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Table 6 Marginal effects during pre-intervention, intervention, post-intervention adjusted by gender and age using GEE. Sao Paulo (Brazil), 2018

From: Impacts of bariatric surgery in health outcomes and health care costs in Brazil: Interrupted time series analysis of multi-panel data

Health Outcomes Characteristics Dy/dx 95%CI P
BMI Pre 0.003 (0.001; 0.005) <0.001
Int 0.803 (0.006; 0.154) 0.033
Post -0.0006 (-0.0008; -0.0004) <0.001
Gender (female) -0.005 (-0.034; 0.024) 0.744
Age 0.0007 (-2.855; 3.001) 0.105
Weight Pre 0.002 (-0.01; -0.01) 0.804
Int -58.404 (-69.9; -46.9) <0.001
Post 0.086 (0.06; -0.1) <0.001
Gender (female) -4.286 (-5.29; -3.27) <0.001
Age -0.12 (-0.15; -0.08) <0.001
Blood pressure Pre -0.002 (-0.005; 0.001) 0.167
Int 0.522 (-1.66; 2.71) 0.640
Post -0.006 (-0.01; -0.001) 0.007
Gender (female) 0.221 (-1.6; 2.04) 0.812
Age 0.007 (-0.04; 0.06) 0.808
Cholesterol Pre -0.03 (-0.04; -0.01) <0.001
Int 6.047 (-0.78; 12.87) 0.083
Post 0.046 (0.03; 0.06) <0.001
Gender (female) 9.214 (7.43; 10.98) <0.001
Age 0.121 (0.06; 0.17) <0.001
VLDL Pre 0.007 (0.003; 0.01) <0.001
Int 1.784 (0.14; 3.42) 0.033
Post -0.014 (-0.01; -0.01) <0.001
Gender (female) -0.108 (-0.75; 0.54) 0.744
Age 0.016 (-0.003; 0.03) 0.105
LDL Pre -0.017 (-0.02; -0.006) 0.002
Int -1.776 (-7.95; 4.39) 0.573
Post 0.033 (0.01; 0.04) <0.001
Gender (female) 6.900 (5.58; 8.21) <0.001
Age -0.039 (-0.07; -0.0001) 0.049
HDL Pre 0.022 (0.01; 0.02) <0.001
Int -8.427 (-10.16; -6.69) <0.001
Post -0.005 (-0.008; -0.0006) 0.023
Gender (female) 1.125 (0.14; 2.1) 0.024
Age 0.092 (0.06; 0.12) <0.001
Triglycerides Pre 0.051 (0.04; 0.06) <0.001
Int -6.802 (-11.98; -1.61) 0.01
Post -0.111 (-0.12; -0.09) <0.001
Gender (female) 6.805 (5.27; 8.33) <0.001
Age 0.18 (0.13; 0.22) <0.001
Insulin Pre 0.014 (0.01; 0.01) <0.001
Int -7.207 (-9.05; -5.35) <0.001
Post -0.017 (-0.02; 0.01) <0.001
Gender (female) 0.207 (-0.3; 0.71) 0.427
Age -0.001 (-0.01; 0.01) 0.885
Glucose-linked haemoglobin Pre 0.013 (0.003; 0.02) 0.007
Int -3.227 (-8.41; 1.96) 0.223
Post -0.051 (-0.06; 0.03) <0.001
Gender (female) 4.468 (2.96; 5.97) <0.001
Age -0.011 (-0.05; 0.03) 0.643
Fasting glucose Pre 0.019 (0.006; 0.03) 0.003
Int 8.873 (1.76; 15.98) 0.014
Post -0.095 (-0.11; -0.07) <0.001
Gender (female) 6.721 (5.37; 8.06) <0.001
Age 0.119 (0.07; 0.15) <0.001
Health Care Costs Characteristics Dy/dx 95%CI P
Direct cost Pre 1.153 (1.12; 1.17) <0.001
Int 1189.518 (1179.29; 1199.74) <0.001
Post -4.323 (-4.35; -4.29) <0.001
Gender (female) -100.838 (-103.32; -98.34) <0.001
Age 1.303 (1.22; 1.38) <0.001
  1. Obs.: pre pre-intervention, int intervention, post post-intervention