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Table 4 Results of the two diagnostic pathways including costs* and cost-effectiveness in US$. (N = 998)

From: The role and performance of chest X-ray for the diagnosis of tuberculosis: A cost-effectiveness analysis in Nairobi, Kenya

 

ZN followed by CXR (n = 998).

CXR followed by ZN (n = 998)

Number of culture positive suspects

559

559

Number of patient put on treatment

666

551

Number Culture pos. patient put on treatment

514

496

C+/ZN+ patients put on treatment

335

308

C+/ZN- patient put on treatment

179

188

Number Culture neg. patients put on treatment (Over diagnosis)

152

56

Number Culture pos. patients not put on treatment (Under diagnosis)

45

63

Laboratory service

  

Labour costs

$973

$973

Investment costs

$135

$135

Running costs

$1,706

$1,151

Total laboratory costs

$2,814

$2,259

X-ray service

  

Labour costs

154

$154

Investment costs

237

$237

Running costs

1,278

$1,946

Total CXR service costs

1,669

$2,337

Total diagnostic costs

$4,483

$4,596

Cost per correctly diagnosed patient

$8.72

$9.27

Total treatment costs **

$76,565

$63,422

Diagnostic costs + treatment costs

$81,048

$68,018

Cost per correct diagnosed patient including costs of treatment.

$158

$137

  1. * costs only include health service costs
  2. ** costs for health service to treat a patient: $115