Cost-Effectiveness of a Short Message Service Intervention to Prevent Type 2 Diabetes from Impaired Glucose Tolerance

Table 4

Results of sensitivity analyses.

Parameters	Base-case	Range for sensitivity analysis	Range for incremental cost (USD)	Range for cost per LYs gained
SMS drop-out rate at year 1	38.89%	0.00%–100.00%	−1669.66 to 0.00	Dominance
SMS drop-out rate at year 2	30.30%	0.00%–100.00%	−1131.28 to −765.21	Dominance
Annual transition probability
From IGT to T2DM, control at year 1–3	10.42%	9.34%–11.57%	−950.73 to −761.82	Dominance
From IGT to T2DM, SMS at year 1	3.53%	0.93%–11.57%	−1324.36 to −76.21	Dominance
From IGT to T2DM, SMS at year 2	6.25%	0.93%–11.57%	−1352.05 to −688.20	Dominance
From IGT to NGT	16.20%	5.00%–25.00%	− 922.28 to −1063.06	Dominance
From NGT to IGT	16.30%	5.00%–25.00%	−1117.45 to −979.19	Dominance
RR of mortality in IGT	1.5	1.1–2.0	−1015.49 to −1026.04	Dominance
RR of mortality in T2DM	2.3	1.6–3.2	−1087.30 to −953.95	Dominance
Discount rate	3.00%	0.00%–5.00%	−1450.41 to −836.95	Dominance

Note: NGT = normal glucose tolerance; IGT = impaired glucose tolerance; T2DM = type 2 diabetes mellitus; RR = relative risk.