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Table 2 Accuracy of maternal Indigenous status in the MDC and RBDM birth 2001-2005, NSW

From: Improvement of maternal Aboriginality in NSW birth data

   Consistency MDC RBDM birth
Year        
  n n 1 % Sensitivity Specificity Sensitivity Specificity
2001 80,027 79,191 98.96 65.47 99.77 87.20 99.17
2002 78,338 77,495 98.92 65.30 99.74 85.90 99.16
2003 77,756 76,966 98.98 66.69 99.75 86.59 99.21
2004 79,389 78,555 98.95 67.15 99.72 85.32 99.21
2005 74,631 73,974 99.12 69.33 99.76 85.88 99.35
Total 390,141 386,181 98.98 66.70 99.75 86.18 99.22
  1. Missing records total 8,066, accounting for 2.0%.
  2. n: number of linked records between MDC and RBDM
  3. n1: consistent number between MDC and RBDM