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%