General Practice and Primary Care - Research Publications
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ItemNo Preview AvailableMale preponderance in early diagnosed type 2 diabetes is associated with the ARE insertion/deletion polymorphism in the PPP1R3A locus -: art. no. 11(BIOMED CENTRAL LTD, 2003-06-28)BACKGROUND: The ARE insertion/deletion polymorphism of PPP1R3A has been associated with variation in glycaemic parameters and prevalence of diabetes. We have investigated its role in age of diagnosis, body weight and glycaemic control in 1,950 individuals with type 2 diabetes in Tayside, Scotland, and compared the ARE2 allele frequencies with 1,014 local schoolchildren. RESULTS: Men homozygous for the rarer allele (ARE2) were younger at diagnosis than ARE1 homozygotes (p = 0.008). Conversely, women ARE2 homozygotes were diagnosed later than ARE1 homozygotes (p = 0.036). Thus, men possessing the rarer (ARE2) allele were diagnosed with type 2 diabetes earlier than women (p < 0.000001). In contrast, there was no difference in age of diagnosis by gender in those individuals carrying only the common ARE1 variant. Furthermore, although there was no difference in the frequency between the children and the type 2 diabetic population overall, marked differences in allele frequencies were noted by gender and age-of diagnosis. The ARE2 allele frequency in early diagnosed males (diagnosed earlier than the first quartile of the overall ages at diagnosis) was higher than that found in both later diagnosed males and healthy children (p = 0.021 and p = 0.03 respectively). By contrast, the frequency in early diagnosed females was significantly lower than later diagnosed females and that found in children (p = 0.021 and p = 0.037). Comparison of the male to female ratios at different ages-diagnosed confirms a known phenomenon that men are much more prone to early type 2 diabetes than women. When this feature was examined by the common ARE 1/1 genotype we found that the male to female ratio remained at unity with all ages of diagnosis, however, carriers of the ARE2 variant displayed a marked preponderance of early male diagnosis (p = 0.003). CONCLUSION: The ARE2 allele of PPP1R3A is associated with a male preponderance to early diagnosed type 2 diabetes. Susceptibility to type 2 diabetes in later life is not modulated by the ARE2 allele in either sex.
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ItemNo Preview AvailablePatients' preferences for involvement in treatment decision making in Japan.(Springer Science and Business Media LLC, 2004-03-01)BACKGROUND: A number of previous studies have suggested that the Japanese have few opportunities to participate in medical decision-making, as a result both of entrenched physician paternalism and national characteristics of dependency and passivity. The hypothesis that Japanese patients would wish to participate in treatment decision-making if adequate information were provided, and the decision to be made was clearly identified, was tested by interview survey. METHODS: The subjects were diabetic patients at a single outpatient clinic in Kyoto. One of three case study vignettes (pneumonia, gangrene or cancer) was randomly assigned to each subject and, employing face-to-face interviews, the subjects were asked what their wishes would be as patients, for treatment information, participation in decision-making and family involvement. RESULTS: 134 patients participated in the study, representing a response rate of 90%. The overall proportions of respondents who preferred active, collaborative, and passive roles were 12%, 71%, and 17%, respectively. Respondents to the cancer vignette were less likely to prefer an active role and were more likely to prefer family involvement in decision-making compared to non-cancer vignette respondents. If a physician's recommendation conflicted with their own wishes, 60% of the respondents for each vignette answered that they would choose to respect the physician's opinion, while few respondents would give the family's preference primary importance. CONCLUSIONS: Our study suggested that a majority of Japanese patients have positive attitudes towards participation in medical decision making if they are fully informed. Physicians will give greater patient satisfaction if they respond to the desire of patients for participation in decision-making.
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ItemNo Preview AvailableThe PAV trial: does lactobacillus prevent post-antibiotic vulvovaginal candidiasis? Protocol of a randomised controlled trial [ISRCTN24141277].(Springer Science and Business Media LLC, 2004-03-28)BACKGROUND: Complementary and alternative medicines are used by many consumers, and increasingly are being incorporated into the general practitioner's armamentarium. Despite widespread usage, the evidence base for most complementary therapies is weak or non-existent. Post-antibiotic vulvovaginitis is a common problem in general practice, for which complementary therapies are often used. A recent study in Melbourne, Australia, found that 40% of women with a past history of vulvovaginitis had used probiotic Lactobacillus species to prevent or treat post-antibiotic vulvovaginitis. There is no evidence that this therapy is effective. This study aims to test whether oral or vaginal lactobacillus is effective in the prevention of post-antibiotic vulvovaginitis. METHODS/DESIGN: A randomised placebo-controlled blinded 2 x 2 factorial design is being used. General practitioners or pharmacists approach non-pregnant women, aged 18-50 years, who present with a non-genital infection requiring a short course of oral antibiotics, to participate in the study. Participants are randomised in a four group factorial design either to oral lactobacillus powder or placebo and either vaginal lactobacillus pessaries or placebo. These interventions are taken while on antibiotics and for four days afterwards or until symptoms of vaginitis develop. Women self collect a vaginal swab for culture of Candida species and complete a survey at baseline and again four days after completing their study medications. The sample size (a total of 496--124 in each factorial group) is calculated to identify a reduction of half in post-antibiotic vulvovaginitis from 23%, while allowing for a 25% drop-out. An independent Data Monitoring Committee is supervising the trial. Analysis will be intention-to-treat, with two pre-specified main comparisons: (i) oral lactobacillus versus placebo and (ii) vaginal lactobacillus versus placebo.
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ItemNo Preview AvailablePRISM (Program of Resources, Information and Support for Mothers) Protocol for a community-randomised trial [ISRCTN03464021](BMC, 2003-11-20)BACKGROUND: In the year after birth one in six women has a depressive illness, and 30% are still depressed, or depressed again, when their child is 2 years old, 94% experience at least one major health problem (e.g. back pain, perineal pain, mastitis, urinary or faecal incontinence), 26% experience sexual problems and almost 20% have relationship problems with partners. Women with depression report less practical and emotional support from partners, less social support overall, more negative life events, and poorer physical health. Their perceptions of factors contributing to depression are lack of support, isolation, exhaustion and physical health problems. Fewer than one in three affected women seek help in primary care despite frequent contacts. METHODS/DESIGN: PRISM aims to reduce depression and physical health problems of recent mothers through primary care strategies to increase practitioners' response to these issues, and through community-based strategies to develop broader family and community supports for recent mothers. Eligible local governments will be recruited and randomised to intervention or comparison arms, after stratification (urban/rural, size, birth numbers, extent of community activity), avoiding contiguous boundaries. Maternal depression and physical health will be measured six months after birth, in a one year cohort of mothers, in intervention and comparison communities. The sample size to detect a 20% relative reduction in depression, adjusting for cluster sampling, and estimating a population response fraction of 67% is 5740 x 2. Analysis of the physical and mental health outcomes, by intention to treat, will adjust for the correlated structure of the data.
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ItemObserved intra-cluster correlation coefficients in a cluster survey sample of patient encounters in general practice in Australia.(Springer Science and Business Media LLC, 2004-12-22)BACKGROUND: Cluster sample study designs are cost effective, however cluster samples violate the simple random sample assumption of independence of observations. Failure to account for the intra-cluster correlation of observations when sampling through clusters may lead to an under-powered study. Researchers therefore need estimates of intra-cluster correlation for a range of outcomes to calculate sample size. We report intra-cluster correlation coefficients observed within a large-scale cross-sectional study of general practice in Australia, where the general practitioner (GP) was the primary sampling unit and the patient encounter was the unit of inference. METHODS: Each year the Bettering the Evaluation and Care of Health (BEACH) study recruits a random sample of approximately 1,000 GPs across Australia. Each GP completes details of 100 consecutive patient encounters. Intra-cluster correlation coefficients were estimated for patient demographics, morbidity managed and treatments received. Intra-cluster correlation coefficients were estimated for descriptive outcomes and for associations between outcomes and predictors and were compared across two independent samples of GPs drawn three years apart. RESULTS: Between April 1999 and March 2000, a random sample of 1,047 Australian general practitioners recorded details of 104,700 patient encounters. Intra-cluster correlation coefficients for patient demographics ranged from 0.055 for patient sex to 0.451 for language spoken at home. Intra-cluster correlations for morbidity variables ranged from 0.005 for the management of eye problems to 0.059 for management of psychological problems. Intra-cluster correlation for the association between two variables was smaller than the descriptive intra-cluster correlation of each variable. When compared with the April 2002 to March 2003 sample (1,008 GPs) the estimated intra-cluster correlation coefficients were found to be consistent across samples. CONCLUSIONS: The demonstrated precision and reliability of the estimated intra-cluster correlations indicate that these coefficients will be useful for calculating sample sizes in future general practice surveys that use the GP as the primary sampling unit.
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ItemNo Preview AvailableDoctors' health-seeking behaviour: a questionnaire survey(AUSTRALASIAN MED PUBL CO LTD, 2003-09-15)OBJECTIVES: To explore doctors' perceptions of the acceptable limits to self-treatment and to identify barriers to doctors seeking appropriate healthcare. DESIGN: Self-completion, postal survey using three hypothetical case vignettes. SETTING AND PARTICIPANTS: 896 Australian doctors randomly selected from the Health Insurance Commission database and stratified by sex, discipline (general practitioner or specialist) and location (urban or rural). Data were collected between May and July 2001. MAIN OUTCOME MEASURES: Doctors' self-reported attitudes on illness behaviour and choice of medical care in response to case vignettes. RESULTS: 358 (40%) doctors returned questionnaires. More participants believed it was acceptable to self-treat acute conditions (315/351; 90%) than to self-treat chronic conditions (88/350; 25%). Nine per cent (30/351) of participants believed it was acceptable to self-prescribe psychotropic medication. A greater proportion of GPs (206/230; 90%) than specialists (101/121; 83%) believed doctors are reluctant to attend another doctor, especially if the problem is psychological. Women and GPs were significantly less likely to report that it was easy to find a satisfactory treating doctor (women, 58/140 [41%]; men, 128/211 [61%]; GPs, 106/231 [46%]; specialists, 80/120 [67%]). Being a specialist was predictive of seeking appropriate healthcare for all three vignettes. CONCLUSION: Doctors have varying opinions regarding the acceptability of self-treating chronic conditions, and perceive considerable barriers to seeking appropriate medical care. Strategies are needed to challenge the culture of self-reliance.
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ItemNo Preview AvailableCase managers' attitudes to the physical health of their patients(BLACKWELL PUBLISHING ASIA, 2003-12)OBJECTIVE: To examine the attitudes and practices of case managers working in Area Mental Health Services (AMHS) towards the physical health of people with chronic mental illness. METHOD: Case managers at four AMHS in Melbourne participated in focus groups and completed a survey questionnaire. RESULTS: Case managers generally believed that mental illness, psychotropic medication and lifestyle factors contributed to the poor physical health status of their patients. Although many case managers attempted interventions aimed at improving physical health, there was inconsistency regarding the areas targeted. Preventive health measures were often neglected. Overall, there was a sense of pessimism around whether improved physical health was possible for people with chronic mental illness. CONCLUSIONS: Lack of coordination among health professionals and the health system may contribute to the poor general health of people with mental illness. Patients often have difficulty accessing general practitioners and the culture within the AMHS can exclude considerations of physical health. Case management should include aspects addressing the physical health issues of AMHS clients.
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ItemNo Preview AvailableStudent attitudes and their academic performance: is there any relationship?(TAYLOR & FRANCIS LTD, 2004-02)This study examined the relationship between students' attitudes to consultation skills, their confidence in performing those skills and their academic results. Final-year medical students completed a questionnaire before and after the year 6 general practice attachment, which teaches holistic, patient-centred clinical management and emphasizes core verbal and non-verbal communication skills. When underlying academic ability was taken into account only pre-attachment attitudes regarding the importance of consultation skills remained significantly correlated with at least one measure of performance. Student confidence in performing a skill was not associated with academic measures of performance. These results show that students perform better on those skills that they value and this may be influenced by underlying motivation to master the skill. In contrast, students' confidence in performing a skill is not related to their assessed performance and using confidence as a performance measure may misrepresent the quality of learning being assessed.
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ItemEffect of lactobacillus in preventing post-antibiotic vulvovaginal candidiasis: a randomised controlled trial(B M J PUBLISHING GROUP, 2004-09-04)OBJECTIVE: To test whether oral or vaginal lactobacillus can prevent vulvovaginitis after antibiotic treatment. DESIGN: Randomised, placebo controlled, double blind, factorial 2x2 trial. SETTING: Fifty general practices and 16 pharmacies in Melbourne, Australia. PARTICIPANTS: Non-pregnant women aged 18-50 years who required a short course of oral antibiotics for a non-gynaecological infection: 278 were enrolled in the study, and results were available for 235. INTERVENTIONS: Lactobacillus preparations taken orally or vaginally, or both, from enrollment until four days after completion of their antibiotic course. MAIN OUTCOME MEASURES: Participants' reports of symptoms of post-antibiotic vulvovaginitis, with microbiological evidence of candidiasis provided by a self obtained vaginal swab. RESULTS: Overall, 55/235 (23% (95% confidence interval 18% to 29%)) women developed post-antibiotic vulvovaginitis. Compared with placebo, the odds ratio for developing post-antibiotic vulvovaginitis with oral lactobacillus was 1.06 (95% confidence interval 0.58 to 1.94) and with vaginal lactobacillus 1.38 (0.75 to 2.54). Compliance with antibiotics and interventions was high. The trial was terminated after the second interim analysis because of lack of effect of the interventions. Given the data at this time, the chances of detecting a significant reduction in vulvovaginitis with oral or vaginal lactobacillus treatment were less than 0.032 and 0.0006 respectively if the trial proceeded to full enrollment. CONCLUSIONS: The use of oral or vaginal forms of lactobacillus to prevent post-antibiotic vulvovaginitis is not supported by these results. Further research on this subject is unlikely to be fruitful, unless new understandings about the pathogenesis of post-antibiotic vulvovaginitis indicate a possible role for lactobacillus.
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ItemGuidelines for assessing postnatal problems: introducing evidence-based guidelines in Australian general practice(OXFORD UNIV PRESS, 2003-08)BACKGROUND: Postnatal morbidity is high, and many GPs lack the confidence and knowledge to deal with common postnatal problems. There is a high consultation rate, but few women disclose common health problems. OBJECTIVE: The aim of the present study was to increase the knowledge and skills of GPs to enable them to identify and manage common health problems experienced by women in the year following childbirth. METHODS: An educational programme [Guidelines for Assessing Postnatal Problems (GAPP)] embedded within a large randomized community intervention trial [Program of Resources, Information and Support for Mothers (PRISM)] with a before/after evaluation was undergone by Australian GPs working in four metropolitan and four rural communities. The programme comprised audit, interactive workshops, role-play and evidence-based guidelines, and was evaluated at baseline and 6 months through written questionnaires and a surgery consultation with a trained simulated patient evaluator. RESULTS: A total of 68 (86%) GPs took part in the full GAPP programme. The odds of a GP improving on the knowledge items ranged from 1.0 to 16, with the greatest change occurring in knowledge about the effectiveness of cognitive behavioural therapy for maternal depression. Of the GPs with an incorrect response at baseline, the percentage demonstrating improved knowledge at follow-up ranged from 22 to 100%. Around half of the GPs demonstrated excellent communication skills at baseline. Of the remaining GPs, more than half demonstrated greatly improved skills to detect common postnatal problems at follow-up. At baseline simulated patient visit, 70% of GPs inquired about sexual problems yet none inquired about the possibility of abuse, whereas at follow-up 94% inquired about sexual problems and 51.5% facilitated the disclosure of physical and emotional abuse. Anonymous feedback on the programme by participating GPs showed that 89% believed the programme positively influenced their actual practice. Interestingly, GPs demonstrated greater knowledge and skills in the simulated setting than on the written questionnaire. CONCLUSIONS: This relatively brief multifaceted educational programme assisted many participants in improving their knowledge and the skills required to improve both physical and emotional health after birth. Despite being experienced clinicians and participating actively in a programme on interviewing skills, half of the GPs did not facilitate disclosure of the underlying sensitive issue (abuse) during the follow-up consultation and could benefit from further in-depth training in effective communication skills.