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Table 1 Details of verification source for 106 self-reported strokes between 2002 and 2009

From: Validating self-reported strokes in a longitudinal UK cohort study (Whitehall II): Extracting information from hospital medical records versus the Hospital Episode Statistics database

Source of verification

Number

Percent

Not verified – external evidence not stroke

8

7.5%

Not verified – no external confirmation

4

3.8%

HES and hospital notes

55

51.9%

HES only

11

10.4%

Hospital notes only

16

15.1%

GP only

12

11.3%

 

106

100.0%