Table 1.

Model base-case parameters.

Parameter	Base case	Variance	Reference
PATIENT COHORT
Age, years	73	2.3	(20)
Gender, % female	29.8	0.18	(20)
Obese, %	35	0.48	(18)
Morbid obesity, %	6	0.24	(18)
Diabetes, %	45.2	0.19	(20)
CLINICAL SETTINGS
Time on MV, days	0.5	0.0001	(19)
ICU time, days	1	0.0001	(19)
Hospital time, days	8	1.79	(20)
Prolonged MV patients	10.6	0.0001	(18)
ECG monitoring, days	8	1.79	(20)
Home discharge	74.5	0.17	(20)
In-hospital mortality, %	2.7 (after 13 days)	0.067	(20)
DSWI, % of SSIs	40.75	2.6	(4)
SSI additional length of stay, days	13.3	20.8	(21)
DSWI additional length of stay, days	24	5	(22)
False alarms, N per 100 patient days	97.9	1.43	(16)
Leads-off alarms, N per 100 patient days	40.9	4.92	(16)
RELATIVE RISK OF EVENTS
spECG false alarms, RR	0.81	0.13	(16)
spECG leads-off alarms, RR	0.71	0.15	(16)
DSWI RR, BMI morbidly obese	6.45	0.40	(18)
Hospital mortality RR, morbidly obese	1.64	0.18	(18)
Diabetes RR, DSWI	1.71	0.20	(19)
COSTS
rECG cost per patient use	9.08	1.66	†
spECG purchase cost	15	2	‡
CABG	10,244	2,664	(10)
Mechanical ventilation	756	210–906	(23)
ICU per day	2,536	2,197–3,066	(23)
Nurse time, $ per hour	58	4.6	(24)
Inpatient SSI*	−158	210	(5)
Outpatient care for SSI	2,583	838	(25)
Readmission for DSWI	23,586	6,815	(9)
Future care costs	4673.1	524	(10)
Decrement, future care costs	92.29	215	(10)
QUALITY OF LIFE
Baseline	0.85	0.158	(10)
CABG	0.741	0.191	(10)
Mechanical ventilation	−0.39	−0.59–0.09	(26)
ICU stay	0.402	0.36–0.44	(27)
General ward stay	0.52	0.45–0.59	(28)
SSI	0.198	0.04–0.8	(11, 29)

Costs are in 2016 USD, with conversion from the published figure using the CPI for medical care (Series Id: CUUR0000SAM).

^*Surgical site infection is generally found to increase hospital length of stay and hospital costs, but reduce the mean cost per day in hospital.

^†Calculated value ‡Data on file with Cardinal Health.