Prevalence constant | 0.25 | 0.2 | 0.4 |
|
Cost of urea breath test | £20.00 | £15.00 | £21.05 |
|
Cost of serology | £8.50 | £7.50 | £9.38 |
|
Cost of faecal antigen test | £14.00 | £12.00 | £19.00 |
|
Cost of eradication treatment | £30.00 | £9.00 | £38.00 |
|
Cost of missed diagnosis — based on cost of gastroscopy (£196), cost of 2 months of high dose PPI (£44), and one extra GP visit (£20) | £260 | £0 | £500 |
|
Sensitivity of urea breath test | 0.97 | 0.80 | 0.99 |
|
Sensitivity of serology | 0.91 | 0.80 | 0.95 |
|
Sensitivity of faecal antigen test | 0.96 | 0.80 | 0.97 |
|
Specificity of urea breath test | 0.96 | 0.80 | 0.99 |
|
Specificity of serology | 0.90 | 0.70 | 0.90 |
|
Specificity of faecal antigen test | 0.97 | 0.80 | 0.97 |