Community surveys of late-life depression: who are the non-responders?

BACKGROUND: community surveys of depression among older people may be particularly prone to non-response. Information on non-responders is difficult to obtain and often limited to demographics. Therefore, the full extent of response bias is not always known. OBJECTIVE: to determine factors associated with non-response at each stage of a two-stage survey of late-life depression. SETTING: one large general practice (registered population >30000) serving the market town of Melton Mowbray, Leicestershire, UK. SUBJECTS: community residents (n=2633) aged 65-74 years registered with the practice. METHODS: a two-stage community survey of patients aged 65-74 years. The first stage was an interviewer-administered general health survey including a measure of depressive symptoms. We asked those who screened positive for possible depression to undergo a semi-structured psychiatric interview. We compared use of services and medication by non-responders and responders to both stages using primary-care records. We compared Townsend deprivation scores using data obtained from the 1991 census. RESULTS: responders to stage 1 were more likely to use both primary [odds ratio (OR) 1.65, 95% confidence interval (CI) 1.38-1.96] and secondary (OR 1.59, 95% CI 1.25-2.02) services and tended to live in more affluent areas (P=0.002). At stage 2, the only difference observed was a lower level of use of tranquillisers or hypnotics among responders (OR 0.27, 95% CI 0.11-0.67). CONCLUSIONS: older people with low levels of contact with health services may be under-represented in community surveys of depression. Investigators should look outside traditional health settings to promote the uptake of response in these studies.

Treatments for late life depression in primary care--a systematic review.

BACKGROUND: Depression is common among older people. It is associated with increased mortality and use of health services. We could identify no prior systematic review of treatment for depression in either primary care attenders or population samples of older people. OBJECTIVES: The aim of this study was to carry out a systematic review of trials of treatments for depression of patients over 60 years of age in primary care or population samples. METHODS: We searched Medline, Embase, Cinahl, the Cochrane Library, Psyclit, BIDS--Social Science and BIDS--Science Citation Indices for trials of drug treatment, interpersonal psychotherapy, cognitive behavioural psychotherapy, counselling and social interventions for late life depression in English, French or German published between 1980 and June 1999. RESULTS: Of the studies identified, only two were of patients over 60 years of age and met all inclusion criteria for content and quality. Three further studies that were not restricted to but included patients over the age of 60 years also fulfilled our criteria. We found no studies of psychological therapies for depression in older people. With few exceptions, studies were limited to older people who reached a diagnostic threshold and excluded those with 'subcase level depression'. CONCLUSION: There is little evidence of effectiveness for a variety of treatment approaches for depression in older people in primary care, particularly in those with less severe depression. As older people take more medication, making contra-indications to the use of antidepressant drugs more likely, there is a pressing need for studies of the efficacy of non-pharmacological interventions in primary care settings.

Public health skills in primary care in South West England--a survey of training needs, obstacles and solutions.

The UK government is moving primary care towards a more health needs led service. This will require a greater awareness of public health skills among primary care staff. We therefore sent a postal questionnaire to the chairmen of primary care groups (general practitioners), the chief officers of primary care groups, directors of public health, nurse advisors of health authorities, directors of community nursing and directors of midwifery in the South West region of England. Respondents were asked about skills in health needs assessment, health service planning and other public health skills among general practitioners, health visitors and midwives. The survey also covered perceived obstacles to the acquisition of such skills and possible solutions. The response rate was 67% (96/143). Eighty percent of primary care groups returned at least one reply. Sixty-four percent had either not considered the problem or considered it but not acted. Fifty percent of directors of public health felt that they could not provide more training to non-specialist staff. Most organisations provided little training in public health skills to non-specialist staff despite a perceived skill shortage particularly in health promotion, advocacy and the evaluation of the effectiveness and efficiency of services. We conclude that primary care groups and public health departments need to agree how to access public health advice. Primary care groups need to identify individuals with an interest in strategic working and service planning, identify their skill deficits and seek appropriate training.

Limitations of national guidelines in the management of an outbreak of tuberculosis.

National guidelines offer no clear definition of a close (non-household) contact of tuberculosis. The resulting lack of distinction between close and casual contacts may lead to excessive screening in outbreaks of pulmonary tuberculosis in the United Kingdom. Poor compliance with chemoprophylaxis suggests that priority should be given to the follow up of high risk contacts, who should be more clearly defined. A review of the management of a family outbreak of tuberculosis illustrates the problem. Fifty-nine out of 213 non-household contacts screened for infection had grade 3 and 4 Heaf reactions and none developed clinical tuberculosis within one year. Three of the 59 did not attend for chest radiography and a further 11 patients did not attend the outpatients appointment offered. Twenty-three took chemoprophylaxis for three months, 14 did not complete chemoprophylaxis, six (11%) declined it and two were offered x-ray follow up.

Chemical incident management: gaseous emissions from a stockpile of coal.

Spontaneous combustion of coal releases a wide range of airborne pollutants which, in high concentrations, may be hazardous to health. Little is known about how the effects on health change in relation to the release of multiple substances. This article reports an incident in which a stockpile of coal released potentially harmful gases into the environment. Although the resultant health effects reported were few, the co-ordinated response by local authorities and health authorities highlighted the advantage of a multidisciplinary approach. Public health departments need to be aware of major chemical hazards within their district. Prompt environmental monitoring and exposure measurement needs to be arranged as this is crucial to making an appropriate response. Updated registers are needed from private companies and public bodies; who can provide timely measurements of chemical hazards. Health districts with more than one local authority may benefit from pooling resources and knowledge in order to prepare for such an incident.

Recommendations for future studies: a systematic review of educational interventions in primary care settings.

Systematic reviews are an important part of the current move towards evidence-based practice. Independent reviewers use a variety of search strategies to identify and assess relevant articles in the field of concern. Criteria for quality must be agreed and articles evaluated accordingly. This study systematically reviewed educational interventions targeting physicians in primary care (excluding hospital clinic and academic settings) to determine their effectiveness in changing behaviour and to investigate whether studies gave information about the resource implications of the interventions described and their rationale for choosing a particular target group. Studies in English, French, or German language journals were included. The review applied the criteria of the Cochrane Collaboration for methodological quality of studies (but was not conducted under the auspices of the Cochrane Collaboration). The results showed that relatively few studies had occurred in primary care compared with academic and hospital clinic settings. Many articles did not fit the criteria for rigour of method, and those that did were very heterogeneous in method and target group. Only two studies assessed resource implications, and one study also calculated economic benefits. The review suggests that future studies should either target geographical areas or doctors with an identifiable learning need associated with patient outcome, and that studies should be evaluated on their 'intention to educate'. Evaluations of educational initiatives need to describe the resource implications versus measurable benefits of the intervention to make their studies useful to policymakers and planners of educational provision.