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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Paediatr Perinat Epidemiol. 2014 Jul 18;28(5):362–371. doi: 10.1111/ppe.12138

Table 1.

Regional distribution of data from the Medical Birth Registry of Norway (MBRN) and the received gold standard sources. Data for women participating in the Norwegian Mother and Child Cohort Study and giving birth in Norway, 1999-2010.

MBRN Gold standard sources
Region MBRN data Received antenatal charts
and ICD10
Only received antenatal
charts
Only received ICD10
codes
Number Column % Number Row % Number Row % Number Row %
East 926 17.3 556 60.0 352 38.0 13 1.4
South 1,380 25.8 1,099 79.6 229 16.6 49 3.6
West 1,821 34.1 1,672 91.8 37 2.0 108 5.9
Middle 871 16.3 738 84.7 97 11.1 33 3.8
North 342 6.4 283 82.7 41 12.0 15 4.4
Total 5,340 100 4,348 81.4 756 14.2 218 b 4.1

Abbreviations: ICD10, International Classification of Diseases, 10th revision; MBRN, Medical Birth Registry of Norway

b

For an additional 18 women we only received hospital summaries/notes with insufficient information.