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David P Weller

Publications and source records attributed to David P Weller.

18 recordsLinked to original sources

Supporting research in primary care: are practice-based research networks the missing link?

Despite the size and importance of primary health care (including general practice) within the health system, traditional research output has been relatively low, both here and overseas. General-practice and primary-care research in Australia has been criticised for the preponderance of small-scale, descriptive and survey-based studies. If we are to conduct larger-scale clinical, epidemiological and health-services research, new structures and processes are needed. The research networks set up under the first phase of the Australian Government's Primary Health Care Research, Evaluation and Development (PHCRED) Strategy have tended to focus on up-skilling, research literacy and dissemination. This is important, but for general-practice research to evolve, a new type of practice-based research network is needed. These new practice-based networks require commitment and funding from policymakers, a base in academic departments, plus active involvement from Divisions of General Practice and the practitioners themselves.

Attitude of Health Personnel↗

Predicting colorectal cancer risk in patients with rectal bleeding.

BACKGROUND: Rectal bleeding is an important symptom of colorectal cancer but has low predictive value in primary care. AIM: To determine which characteristics of rectal bleeding, along with other factors, are predictive of colorectal cancer. DESIGN OF STUDY: Observation study of patients with rectal bleeding referred to an open-access diagnostic clinic. SETTING: Primary care, southern England. METHOD: Symptom data were collected, using a self-completed questionnaire. Logistic regression techniques were used to determine predictors of colorectal cancer. RESULTS: There were 604 patients in the study and 22 (3.6%, 95% confidence interval [CI] = 2.0% to 5.2%) were diagnosed with colorectal cancer. Significant predictors of colorectal cancer were found to be age (<50 years: odds ratio [OR] = 1; 50-69 years: OR = 5.1, 95% CI = 1.4 to 18.6; > or = 70 years: OR = 8.2, 95% CI = 2.1 to 31.8) and blood mixed with the stool (Likelihood ratio [LR] 1.5; adjusted OR = 3.8; 95% CI = 1.4 to 10.5). Presence of haemorrhoids associated with bright red bleeding not mixed with stool reduced the likelihood of cancer (OR = 0.4, 95% CI = 0.1 to 1.2) but did not eliminate it--a cancer was present in 2% of patients with these symptoms. CONCLUSION: Patient-reported type of rectal bleeding as an isolated symptom has insufficient diagnostic value to be useful in general practice. By studying referred patients, we may even have overestimated its value. At best, it could be useful as a component of a composite symptom score to guide referral decisions.

Aged↗

What drives the NHS?

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Efficiency, Organizational↗