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Table 4 Pre-, intervention and post-intervention scenario of bariatric surgery using ITSA (point values referring to the first date of data acquisition). 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 Cons Pre Int Post
Coef 95% CI P* Coef 95% CI P* Coef 95% CI P*
Weight 133.7986 0.0053 (-.0029; 0.0134) 0.208 -15.7546 (-20.9373; -10.5312) <0.001 -0.0324 (-0.0441; -0.0205) <0.001
BMI 53.6564 -0.0024 (-0.0025; 0.0029) 0.894 4.4470 (2.0075; 7.4842) 0.001 -0.0158 (-0.0256; -0.0162) <0.001
Blood pressure 132.7641 -0.0024 (-0.0081; 0.0032) 0.402 0.4449 (-3.2024; 4.0685) 0.815 -0.0061 (-0.0140; 0.0018) 0.131
Cholesterol 157.4912 -0.0170 (-0.0331; -0.0008) 0.039 7.1876 (-0.8418; 15.1757) 0.079 0.0186 (-0.0013; 0.0385) 0.066
VLDL 19.3720 0.0043 (0.0014; 0.0072) 0.004 3.1873 (1.3006; 5.0683) 0.001 -0.0124 (-0.0164; -0.0085) <0.001
LDL 93.4065 -0.0093 (-0.0233; 0.0047) 0.194 9.2046 (1.8887; 16.5348) 0.014 -0.0080 (-0.0257; 0.0096) 0.373
HDL 33.0861 0.0212 (0.0156; 0.0268) <0.001 -8.5178 (-11.6697; -5.3983) <0.001 -0.0024 (-0.0098; 0.0049) 0.523
Triglycerides 108.6332 0.0231 (-0.0066; 0.0528) 0.128 0.4112 (-17.1356; 17.8948) 0.966 -0.0775 (-0.1176; -0.0375) <0.001
Insulin 9.9325 0.0150 (0.0108; 0.0193) <0.001 -5.2224 (-7.4075; -3.0374) <0.001 -0.0209 (-0.0263; -0.0156) <0.001
Glucose-linked haemoglobin 126.1915 0.0038 (-0.0156; 0.0231) 0.703 -3.6614 (-14.8040; 7.4856) 0.520 -0.0326 (-0.0580; -0.0071) 0.012
Fasting glucose 101.4913 0.0343 (0.0143; 0.0545) 0.001 -12.6732 (-23.9196; -1.4268) 0.027 -0.0719 (-0.0954; -0.0485) <0.001
Direct costs 180.27 0.8673 (0.0750; 1.6596) 0.032 4,700.29 (3,452.16; 5,948.43) <0.001 -10.2397 (-12.5172; -7.9624) <0.001
  1. Obs.: cons constant, pre pre-intervention, int intervention, post post-intervention. Regression with Newey-West standard errors. *Statistical significance of coefficients