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Table 1 Values and source of inputs used in simulation modelling and cost-effectiveness analysis

From: Risk-based inspection as a cost-effective strategy to reduce human exposure to cysticerci of Taenia saginata in low-prevalence settings

Input parameter Value Source
   • Simulation modelling
Number of slaughtered animals 2,500,000 [6]
True prevalence of Taenia saginata cysticercus (P+) 0.00086 Calculated from apparent prevalence reported in [6], assumed sensitivity of 15% and specificity of 100%
Sensitivity of current inspection Min = 0.04, most likely = 0.15, max = 0.25 [18]
Sensitivity of alternative inspection Min = 0.14, most likely = 0.25, max = 0.35 [18, 20, 22]
Probability that an infected animal has high-risk farm in movement history P(HRF|P+) 0.45 Data collected
Probability that a non- infected animal has high-risk farm in movement history P(HRF|P-) 0.15 Data collected
Probability that an infected animal is a high-risk animal P(HRA|P+) 0.92 Data collected
Probability that a non-infected animal is from high-risk group P(HRA|P-) 0.78 Data collected
   • Cost-effectiveness analysis
Time taken for current full carcass inspection 3 min Expert opinion
Time taken for alternative inspection 3.25 min Expert opinion
Cost of meat inspectors time (per min) £0.493 Expert opinion
Cold storing localised infected carcasses £7 Expert opinion
Reduction in value of localised infected carcasses due to being subjected to freezing £600 Expert opinion
Discarding of heart (i.e. heart value lost) £1 Expert opinion
Discarding of external cheek muscle £2 Expert opinion
Discarding of internal cheek muscle £1 Expert opinion
Discarding of oesophagus £1 Expert opinion
Discarding of diaphragm £0.5 Expert opinion
Time spent removing heart 0.08 min Expert opinion
Time spent removing external cheek muscle 0.33 min Expert opinion
Time spent removing internal cheek muscle 0.33 min Expert opinion
Time spent removing oesophagus 0.33 min Expert opinion
Time spent removing diaphragm 0.25 min Expert opinion
Decrease in value of heart due to cuts for current inspection £1 Expert opinion
Decrease in value of external cheek muscles due to cuts for current inspection £0.51 Expert opinion
Decrease in value of internal cheek muscles due to cuts for current inspection £0.33 Expert opinion
Decrease in value of heart due to increased cuts for enhanced inspection £1 Expert opinion
Carcass value (lost due to generalised infection) £1200 Expert opinion
Disposal of carcass (discarded due to generalised infection) £100 Expert opinion