A population-based health survey in Kon Dieng District, Cambodia.
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Adult↗
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Results for “Service Statistics”
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Patient satisfaction and the use of health services. Explorations in causality.
Little research exists that examines the causal relationship between patient satisfaction and the use of health services. This study of a representative sample of low income families suggests that a relationship does exist. Furthermore, results reported indicate it is bidirectional and reciprocal in nature, and that it is highly related to the provider from which patients seek care. Analysis according to the five major area clinics that were main sources of medical care for an upstate New York community (two HMOs, two hospital-affiliated teaching clinics, and one continuity-of-care clinic) revealed that, in some providers, the association between use and satisfaction is positive, in others negative. Further evidence for a "patient provider" interaction hypothesis was found, suggesting that background characteristics, including health status and race, are related to use and satisfaction in different ways in different clinics. The findings provide evidence for the existence of a causal relationship between use and satisfaction, which is dependent on the context in which medical care is given, and also suggest structural characteristics that might be responsible for these effects. A final conceptual model of satisfaction is offered, permitting reciprocal causation with use and satisfaction with emphasis on patient provider interactions, and this model provides an identification of short- and long-term processes. Progress in this area might require a shift in perspective upward toward structural and systems variables or a shift downward toward "microanalytic" processes, which detail patient-provider interactions.
Consumer Behavior↗
The influence of outreach in the development of the nurse consultant role in critical care: cause or effect?
BACKGROUND: Critical care nurse consultant roles have evolved against a background of service innovation that has resulted in the development of critical care outreach services. Despite compelling evidence that there was a serious problem with the management of critically ill patients in the ward environment, there is little evidence to support outreach as a concept or as a role for nurse consultants. AIMS: The aims for this part of the study were to: METHODS: A national postal survey of all 72 critical care nurse consultants in post in England by August 2003; response rate 72% (n = 52). All data was entered on to a computer anonymously and analysed using SPSS version 11.5. A factor analysis revealed a sub-set of nurse consultants who had a significantly greater involvement in outreach activity. RESULTS: Critical care nurse consultants have a high involvement in the development of care for critically ill patients outside the traditional boundaries of critical care. A sub-set emerged that has a significantly greater involvement in outreach activity. This includes roles such as working with an individual or team to develop their practice (whole group mean involvement score M = 4.45, outreach M = 4.88, p < 0.001); developing education outside the ICU/HDU (whole group M = 4.13, outreach M = 4.88, p < 0.001) and receiving nurse led referrals from the wards (whole group M = 3.92, outreach M = 4.81, p < 0.001). CONCLUSIONS: Given the lack of evidence for outreach, organisations should consider the high level of involvement of the nurse consultant outside the traditional boundaries of the ICU/HDU.
Attitude of Health Personnel↗
[Military medical statistics: the status, problems and outlook].
The reform of medical service of the RF Armed Forces has objectively required the conduction of quite definite changes and military and medical statistics as an applied science, the teaching subject and field of practical activity of medical service. The results obtained during analysis of experience of the Armed Forces personnel medical support for the last years have shown that it is necessary to widen the scope of military and medical statistics applications by military physicians, medical specialists of medical service head-quarters in the form of their informative and statistic activity which is one of the integrated part of medical service in military men. The article presents the main results of military and medical statistics reformation, as well as principal trends of its further improvement.
Data Collection↗
The SF36 as an outcome measure of services for end stage renal failure.
OBJECTIVE: To evaluate the use of the short form 36 (SF36) as a measure of health related quality of life of patients with end stage renal failure, document the results, and investigate factors, including mode of treatment, which may influence it. DESIGN: Cross sectional survey of patients with end stage renal failure, with the standard United Kingdom version of the SF36 supplemented by specific questions for end stage renal failure. SETTING: A teaching hospital renal unit. SUBJECTS AND METHODS: 660 patients treated at the Sheffield Kidney Institute by haemodialysis, peritoneal dialysis, and transplantation. Internal consistency, percentage of maximal or minimal responses, SF36 scores, effect sizes, correlations between independent predictor variables and individual dimension scores of the SF36. Multiple regression analysis of the SF36 scores for the physical functioning, vitality, and mental health dimensions against treatment, age, risk (comorbidity) score, and other independent variables. RESULTS: A high response rate was achieved. Internal consistency was good. There were no floor or ceiling effects other than for the two "role" dimensions. Overall health related quality of life was poor compared with the general population. Having a functioning transplant was a significant predictor of higher score in the three dimensions (physical functioning, vitality, and mental health) for which multiple regression models were constructed. Age, sex, comorbidity, duration of treatment, level of social and emotional support, household numbers, and hospital dialysis were also (variably) significant predictors. CONCLUSIONS: The SF36 is a practical and consistent questionnaire in this context, and there is evidence to support its construct validity. Overall the health related quality of life of these patients is poor, although transplantation is associated with higher scores independently of the effect of age and comorbidity. Age, comorbidity, and sex are also predictive of the scores attained in the three dimensions studied. Further studies are required to ascertain whether altering those predictor variables which are under the influence of professional carers is associated with changes in health related quality of life, and thus confirm the value of this outcome as a measure of quality of care.
Data Collection↗
Likelihood of reporting adverse events in community pharmacy: an experimental study.
BACKGROUND: In the UK the National Reporting and Learning System (NRLS) is designed to coordinate the reporting of patient safety incidents nationally and to improve the ability of the health service to learn from the analysis of these events. Little is known about levels of engagement with the NRLS. OBJECTIVE: To examine the likelihood of community pharmacists and support staff reporting patient safety incidents which occur in community pharmacies. METHODS: Questionnaire survey containing nine incident scenarios. In the scenarios two factors were orthogonally manipulated: the outcome for the patient was reported as good, bad or poor, and the behaviour of the pharmacist was described as either complying with a protocol, not being aware of a protocol (error), or violating a protocol. Respondents were asked to rate whether they would report the incident (1) locally within the pharmacy and (2) nationally to the National Patient Safety Agency (NPSA). RESULTS: 275 questionnaires were returned (79% response rate) from 223 community pharmacists and 52 members of support staff. There were significant main effects for both patient outcome (F(2,520) = 18.19, p<0.001) and behaviour type (F(2,520) = 93.98, p<0.001), indicating that pharmacists and support staff would take into account both the outcome of the behaviour and whether or not it follows a protocol when considering to report an incident within the pharmacy. Likewise, both pharmacists and support staff considered patient outcome (F(2,524) = 12.59, p<0.001) and behaviour type (F(2,524) = 34.82, p<0.001) when considering to report to the NPSA. Both locally and nationally, the likelihood of reporting any incident was low, and judgements on whether to report were more affected by the behaviour of the pharmacist in relation to protocols than the resulting outcome for the patient. CONCLUSIONS: Community pharmacists and their support staff would be unlikely to report adverse incidents if they witnessed them occurring in a community pharmacy. They remain to be convinced that the advantages to them and their patients outweigh the consequences of blame.
Analysis of Variance↗
Systematic review of outpatient services for chronic pain control.
AIM OF REPORT. This report reviews the evidence about the effectiveness of treatments for chronic pain. While treatment of chronic pain is usually seen as an integrated service, this report concentrates on the individual interventions that constitute the service. HOW THE RESEARCH WAS CONDUCTED. Searches of databases and journals identified over 15,000 randomised studies with pain as an outcome, and many more which were not randomised. Over 150 systematic reviews relevant to chronic pain treatment were identified and their quality assessed using a simple scoring system. Systematic reviews conducted for this report were based mainly on randomised trials. The number needed to treat (NNT) was chosen as the output for the report. NNTs of 2-4 indicate effective treatments. Because NNT is treatment-specific it overcomes problems associated with highly variable placebo or control event rates in pain trials. Such variability is predominantly due to the limited numbers of patients in the clinical trials. Dichotomous outcome measures are important in synthesising information from many studies, and in deriving NNTs. Methods have been developed which allow mean information on pain relief and intensity to be converted reliably into the simple dichotomous outcome of at least 50% pain relief. RESEARCH FINDINGS. PHYSICAL INTERVENTIONS. Transcutaneous electrical nerve stimulation (TENS) has been shown not to be effective in postoperative and labour pain. In chronic pain, there is evidence that TENS effectiveness increases slowly, and that large doses need to be used. There is lack of evidence for the effectiveness of TENS in chronic pain. There is a lack of evidence for the effectiveness of relaxation. Intravenous systemic regional blockade with guanethidine has been shown to be without effect. Epidural corticosteroids are effective in the short term for back pain and sciatica. Injections of corticosteroids in or around shoulder joints for shoulder pain have been shown not to be effective. There is a lack of evidence supporting spinal cord stimulators. Case series are of poor quality and do not provide evidence of effectiveness, although at least 50% pain relief at 5 years is reported in over 50% of patients. PHARMACOLOGICAL INTERVENTIONS. Minor analgesics are important in chronic pain. NNTs were calculated for analgesics given orally for moderate or severe acute postoperative pain. The NNTs found ranged from 17 (poor) for codeine, 60 mg, to 2.5 (good) for ibuprofen, 400 mg. Anticonvulsant and antidepressant drugs are prescribed for neuropathic pains like diabetic neuropathy. NNTs are of the order of 2.5, showing them to be effective treatments. However, there are too few studies with too few patients to determine which is the best drug. Minor adverse events are common, and major adverse events occur in about 1 in 20 patients. There are no studies comparing antidepressants and anticonvulsants directly. Systemic local anaesthetic-type drugs have been shown to be effective in nerve injury pain but there is little or no evidence to support their use in migraine or cancer-related pain. Topical NSAIDs (for example, gels, creams) are effective in rheumatological conditions with an overall NNT of 3. There are too few studies to determine which is the best agent. Topical NSAIDs have few adverse events; most importantly they are without the major gastrointestinal adverse events found with oral NSAIDs, which might make them an important choice for some patients with peripheral arthritis. (ABSTRACT TRUNCATED)
Ambulatory Care↗
Determinants of the neonatal mortality.
A recent sharp decline in the neonatal mortality in our medical center prompted a critical analysis of viral statistics of the newborn service during the years 1966 through 1973. The mean neonatal mortality for the entire period was 15.4 per 1,000 live births, and 11.0 in the period 1972 through 1973. The annual neonatal mortalities bore a direct relationship to the annual incidences of infants with birth weights of 1,500 gm or less. The reduction in the proportion of infants in the latter weight group during 1972 through 1973 accounted for three quarters of the improvement in the neonatal mortality as compared to that of the previous years. One quarter of the improvement could be attributable to a decrease in mortality that occurred only in infants in the latter weight group during the same period.
Birth Weight↗
Suicide attempts. A longitudinal view.
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Adult↗
Two-year randomized controlled trial and follow-up of dialectical behavior therapy vs therapy by experts for suicidal behaviors and borderline personality disorder.
CONTEXT: Dialectical behavior therapy (DBT) is a treatment for suicidal behavior and borderline personality disorder with well-documented efficacy. OBJECTIVE: To evaluate the hypothesis that unique aspects of DBT are more efficacious compared with treatment offered by non-behavioral psychotherapy experts. DESIGN: One-year randomized controlled trial, plus 1 year of posttreatment follow-up. SETTING: University outpatient clinic and community practice. PARTICIPANTS: One hundred one clinically referred women with recent suicidal and self-injurious behaviors meeting DSM-IV criteria, matched to condition on age, suicide attempt history, negative prognostic indication, and number of lifetime intentional self-injuries and psychiatric hospitalizations. INTERVENTION: One year of DBT or 1 year of community treatment by experts (developed to maximize internal validity by controlling for therapist sex, availability, expertise, allegiance, training and experience, consultation availability, and institutional prestige). MAIN OUTCOME MEASURES: Trimester assessments of suicidal behaviors, emergency services use, and general psychological functioning. Measures were selected based on previous outcome studies of DBT. Outcome variables were evaluated by blinded assessors. RESULTS: Dialectical behavior therapy was associated with better outcomes in the intent-to-treat analysis than community treatment by experts in most target areas during the 2-year treatment and follow-up period. Subjects receiving DBT were half as likely to make a suicide attempt (hazard ratio, 2.66; P = .005), required less hospitalization for suicide ideation (F(1,92) = 7.3; P = .004), and had lower medical risk (F(1,50) = 3.2; P = .04) across all suicide attempts and self-injurious acts combined. Subjects receiving DBT were less likely to drop out of treatment (hazard ratio, 3.2; P < .001) and had fewer psychiatric hospitalizations (F(1,92) = 6.0; P = .007) and psychiatric emergency department visits (F(1,92) = 2.9; P = .04). CONCLUSIONS: Our findings replicate those of previous studies of DBT and suggest that the effectiveness of DBT cannot reasonably be attributed to general factors associated with expert psychotherapy. Dialectical behavior therapy appears to be uniquely effective in reducing suicide attempts.
Adaptation, Psychological↗
What's the relative risk? A method of correcting the odds ratio in cohort studies of common outcomes.
Logistic regression is used frequently in cohort studies and clinical trials. When the incidence of an outcome of interest is common in the study population (>10%), the adjusted odds ratio derived from the logistic regression can no longer approximate the risk ratio. The more frequent the outcome, the more the odds ratio overestimates the risk ratio when it is more than 1 or underestimates it when it is less than 1. We propose a simple method to approximate a risk ratio from the adjusted odds ratio and derive an estimate of an association or treatment effect that better represents the true relative risk.
Cohort Studies↗
Performance of a general location model with an ignorable missing-data assumption in a multivariate mental health services study.
In a study of the impact of case management teams in a publicly funded mental health programme, mental health patients were interviewed about a variety of outcomes suggestive of successful community adaptation, such as support from family and friends and avoidance of legal problems. Because outcome data were missing for a number of patients, a follow-up study was carried out to obtain this information form previous non-responders whenever possible. Because the data of interest were multivariate and included both continuous and categorical variables, a candidate approach for handling incomplete data in the absence of follow-up data would have been to fit a general location model, presumably with log-linear constraints on cell probabilities to avoid overfitting of the data. Here, we use available follow-up data to investigate the performance of a series of general location models with ignorable non-response. We note some problems with this approach and embed the discussion of this example in a broader consideration of the role of ignorable and non-ignorable models in applied research.
Female↗
Adjusting for bias in C/E ratio estimates.
The estimator used to calculate incremental cost-effectiveness (C/E) ratios from sampled data is biased but consistent. While the bias may be negligible in studies with large sample sizes, it is potentially important in analyses based on small samples. When patient-level data on costs and effects are available, bootstrap simulation methods can be used to estimate the bias of a C/E ratio and adjust the point estimate accordingly.
Bias↗
Statistical inference for cost-effectiveness ratios.
Methods for statistical inference for cost-effectiveness (C/E) ratios for individual treatment and for incremental cost-effectiveness (delta C/ delta E) ratios when two treatments are compared are presented. In a lemma, we relate the relative magnitude of two C/E ratios to the delta C/ delta E ratio. We describe a statistical procedure to test for dominance, or admissibility, that can be used to eliminate an inferior treatment. The one-sided Bonferroni's confidence interval procedure is generalized to the two-sided case. The method requires only that two confidence intervals be available, one for cost and one for effectiveness. We describe Fieller-based confidence intervals and show them to be shorter than Bonferroni intervals. When distribution assumptions hold and variance and covariance estimates are available, Fieller intervals are preferable. However, Bonferroni intervals can be applied in more diverse situations and are easier to calculate. A simple Bonferroni based technique, and a likelihood ratio statistic given by Siegel, Laska and Meisner, for testing the null hypothesis that the C/E ratios of two treatments are equal is presented. The approaches are applied to the data from a phase II clinical trial of a new treatment for sepsis considered previously by others.
Confidence Intervals↗
Substitution of physicians and other providers in outpatient mental health care.
This paper evaluates the extent to which patients may substitute physician and non-physician outpatient mental health services in response to insurance coverage which differs by provider type. Using data from the National Medical Expenditure Survey, a semi-flexible two-stage demand specification is used to estimate substitution elasticities. Our results indicate that insurance coverage significantly affects the choice of provider from whom care is sought and, for individuals who seek care from both provider types, that physician and non-physician services are substitutes. Our elasticity estimates provide a welfare economic argument supporting coverage parity of physician and non-physician mental health services.
Adult↗
The Ward Evaluation Scale: a factor analytic study.
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Attitude to Health↗
Computers in public health.
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Community Health Services↗
A re-examination of the impact of reference pricing on anti-hypertensive drug plan expenditures in British Columbia.
Reference pricing (RP) limits drug plan reimbursement of interchangeable medicines to a reference price, which is typically equal to the price of the lowest-cost interchangeable drug; any cost above that is borne by the patient. Much of the evidence of the effects of RP comes from 'before and after' studies of the RP scheme adopted by Pharmacare, the publicly funded drug plan for seniors and others in British Columbia, Canada. We critically assess the identifying assumption inherent in the before and after design - namely, that pre-RP trends accurately predict counterfactual outcomes - in the context of estimating the impact of RP on Pharmacare's expenditure on anti-hypertensive drugs for its senior beneficiaries. We use similar data from a public plan that has not introduced RP to estimate the effects on drug expenditures of patent expiration, secular changes in prescribing patterns and various other factors common to all Canadian public drug plans that could potentially confound the before and after estimates of the effect of RP on drug plan expenditures. We find that controlling for such factors reduces estimates of drug plan savings attributable to RP of the Calcium Channel Blockers by about half.
Antihypertensive Agents↗