A measure of goodness-of-fit for the lognormal model applied to occupational exposures

Details

• Personal Author:
  Rappaport SM ; Selvin S ; Waters MA
• Description:
  A new method was presented to help in the evaluation of the goodness of fit to the log normal model that is a simple extension of calculations made routinely by occupational hygienists. This new measure, the ratio metric compares the ratio of two estimators of the mean, the direct estimate of the mean and the maximum likelihood estimate of the mean of a lognormal distribution. The ratio metric gave results which were compared to probability plotting and to two traditional measures of goodness of fit, the Lilliefors test and the W-test. The results of the ratio and W-tests were comparable for a variety of occupational exposure data, but the Lilliefors test was overly conservative and did not detect several cases of gross deviations from lognormality. Results indicated that the ratio metric is an effective alternative to the Lilliefors test and is easier to perform than the W-test for the range of data usually encountered by occupational hygienists. [Description provided by NIOSH]
• Subjects:
  Environmental Exposure Epidemiology Occupational Exposure Occupational Health Safety
• Keywords:
  Exposure-levels Industrial-exposures Industrial-hygiene NIOSH-Author Occupational-exposure Statistical-analysis
• ISSN:
  0002-8894
• Document Type:
  Text
• Genre:
  Journal Article
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  493-502
• Volume:
  52
• Issue:
  11
• NIOSHTIC Number:
  nn:00205004
• Citation:
  Am Ind Hyg Assoc J 1991 Nov; 52(11):493-502
• Federal Fiscal Year:
  1992
• Peer Reviewed:
  True
• Source Full Name:
  American Industrial Hygiene Association Journal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9f4da0e6afce9c981da1b7b14b0b9aa22d0f76e0561f224378da6d3c88b6216ebe217e3d443894b971973f3aef6635822d983595bd246fea0dbd94556a63e5c4
• Download URL:
  https://stacks.cdc.gov/view/cdc/204018/cdc_204018_DS1.pdf
• File Type:
  [PDF - 917.39 KB ]