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A Validation Method to Determine Missing Years of Birth in a Cohort Study of Shipyard Workers Using Social Security Number
  • Published Date:
    Jun 2016
  • Source:
    J Occup Environ Med. 58(6):631-635.


Public Access Version Available on: June 01, 2017 information icon
Please check back on the date listed above.
Details:
  • Pubmed ID:
    27281641
  • Pubmed Central ID:
    PMC4958378
  • Funding:
    F31 CA200344/CA/NCI NIH HHS/United States
    T42 OH008412/OH/NIOSH CDC HHS/United States
  • Document Type:
  • Collection(s):
  • Description:
    The objective of the study is to evaluate the generalizability and feasibility of a prediction method developed by Block et al (1983) to estimate missing age of workers by using their Social Security Numbers (SSNs).|Our study used a retrospective occupational cohort of about 15,000 workers from the Long Beach Naval Shipyard (1978 to 1985).|Our results showed an 89.2% agreement (Pā€Š<ā€Š0.0001) between the predicted and observed years of birth using Block's method. The correlation increased to 93.1% (Pā€Š<ā€Š0.0001) after our modifications by removing workers with SSNs issued in U.S. territories. The method performed better in shipyard workers who obtained their SSNs after 1950.|Although the method is useful in imputing missing age, the accuracy is dependent on the year, age, and location of SSN issuance.

  • Supporting Files:
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