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Table 1 Number and percentage of linked records by year, Brazil, 2001-2015

From: Examining the quality of record linkage process using nationwide Brazilian administrative databases to build a large birth cohort

Year

Total

Linked

N

%

2001

2,448,609

961,605

39.27

2002

2,319,071

1,175,223

50.68

2003

2,224,872

1,179,781

53.03

2004

2,165,661

1,144,809

52.86

2005

2,161,484

1,183,292

54.74

2006

2,050,534

1,271,179

61.99

2007

1,961,446

1,087,254

55.43

2008

1,936,675

1,077,781

55.65

2009

1,855,919

1,052,394

56.70

2010

1,778,515

1,067,417

60.02

2011*

1,765,211

1,249,492

70.78

2012

1,662,414

1,251,251

75.27

2013

1,505,476

1,227,162

81.51

2014

1,271,156

1,043,499

82.09

2015

592,848

475,275

80.17

Total

27,699,891

16,447,414

59.38

  1. *from 2011 the maternal date of birth was available