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  <docDscr>
    <citation>
      <titlStmt>
        <titl>
Application of the Bayesian spline method to analyze the real-time measurements of ultrafine particle concentration in Parisian subway</titl>
<parTitl>
Application de la méthode bayésienne avec splines pour analyser les mesures en temps réel de la concentration de particules ultrafines dans le métro parisien</parTitl>
        <IDNo agency="DOI System">
10.16909-DATASET-26</IDNo>
      </titlStmt>
      <rspStmt>
        <othId role="Metadata and DDI creator" affiliation="Center for Primary Care and Public Health (Unisanté), University of Lausanne, Switzerland">
            Racine, Céline
        </othId>
      </rspStmt>
      <prodStmt>
        <producer abbr="Unisanté" role="Data publisher">
Center for Primary Care and Public Health (Unisanté), University of Lausanne, Switzerland</producer>
        <software version="7.5.7">
          Notepad++
        </software>
      </prodStmt>
      <verStmt>
        <version>
          Version 1.0 (December 2020)
        </version>
      </verStmt>
    </citation>
  </docDscr>
  <stdyDscr>
    <citation>
      <titlStmt>
        <titl>
Application of the Bayesian spline method to analyze the real-time measurements of ultrafine particle concentration in Parisian subway</titl>
<parTitl>
Application de la méthode bayésienne avec splines pour analyser les mesures en temps réel de la concentration de particules ultrafines dans le métro parisien</parTitl>

        <IDNo agency="DOI System">
10.16909-DATASET-26</IDNo>
      </titlStmt>
      <rspStmt>
        <AuthEnty affiliation="Center for Primary Care and Public Health (Unisanté), Department of occupational and environmental health (DSTE)">
         Guseva Canu, Irina
        </AuthEnty>

      </rspStmt>
      <prodStmt>
<producer affiliation="Center for Primary Care and Public Health (Unisanté), Department of occupational and environmental health (DSTE)" role="Investigator, first author">
Pétremand, Remy
        </producer>
		<producer affiliation="Center for Primary Care and Public Health (Unisanté), Department of occupational and environmental health (DSTE)" role="Investigator, co-author">
Pascal Wild
        </producer>
				<producer affiliation="Center for Primary Care and Public Health (Unisanté), Department of occupational and environmental health (DSTE)" role="Investigator, co-author">
Camille Crézé
        </producer>
		<producer affiliation="Center for Primary Care and Public Health (Unisanté), Department of occupational and environmental health (DSTE)" role="Investigator, co-author">
Guillaume Suarez
        </producer>
		<producer affiliation="Régie autonome des transports parisiens (RATP)" role="Investigator, co-author">
Sophie Besançon
        </producer>
		<producer affiliation="Régie autonome des transports parisiens (RATP)" role="Investigator, co-author">
Valérie Jouannique
        </producer>
		<producer affiliation="Régie autonome des transports parisiens (RATP)" role="Investigator, co-author">
Amélie Debatisse
        </producer>
        <copyright>
          (c) 2021, Center for Primary Care and Public Health (Unisanté), University of Lausanne, Switzerland and Régie autonome des transports parisiens (RATP)
        </copyright>

        <fundAg abbr="Unisanté">
          Center for Primary Care and Public Health
        </fundAg>
		<fundAg abbr="RATP">
          Régie autonome des transports parisiens
        </fundAg>

      </prodStmt>
      <verStmt>
        <version date="2021-04-19">
          Version 1.0
        </version>
      </verStmt>
    </citation>
    <stdyInfo>
      <subject>
        <keyword>
Subway</keyword>
<keyword>
Underground workplace</keyword>
<keyword>
Exposure</keyword>
<keyword>
Ultrafine particles</keyword>
<keyword>
Exposure assessment</keyword>
   <keyword>
Bayesian Inference</keyword>    
      </subject>
      <abstract>
        <![CDATA[Background
Air pollution in subway environment is a growing concern as it often exceeds WHO recommendations for indoor air quality. Ultrafine particles (UFP), for which there is still no regulation, neither standardized exposure monitoring method, are the strongest contributor to this pollution when the number concentration is used as exposure metric.
Objectives 
We aimed to assess the real-time UFP number concentration in the personal breath zone (PBZ) of three types of underground Parisian subway professionals and analyze it using a novel Bayesian spline approach. Consecutively, we investigate the effect of jobs, week days, subway stations, worker location and some events on UFP number concentration. 
Methods 
The data collection procedure, originating from a longitudinal study, lasted for a total duration of 6 weeks from 7 October 2019 to 15 November 2019, two weeks per type of subway professionals. Time-series were built from the real-time particle number concentration (PNC) measured in the PBZ of professionals during their work-shifts. Complementarily, contextual information expressed as Station, Environment and Event variables were extracted from activity logbooks completed for every work-shift by study technicians. Subsequently, the Bayesian spline approach was applied to model PNC within a Bayesian framework as a function of the latter contextual information. 
Results
Overall, the Bayesian spline approach seams well suited to model real-time personal PNC data. The model enabled estimating the differences in UFP exposure between subway professionals, between stations, and different locations. Our results suggest that the PNC is higher the closer to the subway tracks with the highest PNC at the subway station platforms. Studied events had a lesser influence, as well as the day of the week
Conclusion
The application of the Bayesian spline method to investigate the individual exposure to UFP in the underground subway setting was shown feasible. This method is informative for better documenting the magnitude and variability of UFP exposure and for understanding its determinants in view of its further regulation and control. 
]]>
      </abstract>
      <sumDscr>
        <collDate date="2019-09-01" event="start"/>
        <collDate date="2021-03-30" event="end"/>
        <nation abbr="FR">
          France
        </nation>
        <geogCover>
Paris, France</geogCover>
        <anlyUnit>
Particle Number Concentration (#/cm3)</anlyUnit>
<dataKind><![CDATA[One script of statistical analysis using R (Suppl_file_1_BUGS_model.R)
Three csv files:
The first one (Suppl_file_2_Summary_airborne_sample.csv) presents the summary statistics of particle number concentration per time-series, sampling type and job. 
The second file (Suppl_file_3_Summary_PNC_for_Day_Station_Environment_Event.csv) regroups the descriptive summary of Particulate Number Concentration (PNC) for the following variables: days, stations, environments and events.
Finally, the third file (Suppl_file_4_Bayesian_Spline_coefficient.csv) presents the Summary statistics for coefficients δ and σ(Day), Summary statistics for coefficients μδ(Job) and σδ(job), Summary statistics for coefficients α(Station) and Summary statistics for coefficients β(Environments). 
]]>
</dataKind>
      </sumDscr>
    </stdyInfo>
	    <method>
      <dataColl>
        <sampProc>
        </sampProc>
		<collMode>
</collMode>
        <resInstru>
        </resInstru>
		<cleanOps>
		</cleanOps>
		</dataColl>
		</method>
    <dataAccs>
      <useStmt>
        <confDec>

        </confDec>
		<contact affiliation="Center for Primary Care and Public Health (Unisanté), University of Lausanne, Switzerland" email="dfri.data@unisante.ch">
          Racine, Céline (Repository manager)
        </contact>
        <citReq>
         Rémy Pétremand, Pascal Wild, Guillaume Suarez, Sophie Besançon, Valérie Jouannique, Amélie Debatisse, Guseva Canu, Irina. Application of the Bayesian spline method to analyze the real-time measurements of ultrafine particle concentration in Parisian subway. Supplementary material files. Center for Primary Care and Public Health (Unisanté), University of Lausanne, Switzerland. Version 1.0 of the licensed dataset (April 2021), provided by the Unisanté Research Data Repository. DOI:10.16909/DATASET/26
        </citReq>
    
        <disclaimer>
          The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.
        </disclaimer>
      </useStmt>
    </dataAccs>
  </stdyDscr>
  <dataDscr/>
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