a meta-analysis of comparative studies

Outcome

Units

Pooled analysis

Post-2018

Pre-2018

Pt. matching

No pt. matching

DM2 pts included

DM2 pts excluded

ROBINS-I: Low

ROBINS-I: Moderate

ROBINS-I: Serious

ROBINS-I: Critical

PBSH (OGTT)

RR = 1.50 [1.20; 1.87]

RR = 1.34 [0.87; 2.05]

RR = 1.56 [1.20; 2.03]

RR = 1.54 [0.83; 2.85]

RR = 1.49 [1.17; 1.90]

RR = 1.21 [0.43; 3.42]

RR = 1.51 [1.20; 1.90]

RR = 2.09 [0.98; 4.46]

RR = 1.47 [1.12; 1.93]

RR = 1.44 [0.87; 2.40]

RR = 1.21 [0.43; 3.42]

PBSH (CGM)

RR = 1.29 [0.55; 3.02]

RR = 1.57 [0.49; 5.02]

RR = 0.75 [0.30; 1.85]

RR = 0.75 [0.30; 1.85]

RR = 1.57 [0.49; 5.02]

RR = 6.15 [2.01; 18.80]

RR = 0.90 [0.65; 1.25]

RR = 0.75 [0.30; 1.85]

RR = 0.75 [0.46; 1.20]

RR = 2.43 [0.46; 12.75]

PBSH (Q)

RR = 1.99 [1.38; 2.86]

RR = 1.07 [0.61; 1.89]

RR = 2.31 [1.75; 3.05]

RR = 6.88 [0.36; 130.33]

RR = 1.95 [1.35; 2.82]

RR = 2.14 [1.55; 2.94]

RR = 1.95 [0.80; 4.74]

RR = 6.88 [0.36; 130.33]

RR = 1.75 [0.67; 4.58]

RR = 2.14 [1.55; 2.94]

Fasting Glucose

mg/dl

MD = 1.11 [− 1.54; 3.76]

MD = 1.34 [− 38.64; 41.33]

MD = 0.71 [− 1.98; 3.41]

MD = − 1.08 [− 4.37; 2.21]

MD = 1.63 [− 1.51; 4.77]

MD = 5.73 [− 31.01; 42.47]

MD = 0.80 [− 2.42; 4.02]

MD = − 1.08 [− 4.37; 2.21]

MD = 1.48 [− 2.10; 5.07]

MD = 1.34 [− 38.64; 41.31]

Δ[Fasting Glucose]

mg/dl

MD = 1.82 [− 2.09; 5.72]

MD = 1.80 [1.04; 2.56]

MD = 2.13 [− 5.96; 10.22]

MD = 0.00 [− 0.63; 0.63]

MD = 2.56 [− 1.70; 6.82]

MD = 3.76 [− 90.21; 97.74]

MD = 1.69 [− 2.49; 5.87]

MD = 0.00 [− 0.63; 0.63]

MD = 3.42 [− 13.52; 20.36]

MD = 1.80 [1.04; 2.56]

MD = 1.11 [− 1.54; 3.76]

Fasting Insulin

pmol/l

MD = 1.55 [− 20.94; 24.04]

MD = − 5.89 [− 97.96; 86.17]

MD = 17.09 [− 23.04; 57.21]

MD = 1.55 [− 20.94; 24.04]

MD = − 5.75 [− 370.35; 358.85]

MD = 1.60 [− 41.69; 44.90]

MD = 17.09 [− 23.04; 57.21]

MD = − 5.89 [− 97.96; 86.17]

Δ[Fasting Insulin]

pmol/l

MD = 15.12 [− 58.47; 88.70]

MD = 48.00 [44.67; 51.33]

MD = 1.95 [− 121.64; 125.54]

MD = 15.12 [− 58.47; 88.70]

MD = − 0.84 [− 659.62; 657.95]

MD = 29.10 [− 212.07; 270.26]

MD = 1.95 [− 121.64; 125.54]

MD = 48.00 [− 44.67; 51.33]

1-h OGTT Glucose

mg/dl

MD = 5.95 [− 6.28; 18.17]

MD = 1.86 [− 111.44; 115.16]

MD = 16.33 [− 9.52; 42.18]

MD = − 20.60 [− 65.94; 24.74]

MD = 7.65 [− 3.13; 18.43]

MD = 24.01 [− 108.08; 156.09]

MD = 4.59 [− 16.70; 25.88]

MD = 7.56 [− 24.37; 39.49]

MD = 5.40 [− 7.49; 18.29]

Δ[1-h OGTT Glucose]

mg/dl

MD = 9.58 [− 4.96; 24.12]

MD = 14.37 [11.51; 17.24]

MD = − 3.98 [− 41.31; 33.35]

MD = 12.50 [− 7.70; 32.70]

MD = 6.40 [− 6.28; 18.17]

MD = − 3.98 [− 41.31; 33.35]

MD = 14.37 [11.51; 17.24]

MD = 2.97 [− 22.71; 28.64]

MD = 14.40 [11.97; 16.83]

2-h OGTT Glucose

mg/dl

MD = − 10.54 [− 16.63; − 4.45]

MD = − 10.29 [− 53.89; 33.31]

MD = − 10.98 [− 28.15; 6.20]

MD = − 19.40 [− 44.98; 6.18]

MD = − 9.79 [− 16.56; − 3.01]

MD = 0.88 [− 92.50; 94.26]

MD = − 11.19 [− 20.57; − 1.81]

MD = − 12.47 [− 23.58; –1.36]

MD = − 9.00 [− 18.64; 0.64]

Δ[2-h OGTT Glucose]

mg/dl

MD = − 12.67 [− 39.66; 14.33]

MD = − 5.81 [− 198.88; 187.26]

MD = − 23.48 [− 61.10; 14.14]

MD = − 21.40 [− 31.14; − 11.66]

MD = − 9.80 [− 58.49; 38.90]

MD = − 23.48 [− 61.10; 14.14]

MD = − 5.81 [− 198.88; 187.26]

MD = − 21.94 [− 27.28; − 16.59]

MD = 9.00 [7.26; 10.74]

1-h OGTT Insulin

pmol/l

MD = 2.77 [− 47.18; 52.72]

MD = − 18.12 [− 263.70; 227.46]

MD = 72.81 [− 1378.40; 1524.03]

MD = − 9.80 [− 84.01; 64.41]

MD = 5.64 [− 83.77; 95.06]

MD = 72.81 [− 1378.40; 1524.03]

MD = − 18.12 [− 263.70; 227.46]

MD = 5.12 [− 69.73; 79.97]

MD = − 63.00 [− 235.31; 109.31]

 

Δ[1-h OGTT Insulin]

pmol/l

MD = 139.26 [− 150.48; 428.99]

MD = 97.98 [− 767.31; 963.27]

MD = 190.97 [− 2434.33; 2816.27]

MD = 29.80 [0.57; 59.03]

MD = 179.04 [− 330.72; 688.79]

MD = 190.97 [− 2434.33; 2816.27]

MD = 97.98 [− 767.31; 963.27]

MD = 133.58 [− 424.63; 691.78]

MD = 166.00 [138.21; 193.79]

2-h OGTT Insulin

pmol/l

MD = − 43.61 [− 111.76; 24.54]

MD = − 48.84 [− 508.65; 410.96]

MD = − 40.51 [− 546.69; 465.67]

MD = − 13.60 [− 49.58; 22.38]

MD = − 58.69 [− 173.51; 56.13]

MD = − 40.51 [− 546.69; 465.67]

MD = − 48.84 [− 508.65; 410.96]

MD = − 18.83 [− 72.77; 35.10]

MD = − 86.00 [− 128.74; − 43.26]

Δ[2-h OGTT Insulin]

pmol/l

MD = 51.89 [− 121.98; 225.76]

MD = 96.01 [− 1313.11; 1505.12]

MD = − 3.75 [− 419.93; 412.44]

MD = − 14.80 [− 33.75; 4.15]

MD = 74.83 [− 228.23; 377.88]

MD = − 3.75 [− 419.93; 412.44]

MD = 96.01 [− 1313.11; 1505.12]

-

MD = − 19.50 [− 55.78; 16.78]

MD = 207.00 [184.26; 229.74]

Male pts

OR = 0.63 [0.28; 1.41]

WL

Kg

MD = − 3.84 [− 7.06; -0.63]

MD = − 2.93 [− 8.82; 2.96]

MD = − 5.51 [− 7.72; -3.29]

MD = − 3.99 [− 36.27; 28.29]

MD = − 2.99 [− 5.32; -0.66]

MD = − 1.75 [− 105.94; 102.44]

MD = − 3.92 [− 9.15; 1.32]

MD = − 5.53 [− 6.53; -4.53]

MD = − 0.34 [− 13.82; 13.14]

MD = − 3.00 [− 4.14; -1.86]

Δ[BMI]

Kg/m2

MD = − 1.49 [− 1.86; -1.12]

MD = − 1.08 [− 2.85; 0.69]

MD = − 1.45 [− 1.81; -1.10]

MD = − 0.68 [− 12.95; 11.58]

MD = − 1.62 [− 2.12; -1.13]

MD = − 1.05 [− 2.71; 0.61]

MD = − 1.53 [− 2.04; -1.02]

MD = − 1.41 [− 1.68; -1.14]

MD = − 1.07 [− 3.10; 0.97]

MD = − 1.40 [− 3.44; 0.64]

EBWL

%

MD = − 3.15 [− 12.05; 5.74]

MD = − 3.15 [− 12.05; 5.74]

MD = − 0.60 [− 19.97; 18.77]

MD = − 3.37 [− 18.55; 11.81]

MD = 3.30 [− 2.28; 8.88]

MD = − 7.71 [− 10.55; -4.86]

MD = − 0.60 [− 19.97; 18.77]

MD = − 3.37 [− 18.55; 11.81]

Δ[WC]

cm

MD = − 0.75 [− 61.49; 59.98]

HbA1c

%

MD = 0.15 [− 0.12; 0.42]

MD = 0.03 [− 0.93; 1.00]

MD = 0.28 [− 0.43; 1.00]

MD = 0.03 [− 0.10; 0.16]

MD = 0.23 [− 0.17; 0.63]

MD = 0.35 [− 0.10; 0.81]

MD = 0.01 [− 0.17; 0.19]

MD = 0.03 [− 0.10; 0.16]

MD = 0.50 [0.50; 0.50]

MD = 0.03 [− 0.93; 1.00]

HOMA-IR

MD = − 0.09 [− 1.23; 1.05]

Δ[HOMA-IR]

MD = 1.82 [− 6.51; 10.15]

HG events

10-d average

MD = 2.59 [− 24.68; 29.85]

Peak Glucose (OGTT)

mg/dl

MD = 49.11 [16.12; 82.10]

MD = 53.22 [27.83; 78.61]

MD = 38.13 [− 267.82; 344.08]

MD = 49.11 [16.12; 82.10]

MD = 62.00 [28.26; 95.74]

MD = 45.14 [− 14.42; 104.69]

-

MD = 38.13 [− 267.82; 344.08]

MD = 53.22 [27.83; 78.61]

Time to Peak Glucose (OGTT)

min

MD = 6.27 [− 20.98; 33.51]

-

Nadir Glucose (OGTT)

mg/dl

MD = − 5.70 [− 10.03; -1.37]

MD = − 3.90 [− 17.30; 9.49]

MD = − 7.26 [− 33.23; 18.71]

-

MD = 5.70 [− 10.03; − 1.37]

MD = − 5.00 [− 11.86; 1.86]

MD = − 5.88 [− 13.90; 2.13]

MD = − 7.26 [− 33.23; 18.71]

MD = − 3.90 [− 17.30; 9.49]

Peak–Nadir glycemic range

mg/dl

MD = 52.22 [18.25; 86.19]

MD = 60.82 [− 10.98; 132.63]

MD = 43.15 [− 237.51; 323.82]

-

MD = 52.22 [18.25; 86.19]

MD = 67.00 [60.02; 73.98]

MD = 47.37 [− 10.28; 105.03]

MD = 43.15 [− 237.51; 323.82]

MD = 60.82 [− 10.98; 132.63]

C-peptide

ng/ml

MD = − 0.80 [− 15.57; 13.97]

Δ[C-peptide]

ng/ml

MD = 1.34 [− 36.78; 39.45]

1 h/fasting Glucose Ratio

MD = 0.12 [− 1.75; 2.00]

Δ[1 h/fasting Glucose Ratio]

MD = 0.04 [− 0.59; 0.67]

1 h/2 h Glucose Ratio

MD = 0.24 [− 1.36; 1.84]

Δ[1 h/2 h Glucose Ratio]

MD = 0.33 [− 1.70; 2.37]

1 h/fasting Insulin Ratio

MD = 5.97 [− 37.77; 49.70]

Δ[1 h/fasting Insulin Ratio]

MD = 8.43 [− 21.39; 38.25]

1 h/2 h Insulin Ratio

MD = 4.08 [− 23.87; 32.03]

Δ[1 h/2 h Insulin Ratio]

MD = 4.70 [− 23.26; 32.65]

  1. The related findings are presented as the comparative effect between RYGB and LSG, along with the corresponding 95% confidence interval (CI95%).
  2. RYGB Roux-en-Y gastric bypass, LSG laparoscopic sleeve gastrectomy, PBSH post-bariatric surgery hypoglycemia, OGTT oral glucose tolerance test, MMTT mixed-meal tolerance test, CGM continuous glucose monitoring, Q questionnaires, pts patients, WL weight loss, BMI body mass index, EBWL excess body weight loss, WC waist circumference, HbA1c glycosylated hemoglobin, HOMA-IR homeostatic model assessment for insulin resistance, HG events hypoglycemic events. Note that the symbol “Δ” indicates the change from baseline levels. The statistically significant findings are indicated in bold, while estimates from individual studies are presented in italics