Table:
Exclusion stage	Reason for exclusion	n	% within stage
Prior to contacting patients (of n = 174)	No telephone number recorded	6	3.5
Dementia documented	2	1.1
No record that the patient had received a study information sheet1	55	31.6
Subtotal	63	36.2
On patient contact (of n = 111)	No reply to telephone call	29	26.1
Patient declined to participate	1	0.9
Subtotal	30	27.0

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| Exclusion stage | Reason for exclusion | n | % within stage | 
 | --- | --- | --- | --- | 
 | Prior to contacting patients (of n = 174) | No telephone number recorded | 6 | 3.5 | 
 |  | Dementia documented | 2 | 1.1 | 
 |  | No record that the patient had received a study information sheet1 | 55 | 31.6 | 
 |  | Subtotal | 63 | 36.2 | 
 | On patient contact (of n = 111) | No reply to telephone call | 29 | 26.1 | 
 |  | Patient declined to participate | 1 | 0.9 | 
 |  | Subtotal | 30 | 27.0 |