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Poster Presentation
Respiratory
0277 Sensitivity and specificity of occupational health doctors reading of early stage pneumoconiosis radiographs
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  1. Phanumas Krisorn1,
  2. Naesinee Chaiear1,
  3. Ponglada Subhannachart2,
  4. Narongpon Dumavibhat3,
  5. Sutarat Tungsagunwattana2,
  6. Krittin Silanun1
  1. 1Division of Occupational Medicine, Department of Community Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
  2. 2Central Chest Institute of Thailand, Department of Medical Services, Ministry of Public Health, Nonthaburi, Thailand
  3. 3Department of Preventive and Social Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
  4. 4Department of Community Medicine and Family Medicine, Faculty of Medicine, Thammasat University, Pathum Thani, Thailand

Abstract

Objective This study was aimed to find out the sensitivity and specificity in reading early stage pneumoconiosis radiographs by Occupational Health Doctors (OHDs).

Materials and method A screening test was applied. Thirty three of OHD consented to join the study. The test radiographs consisted of 67 normal and early stage pneumoconiosis films. Before testing, all participants were introduced to basic ILO reading for 65 min by 3 B-reader ILO pneumoconiosis experts. The cut-point for disease was set at profusion 0/1 and 1/0. Mean sensitivity and specificity for small opacities detection was analysed.

Results The median sensitivity of ILO profusion 0/1 or above was 88% (IQR 10.3), the median sensitivity of 1/0 cut-point film was slightly increase at 90% (IQR 10.3), while the mean specificity for ILO profusion 0/1 or above was 43.3% (SD 21.1). When stepping the cut-point to profusion 1/0, the mean specificity increased to 47.0% (SD 20.9).

Conclusion This study showed that OHDs were able to interpret chest radiographs of workers who have had early stage pneumconiotic radiographs. Therefore, chest X-ray reading skill development for OHDs has value for the surveillance system in this country.

  • Keyword: Silicosis
  • ILO classification
  • chest radiograph
  • sensitivity
  • Occupational Health Doctors

https://doi.org/10.1136/oemed-2017-104636.227

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