Table 3

Sensitivity analysis by time horizon

Sensitivity analysis		ICER ·QALY⁻¹
Parameter	Range tested	5 yrs	Lifespan
Age yrs
Males	30–60	7896–7789	5035–4853
Females	30–60	7879–7473	4734–4180
RR stroke (untreated)	1.353–1.706	7861–7823	4938–4634
Utility gain
Present study	0.013–0.126	42235–4573	17544–3021
Ref. 7	0.112–0.367	5142–1576	3366–1092
Ref. 36	0.09–0.16	6388–3606	4103–2418
Benefit of nCPAP on blood pressure %	100–25	7861–7916	4938–5381
Drop-out rate	0.1–0.5	7861–9381	4938–5286
Cost of nCPAP	358–622	7861–11444	4938–8114
Discount rate	0.01–0.05	7723–8001	4603–4938
Separate discount	Cost 0.06; effectiveness 0.015	3653	3008