Medialization thyroplasty versus injection laryngoplasty: a cost minimization analysis

Table 5 Costs in 2014 Canadian Dollars for Sensitivity Analyses

Costs	Base Case	Standard Deviation	One-Way Sensitivity Analysis		Parameters for Gamma distributions for PSA		References
Costs	Base Case	Standard Deviation	Low Value	High Value	α ^a	β ^b	References
Direct costs:
Costs components for MT ^c
Surgeon	632.85						[11]
Nursing and OR aides	325.38	104.30	118.49	597.61	9.7315	0.0299	LHSC Data^f
Supplies	316.42	175.44	167.70	525.11	3.2529	0.0103	LHSC Data^f
Anesthesia	165.46	32.72	118.28	266.14	25.5637	0.1545	[11]
Inpatient stay if admitted after MT ^d	1,595.78	635.36			6.3083	0.0040	LHSC Data^f
Costs components for IL
Equipment (CaHa)	305.71		285.97	325.45			LHSC Data^f
Physician	256.11						[11]
Nursing staff	5.42	10% of the mean mean			100	18.4577	[12]
Indirect costs ^e:
Productivity loss for MT if all patients cannot work during waiting time
Age 15–24	29666.40						[14]
Age 25–54	32913.36						[14]
Age 55–65	17677.44						[14]
Age 66+	0						[14]
Productivity loss for IL if all patients cannot work during the waiting time
Age 15–24	0						[14]
Age 25–54	2796.56						[14]
Age 55–65	0						[14]
Age 66+	0						[14]

^a The parameter α for a gamma distribution is calculated by mean ²/variance
^b The parameter β for a gamma distribution is calculated by variance/mean
^c Revision MT was assumed to cost the same as initial MT
^d We assumed inpatient stay if admitted after a MT is the same for patients with or without post-surgery symptoms
^e The base case values of indirect costs are used in the scenario analysis only
^f Based on London Health Sciences Centre (LHSC) retrospectively collected patient cohort

ISSN: 1916-0216