Table 1.

Overview of CPTO studies

Study	Life years used	MET health state	Utility correction	TTO long …TTO short	Sample
Sackett and Torrance [8]	3 months 8 years Life expectancy	Mixed	No	<	General population Patients
Pliskin et al. [12]	5 years 15 years	No	Yes	=	Pilot sample
Miyamoto and Eraker [18]	1, 2, 15, 16, 20, 24	No	No	<(p values not reported)	Patients
Hall et al. [19]	10% of LE 50% of LE Life expectancy	Mixed	No	=	Women 40–70 50% patients
Cook et al. [20]	1 year 12 years	No	No	=	Patients
Stiggelbout et al. [7]	3, 10, 15 years 3, 5, 10 years 5, 20, LE	No	No	<	Patients
Stalmeier et al. [25]	5, 10, 25, 50	Yes	Yes	=Except for t = 5	Students
Stalmeier et al. [21]	5, 10, 25, 50	Yes	No	≥	Students
Bleichrodt and Johannesson [4]	10 and 30 years	No	No	=	Students
Unic et al. [22]	5, 10 and higher	No	No	>	Healthy women
Kirsch and McGuire [23]	2 and 10 years	Mixed	No	≤	General population
Martin et al. [26]	5, 10, 15 years	No	Yes	<	Older cardiovascular disease patients (mean age 61)
Stalmeier et al. [24]	10 and 20 years	Yes	No	<(p values not reported)	Students Patients
Bleichrodt et al. [9]	13, 19, 24, 31, 38 years	No	No	≥	Students
Dolan and Stalmeier [5]	10 and 20 years	Yes	No	<	Students
Van der Pol and Roux [6]	20 and 50 years	No	Yes	=	Students