The aim of this study was to determine whether screening followed by brief PSC provided by primary care doctors could improve the quality of life of elderly patients with unrecognized psychological problems in primary care. The following hypotheses were tested:

1. Elderly patients screened positive of psychological problems had poorer health-related quality of life (HRQOL) than those who were screened negative.
2. Primary care doctors could be trained to provide brief PST.
3. Brief PST by a trained primary care doctor could improve the HRQOL of the elderly who were screened positive for psychological problems.

Design & methods: A prospective single-blind randomised controlled trial (RCT) on 299 patients aged 60 or above without any known psychological diseases but screened positive for psychological problems by the Hospital Anxiety and Depression Scale (HADS). Subjects were randomised to problem-solving (PST) or video-viewing (placebo). All subjects continued with their usual care and were followed up by telephone at 6, 12, 26 and 52 weeks.Changes in SF-36 HRQOL scores, HADS scores and monthly consultation rates at 6, 12, 26 and 52 weeks within groups and between groups.

Inclusion Criteria:

• Aged 60 or above
• not known to have any psychological problem
• HADS Depression score 6 or above, or Anxiety Score 3 or above
• Written consent to study

Exclusion Criteria:

• known psychological disease diagnosed by a registered doctor
• history of taking any psychotropic drug prescribed by a registered doctor within the last year;
• suicidal plan or strong suicidal thought;
• psychotic symptom;
• impairment in cognitive function; or
• communication problem.