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Table 2 Agreement in education level according to data source: 45419 MoBa mothers. Numbers in cells (fraction of total)

From: Information bias of social gradients in sickness absence: a comparison of self-report data in the Norwegian Mother and Child Cohort Study (MoBa) and data in national registries

  Self-report data education level
Lower secondary or less Upper secondary, basic Upper secondary, complete Tertiary, undergraduate Tertiary, graduate Total
Register data education level
 Lower secondary or less 594 (0.013) 829 (0.018) 592 (0.013) 60 (0.001) 10 (0.000) 2085 (0.046)
 Upper secondary, basic 19 (0.000) 523 (0.012) 902 (0.020) 33 (0.001) 8 (0.000) 1485 (0.033)
 Upper secondary, complete 185 (0.004) 632 (0.014) 7910 (0.174) 1246 (0.027) 214 (0.005) 10,187 (0.224)
 Tertiary, undergraduate 31 (0.001) 90 (0.002) 1487 (0.033) 17,862 (0.393) 4180 (0.092) 23,650 (0.521)
 Tertiary, graduate 1 (0.000) 2 (0.000) 88 (0.002) 576 (0.013) 7345 (0.162) 8012 (0.176)
 Total 830 (0.018) 2076 (0.046) 10,979 (0.242) 19,777 (0.435) 11,757 (0.259) 45,419 (1.000)