Table 5

Sensitivity analysis

Adjusted unit costs
Workload (number of consultations) required for threshold to be reached

Base case
100
Video-otoscope

     cost = $12,000
85
     cost = $18,000
115
     life = 3 years
144
     life = 8 years
75
     discount rate = 3%
96
     discount rate = 10%
111
Document camera

     cost = $4000
95
     cost = $6000
105
     life = 3 years
115
     life = 8 years
95
     discount rate = 3%
99
     discount rate = 10%
104
Proportion seeking reimbursement for travel

     90%
150
     80%
303
Travel cost

     $115
69
     $125
60
Accommodation allowance

     $40
70
     $50
54
     ISDN line charges

     $1000
81
     $3000
134
Technician's travel costs

     $0
60
     $1350
75
     $4000
147

Xu et al. BMC Health Services Research 2008 8:30   doi:10.1186/1472-6963-8-30