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Biomedical subjects

D W Belcher

Publications and source records attributed to D W Belcher.

At least 19 recordsLinked to original sources
PubMed2004

Protocol and monitoring to improve snake bite outcomes in rural Ghana.

A study was conducted in Mathias Hospital, Yeji, an area of Ghana, where snake bite cases are an important cause of morbidity and mortality, with a case fatality rate of 11% (8/72). Case management difficulties included uncertainty about the assessment of the severity of envenoming, the dosage of antivenom, and the response to treatment. An intervention with several components was introduced: development of a treatment protocol, staff training, monitoring of compliance and patient education. During a 33-month post-intervention period there was excellent protocol compliance, fewer snake bite complications, and a fall in mortality rate to 1.3% (3/238) compared with a 15-month baseline review. There was a 50% increase in snake bite admissions and fewer delays. To improve snake bite outcomes in comparable settings, particularly if inexperienced staff are involved in care, we recommend a similar quality assurance project, involving case review and use of a treatment protocol with monitoring of compliance to sustain an improved approach.

Adult↗
PubMed2000

A randomized controlled trial of a clinic-based support staff intervention to increase the rate of fecal occult blood test ordering.

BACKGROUND: Colorectal cancer is the second most common fatal malignancy in the United States. Early detection using fecal occult blood tests has been shown to reduce mortality, but these tests are underutilized among those eligible for this screening. Attempts to increase use of fecal occult blood tests in eligible populations have focused on the provider, patient, or system. But none have examined whether a support-staff intervention is effective in achieving this aim. We therefore conducted a randomized controlled trial to test the impact of authorizing support staff to order fecal occult blood tests in a general internal medicine clinic organized into four teams. METHODS: A total of 1,109 patients were included in the study, 545 of whom were in the two teams randomized to treatment. Univariate and multivariate regression analyses were used to evaluate the impact of the intervention. RESULTS: The intervention resulted in significantly more fecal occult blood test ordering in the treatment group than in the control group for all patients (52% vs 15%, P < 0.001). Treatment fecal occult blood test cards were returned as frequently as the control cards for all patients (44% vs 48%, P = 0.571). CONCLUSION: Delegation of selected screening tasks to support staff can enhance patient access to preventive care.

Colorectal Neoplasms↗
PubMed1990

Implementing preventive services. Success and failure in an outpatient trial.

Physicians endorse prevention but provide only low levels of screening, health counseling, and immunization. Between 1981 and 1986, a randomized controlled trial was conducted at the Seattle (Wash) Veterans Affairs Medical Center to assess the effectiveness of the following three methods of delivery of preventive services: (1) a physician-oriented model that includes education and motivation, a chart flowsheet listing recommended activities, and periodic feedback about performance; (2) a patient education model in which patients were mailed an informative brochure advising them to ask physicians for preventive services as depicted in a patient-held pocket guide; and (3) a health promotion clinic that patients were invited to attend. A control group received their usual care. A total of 1224 male outpatients were enrolled in the trial. Baseline prevention rates for 12 age-specific prevention activities were below 25%. Neither the control group rates during the 5-year trial nor the rates for the two educational models, either singly or as a combined intervention, changed. Only the health promotion clinic model was effective, tripling prevention rates in its first year and sustaining these levels for all 5 years. It is difficult to change the clinic roles of experienced physicians and their long-term patients in a specialized multiclinic setting. Providing a separate health promotion clinic option is popular with patients, bypasses gatekeeper barriers, is reasonable in cost, and warrants wider application.

Adult↗
PubMed1984

Reliability of two measures of life stress among outpatients at a Veterans Hospital.

To measure test-retest reliability, 38 Veterans Administration clinic patients completed a modification of the Sarason Life Experience Survey (LES) twice within several weeks. Summary scores were found to be more reliable than scores on individual questions. Patients attending the Mental Hygiene Clinic responded less reliably than other patients. The "stress ladder"--a simple summary score measure--was found to be the most reliable measure of all.

Hospitals, Veterans↗
PubMed1980

Regionalization in the Veterans Administration health care system: rhetoric and realities.

Criticisms of the Veterans Administration health care system have centered in part on the ability of the system to reallocate resources in response to the changing needs of veterans. VA hospitals use traditional budgeting and planning processes; new programs and projected increases in workload are added to the previous year's budget to yield the budget for the succeeding year. Since these activities occur on an individual institution bases, there is little effort to plan cooperatively between hospitals or to reassess the fundamental allocation of resources based on veteran needs. Over the past two years, the VA has devised a program of regionalized budgeting and planming. The publicity surrounding VA regionalization reflects the idealized potential of shared resources and joint planning within each of the newly created VA medical districts. The reality of the program, however, when examined on a national basis and illustrated by an in-depth study of five hospitals in one district, indicates that there has been little use of resource allocation methodology and that few planning resources have been allocated to this effort. As a result, the district program is a collation of individual hospital budgets, and plans to yield the district budget and plans. Regionalization is unlikely to succeed in any meaningful manner within the VA unless further changes occur in district resource allocation methods.

Age Factors↗
PubMed1979

Perception and management of guinea worm disease among Ghanaian villagers. A framework for differential health education planning.

A survey, resulted from the immediate need to understand the health behaviour of Southern Ghanaian villagers during an epidemic of guinea worm disease. While such problems are usually studied at a time when the epidemic has abated, this study emphasized getting into the field quickly to obtain data before the epidemic passed. If behaviour models are to have value for programme planning in the developing world, they should be amenable to such quick sample approaches. The study involved a survey on attitudes, beliefs and practices related to gent. Results showed distinctive and somewhat differing perceptions of susceptibility, seriousness, curability and preventability for the two ethnic groups within a single geographic area. The analysis of the survey results permitted suggestion of various educational strategies for both of the groups. This quick survey approach must be more refined before it has wide applicability. There appears to be a significant potential for developing a simplified checklist to be used by health workers in carrying a rapid educational diagnosis of a specific health problem for a given population.

Adolescent↗
PubMed1979

Comparison of methods for estimating the frequency of paralytic poliomyelitis in developing countries.

Standard reporting systems have proved to be unreliable in estimating the frequency of paralytic poliomyelitis in many developing countries. The effectiveness of three survey methods for estimating the prevalence of lameness attributable to poliomyelitis were compared in the Danfa Health Project district of rural Ghana. Lameness was studied because it is easily identified by inexpensive survey techniques. A postal survey of school headteachers was the least costly and most accurate method, giving a prevalence of lameness attributable to poliomyelitis of 7.2 per 1000 schoolchildren. This method is recommended for countries with an extensive network of primary schools. Medical examinations in a village health survey yielded a prevalence of 4.6 per 1000 children aged 6-15 years. This method was relatively expensive but could be justified if the survey was multipurpose. A question added to the annual district census showed a prevalence of 2.2 per 1000 children, a rate still many times higher than estimates from national statistics. The inclusion of such a question in a census or other national survey entails little additional cost and with more careful questioning results should improve. Repeated surveys can be used to assess the success of poliomyelitis vaccination programmes.

Adolescent↗
PubMed1978

The prevalence of inguinal hernia in adult Ghanaian males.

Indirect inguinal hernia imposes a heavy patient caseload on surgical services in Africa. This study, conducted in rural southern Ghana in 1973, showed a marked increase in prevalence in adult males aged 55 years and older. In contrast, hospitalized patients undergoing herniorrhaphy in Accra were evenly distributed through all age groups. As hospital services expand and rural patients have better access to surgical care, recent innovations such as short stay surgery may be important for coping with rising patient demand.

Adolescent↗
PubMed1977

Outside Europe. Is poliomyelitis a serious problem in developing countries?--the Danfa experience.

Children were examined for lameness in the Danfa Project district of rural Ghana to assess the impact of endemic poliomyelitis and to test a widely held hypothesis that paralytic poliomyelitis is relatively rare in such districts (less than 1 per 1000 children affected). The observed prevalence of lameness attributable to poliomyelitis was 7 per 1000 school-aged children, and the annual incidence is estimated to be at least 28 per 100 000 population. Although no evidence for an epidemic was found, these rates are comparable with those in the USA and Europe during the years of severe epidemics and indicate that a high price is being paid in the Danfa district for the natural acquisition of immunity. As a result, immunisation against poliomyelitis has been given high priority. A teacher questionnaire was also tested for use in postal surveys as a rapid means of estimating the prevalence of lamenes attributable to poliomyelitis in countries with a reasonable network of primary schools.

Adolescent↗
PubMed1977

Endemic pyoderma in Ghana: a survey in rural villages.

The prevalence and characteristics of pyoderma in a randomly sampled rural population in Ghana has been studied. Findings are compared with studies reported in recent literature which describe pyoderma in other countries. In the present study, conducted in 1975 as part of the Danfa Project's Village Health Survey, pyoderma was diagnosed in 19.4% of villagers examined. Peak rates occurred in the five to nine-year-old age group, and pyoderma was more prevalent among males and unskilled labourers and farmers than among those engaged in more sedentary occupations. Non-bullous impetigo was most common (72% of lesions) and, in contrast to other studies, non-group A-streptococci predominated in these lesions (82% of streptococcal lesions were Group G, 18% Group C). Current knowledge of transmission and control of pyoderma is discussed.

Age Factors↗
PubMed1977

Blood pressure distribution in a rural Ghanaian population.

Hypertension and related complications appear, from clinical impression, to be increasing problems in urban Ghanaians. In early 1973 we conducted a blood pressure survey in 20 rural Ghanaian villages to determine the prevalence of hypertension, in comparison with studies done in Accra residents and black Americans. Rural Ghanaians had mean systolic and diastolic blood pressures which were lower at all ages than the urban groups. 2-5% of the subjects aged 16 to 54 years had diastolic blood pressures of 95 or higher mm Hg. These findings are discussed in view of the proposed hypertension control programme in Accra. We conclude that hypertension is not a significant health problem in rural Ghanaians and that large-scale hypertension case-finding and intervention programmes should be confined to urban populations.

Age Factors↗
PubMed1977

Meningococcal meningitis in northern Ghana: epidemiology and control measures.

Hospitalized meningococcal meningitis patients in northeastern Ghana during 1972-1973 were studied to provide baseline information about case clustering and age-specific attack rates to guide meningitis control programs. In 1973, group A meningococci were prevalent and 7% of isolates were sulfadiazine-resistant. In contrast to the age distribution of meningococcal meningitis in North and South America, peak attack rates occurred in 10- to 14-year-old Ghanaians. A mass immunization campaign using group A polysaccharide vaccine in heavily populated areas of the Bawku and Nalgerigu districts is recommended.

Adolescent↗
PubMed1977

Haematological values in a rural Ghanaian population.

Early in 1973 residents of 20 randomly selected rural villages in southern Ghana were studied to determine the prevalence of anaemia. Laboratory tests were conducted to learn what haemoglobin phenotypes were present and the distribution of white blood cell counts. Moderate anaemia (below 10 g%) was fairly common, particularly in children and 15--29 year old women, but severe anaemia (below 7 g%) was rare. Malaria infection and diets with low iron content were major factors affecting haemoglobin level, while hookworm infestation and high parity had little effect. Neutropenia (about two-thirds of Caucasian values) and the distribution of haemoglobin types (AS 16.3%; AC 11.1%) were similar to findings in earlier studies. To improve haemoglobin levels in children and young women, low-cost intervention programmes based on volunteer village workers are recommended.

Adolescent↗
PubMed1976

A household morbidity survey in rural Africa.

A household morbidity interview survey with 2,000 randomly selected households (14,729 people) in rural Ghana is reported for a two-week recall period; 20-8 percent of people reported some illness, injury or disability. This prevalence is lower than reported during surveys in Columbia, USA, Britain and Australia. Adults averaged 0-5 days lost from work, which results in an estimated annual work loss of 13-4 days. The reported illness varied markedly with age, with a peak in middle-aged adults and females in their reproductive years. The use of clinic services varied with age (they were sought particularly for pre-school children), type of condition, and accessibility. The use of drug sellers was surprisingly high, about half that of clinic attendance, and increased in those geographical areas where clinics were least accessible.

Adolescent↗