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

Table 2

Clinical parameter value in base-case scenario and range used in sensitivity analysis.

Parameter	Base-case	Sensitivity analysis		Reference
		Minimum	Maximum
SMS intervention
Drop-out rate at year 1	38.89%	0%	100%	[11]
Drop-out rate at year 2	30.30%	0%	100%	[11]
Relative risk of T2DM at year 1 from IGT	0.34	0.10	1.00	[11]
Relative risk of T2DM at year 2 from IGT	0.60	0.10	1.00	[11]
Annual transition probability from IGT to NGT
At all years	16.20%	5%	25%	[22]
Annual transition probability from NGT to IGT
At all years	16.30%	5%	25%	[22]
Incidence rate (cases per 100 person-years) of T2DM from IGT
Control at years 1–3	11.0	9.8	12.3	[27]
Control at year 4+	5.6	4.8	6.5	[28]
Relative risk of mortality
IGT	1.5	1.1	2	[23]
T2DM	2.3	1.6	3.2	[23]
Utility
NGT	0.76	NA		[23]
IGT	0.76	NA		[23]
T2DM	0.72	NA		[23]
Discount rate	3%	0%	5%	[25]

Note: NGT = normal glucose tolerance; IGT = impaired glucose tolerance; T2DM = type 2 diabetes mellitus; NA = not applicable.