[Do we agree on the technical quality of our chest X-rays? A radiologist, an expert in X-ray diagnosis, and a family doctor try to find out].
OBJECTIVE
To appraise the degree of concordance in the interpretation of the technical quality of chest x-rays at a health centre between an expert in x-ray diagnosis, a family doctor, and a radiologist.


METHODS
Transversal study. Setting. Primary care. Cartuja Health Centre, Granada, Spain.


METHODS
Patients at the Cartuja Health Centre who had a simple chest x-ray in 2002. 150 studies were chosen by simple randomised sampling. Two were rejected because they dealt with a repeat examination of the same patient and seven because they did not reach minimum quality. The final sample was 141 x-rays.


METHODS
The observers filled in independently, for each examination, an 11-item protocol on the technical quality of the images. The kappa index between pairs of observers was calculated for each item, as was the overall kappa index.


RESULTS
96% of the examinations were conducted with large x-ray plates (3543). There was only acceptable or good concordance between the 3 observers in 2 questions (kappa, 0.559-0.858). In 5 questions concordance was homogeneously low (kappa, 0.034-0.375). In some questions there was a strong discrepancy between the appraisal of the expert and that of the 2 other observers.


CONCLUSIONS
General concordance can be considered low, although it is somewhat greater between the radiologist and the family doctor than between either of these and the expert. This poses the need to improve professional training in evaluation of the technical quality of images. In addition, there was unnecessary expense in large-size x-ray plates.
Garófano-Jerez
J M
JM
Servicio de Radiodiagnóstico, Hospital Universitario San Cecilio, Granada, Spain.
Quesada-Jiménez
F
F
Cabrerizo-Castro
J
J
Morales-Navarra
G
G
García-Ruiz
T
T
Lardelli-Claret
P
P
D003430:Cross-Sectional Studies; D005194:Family Practice; D006801:Humans; D015588:Observer Variation; D013902:Radiography, Thoracic / Q000592:standards* / Q000706:statistics & numerical data; D011871:Radiology