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Table 1 Agreement between NBDPS Interview and Birth Certificate for Parental Occupation and Industry by Case-control Status

From: Validity of parental work information on the birth certificate

  Mothera Fatherb
  Cases Controls Cases Controls
  N % Missing included % Missing excluded N % Missing included % Missing excluded N % Missing included % Missing excluded N % Missing included % Missing excluded
Occupation
Agreement 226 74.6 76.9 263 78.7 79.7 184 64.1 76.0 198 62.7 74.4
Disagreement 68 22.4 23.1 67 20.1 20.3 58 20.2 24.0 68 21.5 25.6
Unknownc 9 3.0 - 4 1.2 - 45 15.7 - 50 15.8 -
Total 303 100.0 100.0 334 100.0 100.0 287 100.0 100.0 316 100.0 100.0
Industry
Agreement 216 71.3 74.5 256 76.6 77.8 179 63.0 76.2 187 59.2 73.3
Disagreement 74 24.4 25.5 73 21.9 22.2 56 19.7 23.8 68 21.5 26.7
Unknownc 13 4.3 - 5 1.5 - 49 17.3 - 61 19.3 -
Total 303 100.0 100.0 334 100.0 100.0 284 100.0 100.0 316 100.0 100.0
  1. aIn the interview, 4 case mothers and 8 control mothers were missing information about occupation and industry.
  2. bIn the interview, 20 case fathers and 26 control fathers were missing information about occupation and 23 case fathers and 26 control fathers were missing information about industry.
  3. cUnknown category includes subjects with missing information on the birth certificate.