Huashi ZhouYukinori KusakaTaro TamuraNarufumi SuganumaPonglada SubhannachartSomkiat SiriruttanaprukNarongpon DumavibhatXing ZhangP. K. SishodiyaKhuong van DuyKurt G. HeringJohn E. ParkerEduardo AlgrantiIgor FedotovHisao ShidaMasanori AkiraUniversity of FukuiKochi UniversityChest Disease InstituteThailand Ministry of Public HealthMahidol UniversityZhejiang Academy of Medical SciencesNational Institute of Miners' HealthHa Noi Medical UniversityMiner's HospitalWest Virginia University Robert C. Byrd Health Sciences CenterDivisao de MedicinaInternational Labour OrganizationCommittee of Compensation of Asbestos RelatedNational Hospital Organization, Japan2018-06-112018-06-112012-04-19Industrial Health. Vol.50, No.2 (2012), 142-146001983662-s2.0-84859742984https://repository.li.mahidol.ac.th/handle/123456789/1419929 physicians (A1-Group) and 24 physicians (A 2-Group) attending the 1st and 2nd "A sian Intensive Reader of Pneumoconiosis" (AIR Pneumo) training course, respectively, and 22 physicians (B-Group) attending the Brazilian training course took the examination of reading the 60-film set. The objective of the study was firstly to investigate the factor structure of physicians' proficiency of reading pneumoconiosis chest X-ray, and secondly to examine differences in factor scores between groups. Reading results in terms of the 8-index of all examinees (Examinee Group) were subjected to the exploratory factor analysis. A 4-factor was analyzed to structure the 8-index: the specificity for pneumoconiosis, specificity for large opacities, specificity for pleural plaque and shape differentiation for small opacities loaded on the Factor 1; the sensitivity for pneumoconiosis and sensitivity for large opacities loaded on the Factor 2; the sensitivity for pleural plaque loaded on the Factor 3; the profusion increment consistency loaded on the Factor 4. 4-Factor scores were compared between each other of the three groups. The Factor 2 scores in A1 and A2 groups were significantly higher than in B-Group. Four factors could reflect four aspects of reading proficiency of pneumoconiosis X-ray, and it was suggested that 4-factor scores could also assess the attained skills appropriately. © 2012 National Institute of Occupational Safety and Health.Mahidol UniversityEnvironmental ScienceMedicineArticleSCOPUS10.2486/indhealth.MS1316