A randomised controlled trial of enhanced key-worker liaison psychiatry in general practice

Despite much interest in the development of liaison psychiatry in general practice there is no clear evidence that any form of intervention is effective. We carried out a pilot randomised controlled trial, the first we believe into this type of care, of one such model; enhanced liaison with individual patients by key workers, in general practices in Paddington and North Kensington in London.

All patients referred from primary to secondary psychiatric care from four general practices over a 10-month period, and still in contact with services, were eligible to be included in the study. The practices were allocated in a constrained randomised procedure to either normal care or enhanced key-worker liaison. The latter involved encouraging individual key workers to adopt improved communication between primary and secondary care. Baseline assessments of symptomatology and social functioning were made before randomisation and after 6 months by an independent researcher.

Of the 84 eligible patients, 43 were seen at baseline and 34 re-assessed after 6 months. There was no difference between the clinical outcomes in the two groups but self-rated social function was significantly improved in the enhanced liaison service compared with standard care (adjusted P = 0.05). Costs were similar but somewhat more expensive for enhanced liaison. Less than half (42 %) of all key workers in the enhanced liaison arm felt they had involved the primary health care team more in the care of their patient, with 21 % of these altering their practice markedly during the study.

It is concluded that without additional resources enhanced key-worker liaison for psychiatry in primary and secondary care has limited benefits although this does not necessarily apply to other forms of liaison practice.