A new measure to understand the role of science in US Congress: lessons learned from the Legislative Use of Research Survey (LURS).

Background: There is growing interest in and recognition of the need to use scientific evidence to inform policymaking. However, many of the existing studies on the use of research evidence (URE) have been largely qualitative, and the majority of existing quantitative measures are underdeveloped or were tested in regional or context-dependent settings. We are unaware of any quantitative measures of URE with national policymakers in the US. Aims and objectives: Explore how to measure URE quantitatively by validating a measure of congressional staff's attitudes and behaviors regarding URE, the Legislative Use of Research Survey (LURS), and by discussing the lessons learned through administering the survey. Methods: A 68-item survey was administered to 80 congressional staff to measure their reported research use, value of research, interactions with researchers, general information sources, and research information sources. Confirmatory factor analyses were conducted on each of these five scales. We then trimmed the number of items, based on a combination of poor factor loadings and theoretical rationale, and ran the analyses on the trimmed subscales. Findings: We substantially improved our model fits for each scale over the original models and all items had acceptable factor loadings with our trimmed 35-item survey. We also describe the unique set of challenges and lessons learned from surveying congressional staff. Discussion and conclusions: This work contributes to the transdisciplinary field of URE by offering a tool for studying the mechanisms that can bridge research and policy and shedding light into best practices for measuring URE with national policymakers in the US.

A review of stream nutrient criteria development in the United States.

Elevated nutrients and sediments are the main factors contributing to the poor biological condition measured in over 40% of US waters, highlighting the need for criteria that can aid management efforts to protect or restore the quality of US waters. A large amount of literature on nutrient criteria has been generated since the USEPA called for their development in 1998. Our objective was to examine this peer-reviewed literature to evaluate two main approaches for criteria development in lotic ecosystems: percentile rank and bivariate predictive statistical analyses. The 25th percentile approach has been examined broadly across USEPA-aggregate nutrient ecoregions, and we found that USEPA-suggested criteria for these aggregate ecoregions were often more conservative than criteria estimated using more current regionally focused data based on our compiled data set. Furthermore, 25th percentile estimates were often less than 75th percentile estimates based on reference sites, suggesting that 75th percentile estimates were not more conservative than 25th percentile estimates. Predictive approaches have focused on establishing linear and nonlinear relationships between water quality and algae, macroinvertebrate, and fish communities; attributing causation; and determining whether threshold points exist that can aid in nutrient criteria development. Most of the predictive approaches have occurred at the state or watershed level and may not be directly comparable to USEPA aggregate ecoregions. However, percentile method estimates often fell within the confidence interval of biological threshold criteria estimates, suggesting overlap and some consensus between the two main approaches.

Contrasting cellular responses in Schistosoma haematobium infected and exposed individuals from areas of high and low transmission in Zimbabwe.

The study compared cytokine profiles of individuals from two areas with different transmission patterns for Schistosoma haematobium. One area was a high transmission (HT) while the other was a low transmission (LT) area for S. haematobium. Observations on cellular immune responses were made on stimulated peripheral blood mononuclear cells (PBMC), which were collected pre-treatment, then at 12 and 18 months post treatment. Stimulation was with schistosome worm and egg antigens and a mitogen, phaetohaemaglutinin (PHA). Observations were made on PBMC proliferation and the profiles of cytokine produced over a 5-day incubation period. The two distinct areas showed significant differences on both levels of proliferation and cytokine production for all the measured classes (IL-4, IL-5, IL-10 and IFN-gamma). PBMC from individuals from the LT area had high levels of proliferation but low cytokine production to both antigen stimulants while PBMC from individuals from the HT area showed low levels of proliferation but high cytokine production levels. Prior to treatment, individuals not excreting schistosome ova in the HT area had higher levels of proliferation to the stimulants, than the infected individuals. However, after treatment re-infected individuals showed high levels of proliferation. Before treatment, both infected and uninfected groups showed low and similar ratios, respectively, of IL-4:IFN-gamma, IL-5:IFN-gamma and IL-10:IFN-gamma, while IFN-gamma was high in the infected individuals. After treatment the non re-infected had higher levels of IL-4, IL-5 and IL-10, with the infected having high levels of IFN-gamma. Th1-like response dominated during infection with the Th2-like responses dominating post treatment and in uninfected individuals. The results indicated that the cytokine balance determines, in part, susceptibility or resistance to S. haematobium infection.

Double-blind trial of feprazone and phenylbutazone in acute gout.

A double-blind trial was carried out in 24 patients with acute gout to compare the efficacy and tolerance of feprazone, a non-steroidal anti-inflammatory drug, with that of phenylbutazone. Patients received 800 mg of either drug daily for 2 days and then 600 mg daily for up to 8 days. The results of patient assessment showed there was no significant difference between the two groups in time taken either to significant improvement or to final resolution of the gout attack. No side-effects were reported with either drug.

Elucidation of new structures in lignins of CAD- and COMT-deficient plants by NMR.

Studying lignin-biosynthetic-pathway mutants and transgenics provides insights into plant responses to perturbations of the lignification system, and enhances our understanding of normal lignification. When enzymes late in the pathway are downregulated, significant changes in the composition and structure of lignin may result. NMR spectroscopy provides powerful diagnostic tools for elucidating structures in the difficult lignin polymer, hinting at the chemical and biochemical changes that have occurred. COMT (caffeic acid O-methyl transferase) downregulation in poplar results in the incorporation of 5-hydroxyconiferyl alcohol into lignins via typical radical coupling reactions, but post-coupling quinone methide internal trapping reactions produce novel benzodioxane units in the lignin. CAD (cinnamyl alcohol dehydrogenase) downregulation results in the incorporation of the hydroxycinnamyl aldehyde monolignol precursors intimately into the polymer. Sinapyl aldehyde cross-couples 8-O-4 with both guaiacyl and syringyl units in the growing polymer, whereas coniferyl aldehyde cross-couples 8-O-4 only with syringyl units, reflecting simple chemical cross-coupling propensities. The incorporation of hydroxycinnamyl aldehyde and 5-hydroxyconiferyl alcohol monomers indicates that these monolignol intermediates are secreted to the cell wall for lignification. The recognition that novel units can incorporate into lignins portends significantly expanded opportunities for engineering the composition and consequent properties of lignin for improved utilization of valuable plant resources.

Recordings or summaries of consultations for people with cancer.

OBJECTIVES: Many people find it difficult to remember information provided during medical consultations. One way of improving this may be to provide a record of the conversation. This review examined the effects of providing recordings or summaries of their consultations to people with cancer and their families. SEARCH STRATEGY: The following sources were searched: Cochrane Library (to issue 1 of 1999); and MEDLINE; CINAHL; Sociofile; Cancerlit; Dissertation Abstracts; EMBASE; IAC Health & Wellness; JICST; Pascal; ERIC; ASSIA; PsycINFO; Linguistics and Language Behavior Abstracts; Mental Health Abstracts; AMED; CAB Health; DHSS-Data; MANTIS (to mid 1998). SELECTION CRITERIA: Randomised and non-randomised controlled trials that evaluate the effects of providing recordings (e.g. audiotapes) or summaries (e.g. letter with reminders of key points) of consultations to people with cancer or their families. Two reviewers assessed studies for inclusion. DATA COLLECTION AND ANALYSIS: Data were extracted by one reviewer and checked by another reviewer. The quality of studies was assessed on six criteria. MAIN RESULTS: Eight studies satisfied the selection criteria. All involved adult participants. The studies did not all measure similar outcomes. In seven studies, between 83% and 96% of participants found recordings or summaries of their consultations valuable. Four out of six studies reported better recall of information for those receiving recordings or summaries. Two out of four studies found that participants provided with a recording or summary were more satisfied with the information received. No studies (out of six) found any statistically significant effect on anxiety or depression. No study evaluated the effects on survival or quality of life. REVIEWER'S CONCLUSIONS: The provision of recordings or summaries of key consultations may benefit most adults with cancer. Although more research is needed to improve our understanding of these interventions, most patients find them very useful. Practitioners should consider offering people tape recordings or written summaries of their consultations.

Communicating with children and adolescents about their cancer.

BACKGROUND: Communication with children and adolescents with cancer about their disease and treatment and the implications of these is an important aspect of good quality care. It is often poorly performed in practice. Various interventions have been developed that aim to enhance communication involving children or adolescents with cancer. OBJECTIVES: To examine the effects of interventions to enhance communication with children and/or adolescents about their cancer, its treatment and their implications. SEARCH STRATEGY: The following electronic databases were searched: Cochrane Library; Medline; PsycLit; Cinahl; Cancerlit; EMBASE; Sociofile; Health Management Information Consortium; ASSIA; LISA; ERIC; PAIS; Information Science Abstracts; Dissertation Abstracts; JICST; Pascal; Linguistics and Language Behavior Abstracts; Mental Health Abstracts; AMED; MANTIS. Bibliographies of identified studies were also checked and contact made with experts in the field. SELECTION CRITERIA: Randomised and non-randomised controlled trials and before and after studies that evaluated the effects of interventions to enhance communication with children and/or adolescents about their cancer, treatment and related issues. DATA COLLECTION AND ANALYSIS: Data relating to the interventions, populations and outcomes studied and the design and methodological quality of included studies were extracted by one reviewer and checked by another reviewer. A narrative summary of the results is presented. MAIN RESULTS: Six studies met the criteria for inclusion. They were diverse in terms of the interventions evaluated, study designs used, types of people who participated and the outcomes measured. One study of a computer-assisted education programme reported improvements in knowledge and understanding about blood counts and cancer symptoms. Two out of two studies of school reintegration programs reported improvements in some aspects of psychosocial wellbeing (one in anxiety and one in depression), social wellbeing (two in social competence and one in social support) and behavioural problems; and one reported improvements in physical competence. REVIEWER'S CONCLUSIONS: Interventions to enhance communication involving children and adolescents with cancer have not been widely or rigorously assessed. The weak evidence that exists suggests that some children and adolescents with cancer may derive some benefit from specific information-giving programs and from interventions that aim to facilitate their reintegration into school and social activities. More research is needed to investigate the effects of these and other related interventions.

Recordings or summaries of consultations for people with cancer.

BACKGROUND: Many people find it difficult to remember information provided during medical consultations. One way of improving this may be to provide a record of the conversation. OBJECTIVES: This review examined the effects of providing recordings or summaries of their consultations to people with cancer and their families. SEARCH STRATEGY: We searched the following sources: The Cochrane Library (issue 4 2002); MEDLINE (1966 to January week 1 2003); CINAHL (1982 to December week 4 2002); Dissertation Abstracts (1861 to week 2 2003); EMBASE (1985 to week 2 2003); PsycINFO (1967 to January week 2 2003); AMED (1985 to December 2002); and Sociological Abstracts (1998 to week 2 2003). For the initial (1999) publication of this review we also searched the following databases: Sociofile; Cancerlit; IAC Health & Wellness; JICST; Pascal; ERIC; ASSIA; Linguistics and Language Behavior Abstracts; Mental Health Abstracts; CAB Health; DHSS-Data; MANTIS. SELECTION CRITERIA: Randomised and non-randomised controlled trials that evaluate the effects of providing recordings (e.g. audiotapes) or summaries (e.g. letter with reminders of key points) of consultations to people with cancer or their families. Two reviewers assessed studies for inclusion. DATA COLLECTION AND ANALYSIS: Data were extracted by one reviewer and checked by another reviewer. The quality of studies was assessed on six criteria. MAIN RESULTS: Twelve studies satisfied the selection criteria. All involved adult participants. The studies did not all measure similar outcomes. In seven studies, between 83% and 96% of participants found recordings or summaries of their consultations valuable. Five out of nine studies reported better recall of information for those receiving recordings or summaries. Four out of seven studies found that participants provided with a recording or summary were more satisfied with the information received. No studies (out of seven) found any statistically significant effect on anxiety or depression. One study evaluated the effects on quality of life, but found no main effects. No study evaluated the effects on survival. REVIEWER'S CONCLUSIONS: The provision of recordings or summaries of key consultations may benefit most adults with cancer. Although more research is needed to improve our understanding of these interventions, most patients find them very useful. Practitioners should consider offering people tape recordings or written summaries of their consultations

Interventions for improving communication with children and adolescents about their cancer.

BACKGROUND: Communication with children and adolescents with cancer about their disease and treatment and the implications of these is an important aspect of good quality care. It is often poorly performed in practice. Various interventions have been developed that aim to enhance communication involving children or adolescents with cancer. OBJECTIVES: To examine the effects of interventions to enhance communication with children and/or adolescents about their cancer, its treatment and their implications. SEARCH STRATEGY: We searched the following sources: Cochrane Central Register of Controlled Trials (CENTRAL), The Cochrane Library, Issue 1 2003; MEDLINE (1966 to January week 2 2003); EMBASE (1985 to 2003 week 4); CINAHL (1982 to December week 4 2002); Dissertation Abstracts (1861 to January 2003); ERIC (1966 to January 2003); PsycINFO (1985 to January week 4 2003); Sociological Abstracts (1963 to January 2003).For the initial (2001) publication of this review we also searched the following databases: PsycLIT; Cancerlit;; Sociofile; Health Management Information Consortium; ASSIA; LISA; PAIS; Information Science Abstracts; JICST; Pascal; Linguistics and Language Behavior Abstracts; Mental Health Abstracts; AMED; MANTIS. We also searched the bibliographies of studies assessed for inclusion, and contacted experts in the field. SELECTION CRITERIA: Randomised and non-randomised controlled trials and before and after studies that evaluated the effects of interventions to enhance communication with children and/or adolescents about their cancer, treatment and related issues. DATA COLLECTION AND ANALYSIS: Data relating to the interventions, populations and outcomes studied and the design and methodological quality of included studies were extracted by one reviewer and checked by another reviewer. A narrative summary of the results is presented. MAIN RESULTS: Nine studies met the criteria for inclusion. They were diverse in terms of the interventions evaluated, study designs used, types of people who participated and the outcomes measured. One study of a computer-assisted education programme reported improvements in knowledge and understanding about blood counts and cancer symptoms. One study of a CD-ROM about leukemia reported an improvement in children's feelings of control over their health. One study of art therapy as support for children during painful procedures reported an increase in positive, collaborative behaviour. Two out of two studies of school reintegration programs reported improvements in some aspects of psychosocial wellbeing (one in anxiety and one in depression), social wellbeing (two in social competence and one in social support) and behavioural problems; and one reported improvements in physical competence. REVIEWER'S CONCLUSIONS: Interventions to enhance communication involving children and adolescents with cancer have not been widely or rigorously assessed. The weak evidence that exists suggests that some children and adolescents with cancer may derive some benefit from specific information-giving programs and from interventions that aim to facilitate their reintegration into school and social activities. More research is needed to investigate the effects of these and other related interventions.

Interventions for improving communication with children and adolescents about a family member's cancer.

BACKGROUND: A diagnosis of cancer creates multiple problems for affected families, including major changes in living patterns, roles and relationships. It has not been common practice for families and health practitioners to share information with children or adolescents about a family member's cancer, or to allow them to express their feelings about this. In recent years, however, researchers and practitioners have begun to recognise that children and adolescents might appreciate and benefit by being better informed about, and having more opportunity to communicate their responses to, cancer in the family. OBJECTIVES: To examine the effects of different ways of enhancing communication with children and/or adolescents about a family member's cancer and its treatment. SEARCH STRATEGY: We searched the following sources: Cochrane Central Register of Controlled Trials (CENTRAL), The Cochrane Library, Issue 1 2003; MEDLINE (1966 to January week 2 2003); EMBASE (1985 to 2003 week 6); CINAHL (1982 to February Week 1 2003); ERIC (1966 to 23 January 2003); PsycINFO (1985 to February week 1 2003). For the original (1999) version of this review we also searched the following databases: CancerLIT, Health Management Information Consortium, British Nursing Index, IAC Health & Wellness, JICSTE-Plus, Pascal, Linguistics and Language Behavior Abstracts, Mental Health Abstracts, AMED, HUMN, MANTIS and ASSIA. Bibliographies of identified studies were also checked and contact made with experts in the field. SELECTION CRITERIA: Randomised and non-randomised controlled trials, and controlled and uncontrolled before and after studies that evaluated the effects of interventions to enhance communication with children and/or adolescents about a family member's cancer and its treatment. DATA COLLECTION AND ANALYSIS: Data on knowledge and understanding, coping, adjustment and wellbeing were extracted by one reviewer and checked by another reviewer. Study quality was assessed using six criteria. A qualitative synthesis of the results is presented. MAIN RESULTS: Five studies satisfied the selection criteria: one non-randomised controlled before and after study, and four uncontrolled before and after studies. They differed in terms of the interventions evaluated and the outcomes measured. One study of a camping program and two studies of structured group interventions reported improvements in cancer-related knowledge. One out of two structured group intervention studies found significant reductions in psychological and social problems. The camping program study reported significant improvements in siblings' behaviour. One structured group intervention study reported significantly more positive mood states after the intervention. Another structured group intervention study reported significantly lower levels of anxiety after the intervention. REVIEWER'S CONCLUSIONS: Different methods of communicating with children and adolescents about a family member's cancer have not been widely evaluated in controlled trials. There is weak evidence to suggest that some interventions, such as structured group interventions, may lead to improvements in knowledge and understanding, in coping, anxiety, adjustment and wellbeing. More research is needed to investigate the comparative value of these interventions.

The effect of weight loss on plasma and urinary uric acid and lipid levels.

Plasma uric acid levels in 35 obese gouty and non-gouty subjects showed a highly significant mean fall of 0.6 mg/100 ml after weight reduction on a low-calorie diet. Urinary urate also fell by a mean value of 87 mg/100 ml. Serum cholesterol and triglyceride levels have been studied in 20 of the subjects. Both have shown some overall fall with weight loss. So far the degree of change of plasma urate has shown a correlation with that of cholesterol but not that of triglyceride, but further data are needed on these inter-relationships.

Family study of lipid and purine levels in gout patients and analysis of mortality.

A family study was performed to determine whether the hypertriglyceridaemia associated with gout is present in families of gout patients or simply due to their life-style. The study revealed hypertriglyceridaemia in gout patients, reflected by hyperprebetalipoproteinaemia and with reciprocal reduction in the proportion of beta-lipoprotein. These abnormalities were not seen in first-degree relatives. No definite increase in mortality was found from coronary or cerebrovascular disease in male gout patients after presentation to hospital or in their relatives. Families of hyperlipidaemic gout patients did reveal a slight increase in male coronary deaths although the significance of this finding was doubtful since some hypercholesterolaemia was found in these hyperlipidaemic families.

Serum uric acid levels in England and Scotland.

A survey of serum uric acid levels in 766 subjects in England and 337 in Glasgow was carried out. There was no difference in the frequency distribution of uric acid or the mean levels in the two countries. A serum uric acid of 7 mg/100 ml or over was found in 7.2% of the men and 0.4% of the women. The previously described sex difference and association of serum uric acid with weight were confirmed. No association was found with social class. The suggestion of an increase in uric acid levels in the United Kingdom over the past 14 years is discussed.

Multi-centre trial of naproxen and phenylbutazone in acute gout.

Naproxen 750 mg as a single dose followed by 250 mg three times daily has been compared with phenylbutazone 200 mg four times daily for 48 hours followed by 200 mg three times daily for the treatment of acute gout in an open study on 41 patients. The drugs were equally effective with few and relatively mild side effects. Naproxen is a useful alternative agent for the treatment of acute gout.

Crystal deposition in the knee and great toe joints of asymptomatic gout patients.

Crystal deposition in asymptomatic knee and first metatarsophalangeal (MTP) joints has been studied in 31 patients with previously proven gout. All had had clinical gout in their MTP joints but their knee joints had never been the site of acute gout. Knee arthroscopy was performed permitting synovial membrane inspection, photography and biopsy. Crystalline material was seen in 9 knees (28%) and confirmed histologically as monosodium urate (MSU) in 4 (12.5%). Synovial fluid analysis on 26 samples using a polarizing light microscope demonstrated MSU crystals in 4 (12.5%) and calcium pyrophosphate dihydrate (CPPD) in 2 (6%). Fluid aspirated from 27 of the metatarsophalangeal joints revealed MSU crystals in 14 (52%) and no CPPD crystals.

Private dentistry: why we need the facts.

Rumor and speculation abound within the dental profession about practitioners withdrawing from the NHS to deliver more private dentistry. Due to an absence of effective monitoring or research into this issue the real situation is unclear. We decided to find out what proportions of the gross incomes of general dental practitioners in the East Riding Health Authority were generated by private dentistry. We also sought to establish if they perceived any differences between the quality of their private and NHS work. Our findings and the issues raised are considered for general dental practitioners, for people residing in the authority, and for managers and policy makers. We conclude that the effective management of the supply of NHS dentistry should include a method of systematic monitoring of trends in the delivery of private dental services and the impact on the availability of NHS care. Effective measures are also needed to influence the number and location of dentists in health authorities in England and Wales to ensure adequate and equitable access to NHS dentistry.