Table S8
Reading coding systems usage (CTv3 and Read codes version used)
Are the Clinical Terms version 3 used (CTv3)?
Are Read Codes used?
None
No Data
n
%
n
%
n
%
n
%
Primary care
2
6
3
10
25
81
1
3
Cancer registry
0
0
1
7
11
73
3
20
Genetic ‘Biobank’
0
0
1
9
10
91
0
0
Total
2
4
5
9
46
81
4
6