Table 2.

Intraobserver agreement among Russian clinicans on evaluation of chest radiographs. Values are κ (95% confidence intervals)

Radiographic finding	All participants	Tuberculosis specialists	Radiologists	Respiratory specialists
Presence of clinically important abnormality all five categories	0.457 (0.004 to 0.911)	0.456 (−0.036 to 0.949)	0.604 (0.347 to 0.861)	0.292 (−0.141 to 0.725)
Localisation of abnormality*	0.477 (−0.009 to 1.044)	0.473 (−0.081 to 1.026)	0.627 (0.143 to 1.110)	0.277 (−0.280 to 0.834)
Presence of cavity	0.358 (−0.595 to 1.311)	0.443 (−0.202 to 1.089)	0.594 (−0.205 to 1.393)	0.448 (−0.244 to 1.140)
Radiographic findings consistent with tuberculosis	0.493 (−0.03 to 1.016)	0.481 (−0.019 to 0.981)	0.529 (−0.042 to 1.100)	0.483 (−0.078 to 1.044)
Form of tuberculosis†	0.488 (−0.073 to 1.050)	0.448 (−0.074 to 0.970)	0.611 (0.021 to 1.220)	0.449 (−0.144 to 1.042)
Tuberculosis process active	0.490 (−0.098 to 1.078)	0.471 (−0.097 to 1.039)	0.546 (−0.158 to 1.250)	0.470 (0.015 to 0.927)

^*Average of κ values for each radiological zone.

^†According to Russian classification: military, focal, caseous pneumonia, cavernous, cirrhotic, tuberculosis of mediastinal lymph nodes, infiltrative, disseminated, tuberculoma, fibrocavernous, pleuritis.