Table 2 Inclusion and exclusion criteria

Patients:

Patients/Carers:

(i) appropriate referral to BIS

(i) unable to give informed consent;

(ii) aged 18 years+

(ii) previously used BIS;

(iii) any patient not meeting any exclusion criteria

(iii) demented/confused;

(iv) learning difficulties;

(vi) other vulnerable groups e.g. head injury, severe trauma, mental illness;

(vii) not meeting all inclusion criteria.

Carer:

(i) informal carers (significant others, relatives, friends or neighbours) of Phase III RCT recruits

(ii) aged 18 years+

(iii) any carer not meeting any exclusion criteria.