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Factory expert panel vs. industrial hygienist measurement based
exposure assessment of past exposure to respirable crystalline
silica dust in a Swedish porcelain plant


  Nils Plato
  Associate professor
  Institute of Environmental Medicine
  Karolinska Institutet
  Stockholm, Sweden
Name Surname   19 June 2012
Methods



   Expert panel: (assessment in 1998)
   Semi-quantativ assessment of 140 job-titles 1971-1995 within a porcelain plant in low,
    median and high (fractions of OEL) regarding respirable crystalline silica dust (RCS)


   Industrial hygienists: (assessment in 2011)
   Classification/assessment of the same job-titles during 1971-1995 based at 463 full-shift
    personal measurements within the plant performed during 1971-1995 regarding RCS. The
    data were transfered into three categories, low, median and higt to be compared to the
    experts classification

   Analysis for PA, RP, RC and RV
Results
                       1998
                 low   median        high   tot
                                                                   ROC
                                                                            1
       low       35    59            9      103




                                                            kum andel y
                                                                          0,8
                                                                          0,6
                                                                          0,4
       median    1     13            19     33                            0,2
2011                                                                        0
       high      0     0             4      4
                                                                                0 0, 0, 0, 0, 1
                                                                                  2 4 6 8

       tot       36    72            32     140                                     kum andel x




                                Results                    SE                   Conf. Interv.
                                PA                  37%

                                RP                -0,518           0,04                 -0,5961       -0,4394
                                RC                  0,04           0,09                    -0,14        0,22

                                RV                0,0164   0,0112                                 0   0,0383

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Nils Plato - Factory Expert Panel vs. Industrial Hygienist Measurement Based Exposure Assessment of Past Exposure to Respirable Crystalline Silica Dust in a Swedish Porcelain Plant

  • 1. Factory expert panel vs. industrial hygienist measurement based exposure assessment of past exposure to respirable crystalline silica dust in a Swedish porcelain plant Nils Plato Associate professor Institute of Environmental Medicine Karolinska Institutet Stockholm, Sweden
  • 2. Name Surname 19 June 2012
  • 3. Methods  Expert panel: (assessment in 1998)  Semi-quantativ assessment of 140 job-titles 1971-1995 within a porcelain plant in low, median and high (fractions of OEL) regarding respirable crystalline silica dust (RCS)  Industrial hygienists: (assessment in 2011)  Classification/assessment of the same job-titles during 1971-1995 based at 463 full-shift personal measurements within the plant performed during 1971-1995 regarding RCS. The data were transfered into three categories, low, median and higt to be compared to the experts classification  Analysis for PA, RP, RC and RV
  • 4. Results 1998 low median high tot ROC 1 low 35 59 9 103 kum andel y 0,8 0,6 0,4 median 1 13 19 33 0,2 2011 0 high 0 0 4 4 0 0, 0, 0, 0, 1 2 4 6 8 tot 36 72 32 140 kum andel x Results SE Conf. Interv. PA 37% RP -0,518 0,04 -0,5961 -0,4394 RC 0,04 0,09 -0,14 0,22 RV 0,0164 0,0112 0 0,0383