From: Recruitment to a large scale randomised controlled clinical trial in primary care: the Helicobacter Eradication Aspirin Trial (HEAT)
Patient sex
Total number of patients invited
Response to invitation
EOI
No
May in future
No response
Female
72,644
11,146 (15.3%)1
14,905 (20.5%)
1886 (2.6%)
44,707 (61.5%)
Male
116,231
27,625 (23.8%)2
19,274 (16.6%)
2918 (2.5%)
66,414 (57.1%)