This presentation will be available to view as a discussion poster at the 7th International Conference on the Science of Exposure Assessment - X2012. It will be presented on 04 July 2012 from 09.30 – 11.45 am followed by a chaired discussion of all posters in this session on Chemicals in the Workplace. Appointments with the authors are available to book at https://x2012discussionposters.acuityscheduling.com

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