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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: Am J Ind Med. 2010 Feb;53(2):126–134. doi: 10.1002/ajim.20741

TABLE IV.

Availability of EmploymentType and Day Labor Status in Sample and as Applied to All Work-Related Cases

Employment type: n (%)
Day labor status: n (%)
Hispanic SSN n Definite Probable/
tentative
Unknown Definite Probable/
tentative
Unknown Weight of
each groupa
N Y 38 2 (5) 18 (47) 18 (47) 20 (53) 8 (21) 10 (26) 0.829
N N 37 2 (5) 19 (51) 16 (43) 25 (68) 3 (8) 9 (24) 0.034
Y Y 40 6 (15) 21 (53) 13 (33) 23 (58) 5 (13) 12 (30) 0.105
Y N 40 4 (10) 12 (30) 24 (60) 12 (30) 4 (10) 24 (60) 0.032
Total 155 14 (9) 70 (45) 71 (46) 80 (52) 20 (13) 53 (34)
Estimated % of cases identifiableb 6% 47% 46% 53% 19% 28%
a

The proportion of all 1,296 work-related cases constituted by each group, for example, non-Hispanics with SSN make up 82.9% of work-related cases.

b

Estimated proportion of all work-related cases which would be identifiable using chart abstraction. Original percentages are multiplied by their corresponding “weight“; for example, 5% of non-Hispanics with SSN were assigned a “Definite” employment type, which is multiplied by 0.829. The 5% of non-Hispanics lacking SSN were multiplied by a weight of 0.034, and so on. Percentages were then summed.