Table 3.
Cost and Benefit Sensitivity Analysis Results for the Different Patient Groups, from the Tunisian Healthcare Perspective
| Outcomes at Different Time Horizons | Group 1 | Group 2 | ||||
|---|---|---|---|---|---|---|
| Surgery | Conventional Treatment | Difference | Surgery | Conventional Treatment | Difference | |
| At 5 years | ||||||
| Total costs per patient (TND) | 13,948 | 8470 | 5477 | 14,542 | 10,345 | 4197 |
| QALYs per patient | 3.09 | 1.87 | 1.22 | 2.36 | 1.76 | 0.60 |
| Survival years per patient | 4,51 | 4,51 | 0.00 | 4,48 | 4,48 | 0.00 |
| NMB at 31,379 TND/QALY (TND) | 82,895 | 50,042 | 32,852 | 59,559 | 44,999 | 14,560 |
| ICER | 4484 TND / QALY | 7021TND / QALY | ||||
| At 10 years | ||||||
| Total costs per patient (TND) | 20,501 | 14,916 | 5585 | 21,588 | 18,065 | 3523 |
| QALYs per patient | 5.36 | 3.22 | 2.14 | 4.17 | 3.07 | 1.10 |
| Survival years per patient | 7.97 | 7.97 | 0.00 | 7.85 | 7.83 | 0.02 |
| NMB at 31,379 TND/QALY (TND) | 147,774 | 86,178 | 61,596 | 109,346 | 78,273 | 31,074 |
| ICER | 2609 TND / QALY | 3195 TND / QALY | ||||
| At 20 years | ||||||
| Total costs per patient (TND) | 30,765 | 24,991 | 5774 | 33,010 | 29,374 | 3636 |
| QALYs per patient | 8.00 | 5.00 | 3.00 | 6.26 | 4.64 | 1.62 |
| Survival years per patient | 12.54 | 12.48 | 0.05 | 12.08 | 11.97 | 0.11 |
| NMB at 31,379 TND/QALY (TND) | 220,160 | 131,606 | 88,553 | 163,414 | 116,121 | 47,293 |
| ICER | 1921 TND / QALY | 2240 TND / QALY | ||||
Notes: Group 1: BMI ≥40, or BMI ≥35 with obesity-related comorbidities; Group 2: BMI ≥35 with T2DM.
Abbreviations: ICER, Incremental cost-effectiveness ratio; NMB, Net monetary benefit; QALY, Quality-adjusted life year; TND, Tunisian Dinar.