Assertion: trial's patient | /r/AtLocation | one of three groups
Facets:
value: according to preference
type: CAUSE
Source sentences:
text: Patients may be placed in one of three groups according to preference and willingness to be randomised: (a) patients who have no strong preferences and therefore consent to randomisation; (b) patients with a preference who still consent to randomisation; and (c) patients who refuse randomisation and opt for their treatment of choice