The symmetric-range accuracy under a one-way random model with balanced or unbalanced data

Details

• Personal Author:
  Krishnamoorthy K ; Mathew T
• Description:
  The symmetric-range accuracy A of a sampler is defined as the fractional range, symmetric about the true concentration, that includes a specified proportion of sampler measurements. In this article, we give an explicit expression for A assuming that the sampler measurements follow a one-way random model so as to capture different components of variability, for example, variabilities among and within different laboratories or variabilities among and within exposed workers. We derive an upper confidence limit for A based on the concept of a 'generalized confidence interval'. A convenient approximation is also provided for computing the upper confidence limit. Both balanced and unbalanced data situations are investigated. Monte Carlo evaluation indicates that the proposed upper confidence limit is satisfactory even for small samples. The statistical procedures are illustrated using an example. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Minerals Mining Occupational Health Safety
• Keywords:
  Author Keywords: Coverage Probability Exposure-levels Generalized Confidence Interval Generalized Pivotal Quantity Laboratories Measurement-equipment Models Non-central Chi-square Distribution Samplers Upper Confidence Limit Workers

  More +
• ISSN:
  0003-4878
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Louisiana ; Maryland ; OSHA Region 3 ; OSHA Region 6
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  57
• Issue:
  7
• NIOSHTIC Number:
  nn:20043979
• Citation:
  Ann Occup Hyg 2013 Aug; 57(7):953-961
• Contact Point Address:
  Kalimuthu Krishnamoorthy, Department of Mathematics, University of Louisiana, Lafayette, LA 70508
• Email:
  krishna@louisiana.edu
• Federal Fiscal Year:
  2013
• NORA Priority Area:
  Manufacturing
• Performing Organization:
  University of Maryland, Baltimore
• Peer Reviewed:
  True
• Start Date:
  20000501
• Source Full Name:
  Annals of Occupational Hygiene
• End Date:
  20150831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0f5a08851f01383dcb2560fba08e75f43742b003e2531995f693063d86ed4fbe6ebf2edb97ebfb23e6cce1bdc57e687345ac9d52eab863a583b187b0a9f9a865
• Download URL:
  https://stacks.cdc.gov/view/cdc/199837/cdc_199837_DS1.pdf
• File Type:
  [PDF - 918.40 KB ]