Table 3 Health outcomes and direct health care costs of patients during 6-month pre-and post-bariatric surgery. Mean values of each period. Sao Paulo (Brazil), 2018
Health outcomes | Pre-surgery μ (±SD) | Post-surgery μ (±SD) | P | Cost per unit change (US$) |
Weight (kg) | 125.53 (±18.58) | 103.23 (±24.46) | <0.001 | 61.68 |
BMI (kg/m [2]) | 47.36 (±4.22) | 39.01 (±7.26) | <0.001 | 164.71 |
Blood pressure (mmHg) | 132 (±15.21) | 126.51 (±17.36) | 0.0025 | 250.52 |
Cholesterol (mg/dL) | 165.11 (±39.9) | 167.78 (±38.55) | 0.8341 | 515.12 |
VLDL (mg/dL) | 21.51 (±8.33) | 22.91 (±8.93) | <0.001 | 982.41 |
LDL (mg/dL) | 94.06 (±34.66) | 93.2 (±34.58) | 0.0147 | 1,599.27 |
HDL (mg/dL) | 45.63 (±14.38) | 51.88 (±13.23) | <0.001 | 220.06 |
Triglycerides (mg/dL) | 130.67 (±64.21) | 117.27 (±56.95) | <0.001 | 102.64 |
Insulin (IU/mL) | 17.19 (±22.55) | 12.69 (±7.47) | <0.001 | 305.64 |
Glucose-linked hemoglobin (%) | 127.57 (±43.88) | 113.61 (±36.47) | 0.001 | 98.52 |
Fasting glucose (mg/dL) | 113.22 (±45.77) | 99.11 (±39.83) | <0.001 | 97.47 |
Health care costs | Pre-surgery μ (±SD) | Post-surgery μ (±SD) | P | Cost per unit change (US$) |
Consultations | 17.64 (±13.9) | 18.06 (±15.32) | <0.001 | 3,274.69 |
Inpatient days* | 11,913.26 (±12,682.01) | 9,151.04 (±9,695.16) | <0.001 | 0.50 |
Laboratory exams | 108.72 (±112.94) | 177.68 (±217.78) | <0.001 | 19.94 |
Image exams | 888.99 (±901.22) | 881.46 (±854.78) | 0.0161 | 182.65 |
Medication | 683.9 (±854.73) | 508.45 (±696.99) | <0.001 | 7.84 |
Total direct costs | 996.61 (±4,515.39) | 2,371.98 (±6,172.79) | <0.001 | - |