Government advice on peanut avoidance during pregnancy--is it followed correctly and what is the impact on sensitization?

BACKGROUND

In 1998, the UK government issued precautionary advice that pregnant or breast-feeding women with a family history of atopy, may wish to avoid eating peanuts during pregnancy and lactation. This study aimed to assess the compliance with this recommendation and investigate its impact upon peanut sensitization.

METHODS

A total of 858 children born immediately after the advice were followed for 2 years and assessed for peanut sensitization. A standardized questionnaire was used to ascertain history of atopy and maternal exposure to peanuts during pregnancy. Following parental consent children were skin prick tested to assess sensitization to peanuts.

RESULTS

Sixty-five per cent of mothers had avoided peanuts during pregnancy. Forty-two per cent of the mothers had heard about the government advice, and half modified their diet as a consequence. Neither maternal nor family history of atopy had any significant effect on peanut consumption. Parity did play a role, and mothers having their first child were twice as likely to change their diet (P<0.001). Mothers of 77% of the children sensitized to peanuts had avoided peanuts during pregnancy. In this cohort study maternal consumption of peanut during pregnancy was not associated with peanut sensitization in the infant.

CONCLUSIONS

The majority of mothers in this cohort avoided peanut consumption during pregnancy. It is likely that either the government advice is misunderstood by mothers, or that those who communicate the advice have not fully explained who it is targeted at.

Randomized, double-blind comparison of patient-controlled epidural infusion vs nurse-administered epidural infusion for postoperative analgesia in patients undergoing colonic resection

BACKGROUND

There is little published evidence of the analgesic efficacy of patient-controlled epidural analgesia (PCEA) for postoperative pain relief. The aim of this study was to compare the analgesic efficacy of epidural infusion of bupivacaine 0.125% and fentanyl 4 microg ml(-1) administered by either PCEA with a background infusion or nurse-administered continuous epidural infusion (CEI) after major intra-abdominal surgery.

METHODS

In a double-blind, randomized clinical trial, 205 adult patients undergoing colonic resection by laparotomy received either PCEA or CEI. Pain scores were recorded via a four-point verbal rating scale at 1, 2, 3, 4, 8, 12, 24, 48, and 72 h after surgery. The administration of epidural top-ups and systemic analgesia over the same period was also recorded, and patient satisfaction questionnaires completed.

RESULTS

The median area under the curve of pain against time was significantly lower in the PCEA group (2 vs 24, P<0.001) as were median summary pain scores on movement (0.67 vs 1.33, P<0.001). Significantly fewer patients in the PCEA group received one or more epidural top-ups (13 vs 36%, P = 0.0002) or any systemic analgesics (41 vs 63%, P = 0.0021). Patients in the PCEA group were significantly more likely to be very satisfied than in the CEI group (76 vs 43%, P<0.0001).

CONCLUSIONS

PCEA provides greater analgesic efficacy than CEI for postoperative analgesia after major intra-abdominal surgery, and a decreased requirement for physician or nurse intervention.

Eicosapentaenoic acid (EPA, an omega-3 fatty acid from fish oils) for the treatment of cancer cachexia

BACKGROUND

Cancer cachexia is a distressing weight loss syndrome commonly seen in advanced cancer patients. It is associated with reduced quality of life and shorter survival time. Eicosapentaenoic acid (EPA) is a long chain polyunsaturated fatty acid found naturally in some fish which has been used to decrease weight loss, promote weight gain and increase survival times in patients affected with cancer cachexia.

OBJECTIVES

To evaluate the effectiveness and safety of EPA in relieving symptoms associated with the cachexia syndrome in patients with advanced cancer.

SEARCH STRATEGY

Studies were sought through an extensive search of a range of electronic databases. Hand searching was conducted on selected journals and reference lists as well as contact made with investigators, manufacturers and experts. The most recent electronic search was conducted in February 2005.

SELECTION CRITERIA

Studies were included in the review if they assessed oral EPA compared with placebo or control in randomised controlled trials of patients with advanced cancer and either a clinical diagnosis of cachexia or self-reported weight loss of 5% or more.

DATA COLLECTION AND ANALYSIS

Both methodological quality evaluation of potential trials and data extraction were conducted by two independent review authors.

MAIN RESULTS

Five trials (involving 587 patients) met the inclusion criteria. Three trials compared EPA at different doses with placebo with two outcomes, nutritional status and adverse events comparable across two of the three included trials. In addition, two trials compared different doses of EPA with an active matched control. It was possible to compare the outcomes of weight, quality of life and adverse events across these two trials. There were insufficient data to define the optimal dose of EPA.

AUTHORS' CONCLUSIONS

There were insufficient data to establish whether oral EPA was better than placebo. Comparisons of EPA combined with a protein energy supplementation versus a protein energy supplementation (without EPA) in the presence of an appetite stimulant (Megestrol Acetate) provided no evidence that EPA improves symptoms associated with the cachexia syndrome often seen in patients with advanced cancer.

The diagnosis of Brazil nut allergy using history, skin prick tests, serum-specific immunoglobulin E and food challenges

BACKGROUND

Allergy to Brazil nut is a relatively common nut allergy and can be fatal. However, the evidence is lacking regarding the best approach to its diagnosis.

OBJECTIVE

We sought to determine the relative merits of history, skin prick testing, measurement of serum-specific IgE and challenge in the diagnosis of Brazil nut allergy.

METHODS

Fifty-six children and adults with a history of an allergic reaction to Brazil nut or evidence of sensitization were investigated by questionnaire (n=56), skin prick tests (SPTs) (n=53), measurement of serum-specific IgE to Brazil nut (n=54) and double-blind, placebo-controlled labial, and if necessary oral, challenges (n=19).

RESULTS

Brazil nut allergy occurred in highly atopic individuals of any age with a strong family history of atopy. In 24 of 56 (43%), the history of an immediate reaction was sufficient to make a diagnosis with confidence and an oral challenge was considered unsafe. Of the 19 subjects undertaking the 'gold standard' test of a double-blind, placebo-controlled, food challenge, all six subjects with a SPT of at least 6 mm had a positive challenge and all three subjects with a SPT of 0 mm had a negative challenge. In the remaining 10 (53%) subjects, where SPT was between 1 and 5 mm and serum-specific IgE was less than 3.5 kU/L, an oral challenge was performed resulting in three positive and seven negative challenges.

CONCLUSION

A combination of history, SPT and serum-specific IgE was adequate in achieving a diagnosis in the majority (77%) patients with suspected Brazil nut allergy. However, a doubtful history with SPT between 1 and 5 mm, or a serum-specific IgE less than 3.5 kU/L may require an oral challenge to help determine the risk of a Brazil nut allergic reaction.

Reliability and validity of a maternal food frequency questionnaire designed to estimate consumption of common food allergens

BACKGROUND

Maternal food intake during pregnancy may influence the development of food hypersensitivity (FHS) in the child. A food frequency questionnaire estimating the frequency with which some of the mains food allergens are consumed was designed and validated.

MATERIALS AND METHODS

Pregnant women were recruited at the ante-natal clinic of St. Mary's Hospital, Isle of Wight, UK. A food frequency questionnaire was developed and validated by comparing responses to information recorded in 7 days food diaries. The reliability of the food frequency questionnaire was evaluated by asking women to complete the questionnaire on two separate occasions at 30 and 36 weeks gestation.

RESULTS

Fifty-seven women completed the validity study and 91 women completed the reliability study. For both validity and reliability, questions with dichotomous response categories showed the highest level of agreement. Frequency of intake of foods commonly "hidden" in foods produced the lowest validity and reliability scores. In the validity study responses to the food frequency questionnaire identically matched information recorded in the food diaries 80% of the time, on average. In the reliability study, responses were identical on both questionnaires 85% of the time on average.

CONCLUSION

In this study a food frequency questionnaire estimating the frequency with which some of the main food allergens are consumed during pregnancy was designed and validated. This food frequency questionnaire could be used in future studies to assess the role of maternal food intake in the development of FHS in the infant.

Teaching evidence-based practice: A survey of UK's higher education provision

Evidence-based practice (EBP) ensures that clinical health management decisions are based on valid, reliable and relevant evidence determined by sound research and evaluation. It is a key element of both the clinical governance and clinical effectiveness agendas. Clearly, there is a need to provide adequate educational and professional attributes to meet this increasing demand.

The aim of this research was to identify and map all UK postgraduate courses that focus on EBP within health- and social-care services. Electronic searching of internet databases and all UK postgraduate electronic prospectuses using the broad term ‘evidence based’ was undertaken. Course details and prospectuses were obtained and reviewed, where available.

In total, 12 postgraduate courses were identified. These could be broadly categorized into two distinct groups: five courses focused on health-care sciences designed for multidisciplinary health professionals and seven targeted clinical specialities. UK universities therefore provide relatively few courses in EBP. Two models of EBP education appear to be developing, which either specifically target EBP as a separate component of the curriculum or integrate into existing subjects. Further evaluation is needed to determine the relative merits of each.

The effects of a double blind, placebo controlled, artificial food colourings and benzoate preservative challenge on hyperactivity in a general population sample of preschool children

AIMS

To determine whether artificial food colourings and a preservative in the diet of 3 year old children in the general population influence hyperactive behaviour.

METHODS

A sample of 1873 children were screened in their fourth year for the presence of hyperactivity at baseline (HA), of whom 1246 had skin prick tests to identify atopy (AT). Children were selected to form the following groups: HA/AT, not-HA/AT, HA/not-AT, and not-HA/not-AT (n = 277). After baseline assessment, children were subjected to a diet eliminating artificial colourings and benzoate preservatives for one week; in the subsequent three week within subject double blind crossover study they received, in random order, periods of dietary challenge with a drink containing artificial colourings (20 mg daily) and sodium benzoate (45 mg daily) (active period), or a placebo mixture, supplementary to their diet. Behaviour was assessed by a tester blind to dietary status and by parents' ratings.

RESULTS

There were significant reductions in hyperactive behaviour during the withdrawal phase. Furthermore, there were significantly greater increases in hyperactive behaviour during the active than the placebo period based on parental reports. These effects were not influenced by the presence or absence of hyperactivity, nor by the presence or absence of atopy. There were no significant differences detected based on objective testing in the clinic.

CONCLUSIONS

There is a general adverse effect of artificial food colouring and benzoate preservatives on the behaviour of 3 year old children which is detectable by parents but not by a simple clinic assessment. Subgroups are not made more vulnerable to this effect by their prior levels of hyperactivity or by atopy.

Azathioprine as an oral corticosteroid sparing agent for asthma

BACKGROUND

For the majority of chronic asthmatics, symptoms are best controlled by using inhaled steroids. However, for a small group of asthmatics, symptoms can only be controlled by high doses of oral steroids. Continuous use of oral steroid is associated with severe side-effects, but it has been suggested that azathioprine, an immunosuppressive anti-metabolite, often used to reduce the immune response in chronic active hepatitis and severe rheumatoid arthritis, could be useful as an oral steroid sparing agent. There is a need to systematically evaluate the evidence regarding its use to reduce or eliminate oral corticosteroid usage.

OBJECTIVES

The objective of this review is to assess the efficacy of adding azathioprine in patients with stable asthma who are dependent on oral corticosteroids with the intention of eventually minimizing or eliminating the use of these steroids.

SEARCH STRATEGY

Searches of the Cochrane Airways Group asthma and wheeze trials register were undertaken with predefined search terms. Searches were current as of February 2003

SELECTION CRITERIA

Only studies with a randomised placebo-controlled design met the inclusion criteria for the review.

DATA COLLECTION AND ANALYSIS

Two reviewers independently assessed studies for suitability for inclusion in the review. Data were extracted and entered into RevMan 4.2.2.

MAIN RESULTS

Two small trials recruiting 23 participants met the inclusion criteria for the review. Participants may have been suffering from comorbid lung disease. No data on oral steroid consumption were reported. No significant differences were observed in the studies for FEV(1), FVC, PaO(2) and symptoms. One study reported a statistically significant difference in SGaw, but the clinical importance of this is uncertain. Due to concerns over the small sample sizes and methodological shortcomings in terms of inadequate washout in one study, and methods used in outcome assessment for both studies, the findings of the studies are not generalisable to the issue of steroid tapering.

REVIEWER'S CONCLUSIONS

Currently there is a clear lack of evidence to support the use of azathioprine in the treatment of chronic asthma as a steroid sparing-agent. Large, long-term studies with pre-defined steroid reducing protocols are required before recommendations for clinical practice can be made.

Unusual complication of sternotomy: bone fragment induced right ventricular rupture after mitral valve replacement surgery

Major surgical complications following open cardiac procedures via median sternotomy are infrequent but potentially devastating events. We report on a unique, fatal complication of median sternotomy. A 44-year-old woman underwent mitral valve replacement for endocarditis related to intravenous drug abuse. Twenty days after the surgery, she presented to the emergency department in acute distress, and died of cardiac tamponade soon after admission. Postmortem examination revealed a defect in the right ventricular wall caused by a bone fragment resulting from the median sternotomy.

Colchicine as an oral corticosteroid sparing agent for asthma

BACKGROUND

Oral corticosteroids are used as a treatment for asthma, but they are often associated with serious side effects. Colchicine is an anti-inflammatory, immuno modulating agent, which could potentially have a beneficial effect in the treatment of asthma as well as act as a steroid-sparing agent.

OBJECTIVES

To determine the effectiveness of colchicine as an oral corticosteroid sparing agent for in the treatment of chronic asthma.

SEARCH STRATEGY

We searched the Cochrane Airways Group trials register (November 2002), SIGLE (1980 to 2001) and reference lists of potential articles. We also contacted researchers in the field.

SELECTION CRITERIA

Randomised controlled trials investigating the addition of colchicine compared to placebo in stable steroid dependent asthmatics.

DATA COLLECTION AND ANALYSIS

No trials were found that met the inclusion criteria.

MAIN RESULTS

We were unable to perform any meta-analyses. Two small studies have assessed the efficacy of colchicine subsequent to inhaled steroid withdrawal and as a tapering agent in inhaled steroids. Both studies failed to detect a significant difference between colchicine and placebo.

REVIEWER'S CONCLUSIONS

No relevant trials have been published, so there is no evidence to indicate that colchicine is beneficial or otherwise in the management of steroid-dependent asthmatic patients. There is a need for well designed randomised controlled trials to be performed.

Chloroquine as a steroid sparing agent for asthma

BACKGROUND

For the majority of chronic asthmatics, symptoms are best controlled using inhaled steroids, but for a small group of asthma sufferers, symptoms cannot be controlled using inhaled steroids and instead continuous use of high dosage oral steroids (corticosteroids) are required. However, using high dosage oral steroids for long periods is associated with severe side effects. Steroid-sparing treatments have been sought and one of these is chloroquine. Chloroquine is an anti-inflammatory agent, also used in the treatment of malarial infection and as a second-line therapy in the treatment of rheumatoid arthritis, sarcoidosis and systemic lupus erythematosus. All these diseases are associated with immunologic abnormalities hence the speculation that chloroquine might be used to control severe, poorly controlled bronchial asthma. There is a need to systematically evaluate the evidence regarding its use to reduce or eliminate oral corticosteroid use in asthma.

OBJECTIVES

The object of this review was to assess the efficacy of adding chloroquine to oral corticosteroids in patients with chronic asthma who are dependent on oral corticosteroids with the intention of minimising or eventually eliminating the use of these oral steroids.

SEARCH STRATEGY

Searches of the Cochrane Airways Group asthma and wheeze trials register were undertaken with predefined search terms in February 2003.

SELECTION CRITERIA

Only studies with a randomised placebo-controlled design met the inclusion criteria for the review.

DATA COLLECTION AND ANALYSIS

Two reviewers independently assessed studies for suitable in the review. Data were extracted and entered into RevMan 4.2.2

MAIN RESULTS

One small study was included in the review. No significant findings were reported.

REVIEWER'S CONCLUSIONS

There is insufficient evidence to support the use of chloroquine as an oral steroid-sparing agent in chronic asthma. Further trials should optimise oral steroid dosage before addition of the steroid-sparing agent.

Care home versus hospital and own home environments for rehabilitation of older people

BACKGROUND

Rehabilitation for older people has acquired an increasingly important profile for both policy-makers and service providers within health and social care agencies. This growing demand for rehabilitation services has generated an increased interest in the use of alternative care environments, for example care home environments, for older persons' rehabilitation. At a time when there is pressure for policy decision-makers and service providers to explore the use of such care settings for the provision of rehabilitation for older people, there appears limited evidence on which to base decisions.

OBJECTIVES

The objective of this review is to compare the effects of care home environments (e.g. nursing home, residential care home and nursing facilities) versus hospital environments and own home environments in the rehabilitation of older people.

SEARCH STRATEGY

The following databases were searched. The Cochrane Effective Practice and Organisation of Care Specialised Register, the Cochrane Rehabilitation Specialist Register; Cochrane Controlled Trials Register (CCTR); MEDLINE (1966-2000); EMBASE (1980-2000), Cumulative Index to Nursing and Allied Health Literature (CINAHL) (1982-2000): Science Citation Index (1982-2000); Social Science Citation Index (1982-2000); Best Evidence (1991-2000); HMIC (1979-2000); PsycINFO(1967-2000); ASSIA (1987-2000); Ageline (1978-2000); AgeInfo (1971-2000); Sociological Abstracts (1963-2000); System for Information on Grey Literature (SIGLE) (1980-2000); UK National Research Registers Project Database( Issue 1 2001); Architecture Publication Index (1977-2000). The following Journals were hand searched: Disability and Rehabilitation (1992-2000); Disability and Society (1986-2000); Archives of Physical Medicine and Rehabilitation (1985-2000); Journal of the American Geriatric Society (1980-2000); International Journal of Rehabilitation Research (1980-2000); American Journal of Physical Medicine and Rehabilitation (1980-2000) and: Clinical Rehabilitation (1992-2000). The reviewers also consulted subject area experts and obtained full text review articles and forward tracked any references from these sources.

SELECTION CRITERIA

Randomised controlled trials (RCTs), controlled clinical trials (CCTs), controlled before and after studies (CBAs) and interrupted time series (ITS) that compared rehabilitation outcomes for persons 60 years or older who received rehabilitation whilst residing in a care home with those for persons 60 years or older who received rehabilitation in hospital or own home environments. Primary outcomes included functional outcomes using activities of daily living measurement (both personal and instrumental). Secondary outcomes included subjective health status; quality of life measures; return to place of usual residency; all cause mortality; adverse effects; readmission to an acute care facility; patient and carer satisfaction; number of days in facility and number of days receiving rehabilitation.

DATA COLLECTION AND ANALYSIS

One reviewer (DW) completed the initial search and identified potential papers for inclusion. Abstracts for these papers were independently scrutinised by two reviewers (DW/MS) to assess their eligibility. Full text versions of potentially eligible papers were independently assessed by two reviewers (DW/MS). Papers that fulfilled the comparison inclusion criteria were then independently scrutinised by all reviewers to assess whether they met EPOC methodological criteria for inclusion.

MAIN RESULTS

The total yield from the initial search strategy was 19,457. A total of 1,247 abstracts were independently scrutinised by two reviewers (DW/MS) to assess their eligibility. Full text papers for 99 studies were obtained to assess if they fulfilled the review's comparison inclusion criteria. This process resulted in 12 papers being assessed further for methodological validity. However, none of these studies met the inclusion criteria.

REVIEWER'S CONCLUSIONS

There is insufficient evidence to compare the effects of care home environments, hospital environments and own home environments on older persons rehabilitation outcomes. Although the authors acknowledge that absence of effect is not no effect. There are three main reasons; the first is that the description and specification of the environment is often not clear; secondly, the components of the rehabilitation system within the given environments are not adequately specified and; thirdly, when the components are clearly specified they demonstrate that the control and intervention sites are not comparable with respect to the methodological criteria specified by Cochrane EPOC group (Cochrane 1998). The combined effect of these factors resulted in the comparability between intervention and control groups being very weak. For example, there were differences in the services provided in the intervention and control arms, due possibly to differences in dominant remuneration systems, nature of the rehabilitation transformation, patient characteristics, skill mix and academic status of the care environment.

Prevention of sensitization to house dust mite by allergen avoidance in school age children: a randomized controlled study

BACKGROUND

Sensitization to dust mites predisposes to asthma and allergic rhinitis, and prevention of this sensitization might reduce the rising prevalence of these disorders.

OBJECTIVE

To test the effectiveness of dust mite avoidance measures on the development of sensitization to dust mites in children.

METHODS

As part of a multicentre study (Study of Prevention of Allergy in Children of Europe), 242 children, aged 5-7 years, in three European countries (United Kingdom, Greece and Lithuania), were randomized to prophylactic group (n = 127) and control group (n = 115). At randomization these children were required to have a family history of atopy and positive skin test to an aeroallergen but not to house dust mite. Children in the prophylactic group were provided with dust mite impermeable mattress covers and advice on environmental measures to reduce exposure to dust-mite allergen. Control group children were given non-specific advice. After 12 months a standardized questionnaire was completed and skin prick tests were performed.

RESULTS

Ten children in the prophylactic group and 19 in the control group were lost to follow-up. Three of 117 (2.56%) children in the prophylactic group and nine of 96 (9.38%) in the control group developed sensitization to dust mites. Logistic regression analysis confirmed an independent effect of prophylactic measures (adjusted odds ratio (OR): 0.14, 95% confidence interval (CI): 0.03-0.79, P = 0.03). Fifteen children need to be treated to prevent sensitization in one child.

CONCLUSION

Dust mite sensitization can be reduced in school age children with simple mite avoidance measures.

Association of allergy-related symptoms with sensitisation to common allergens in an adult European population

BACKGROUND

Atopy is an important risk factor for asthma and allergic diseases. However, the relationship between atopy and allergic symptoms is not fully understood, and may not be the same for different allergy related symptoms and in differing environmental conditions.

OBJECTIVE

To study the differences in the association of allergy-related symptoms and atopy, in an adult population from five European countries.

METHODS

A prospective, multi-national study was conducted. Centres included Isle of Wight (UK), Vienna (Austria), Freiburg (Germany), Athens (Greece), and Kaunas (Lithuania). We used five questions derived from the ISAAC (International Study of Asthma and Allergy in Children) and other validated questionnaire, to evaluate the presence of allergic symptoms in a selected adult population. Atopy was assessed by SPT or IgE measurement to 3 core allergens (dust mite, cat and grass pollen) in all centres and 1-2 additional allergens relevant to each area (parietaria, olive, birch pollen, tree pollen mix, dog).

RESULTS

Of 3985 subjects, 2478 (62%) responded positively to one or more core ISAAC questions. Sensitisation rate was high in Austria and UK and relatively low in Greece. Dust mite and cat were important allergens for asthma, odds ratio (OR): 2.24, 95% confidence interval (CI): 1.63-3.08 and OR: 2.31, CI: 1.69-3.14, respectively. Grass pollen was strongly associated with hay fever in all centres (OR: 3.62 CI: 2.81-4.66) and with birch pollen in Austria (OR: 3.57, CI: 2.09-6.09) and with parietaria in Greece (4.61 (2.99-7.12). In the comparative analysis, using UK as a reference, Lithuanians had a 10-20-fold reduced risk of asthma and hay fever, but were twice more likely to report chronic itching. The risk of dust mite allergy was 3- and 10-fold lower in Lithuania and Greece, respectively, whereas the risk of cat and grass pollen allergy was one and half times higher in Austria.

CONCLUSION

The risk of allergic symptoms and sensitisation and their association vary widely in different European countries.

Dapsone as an oral corticosteroid sparing agent for asthma

BACKGROUND

Oral corticosteroids are used as a treatment for asthma, however they are often associated with serious side effects. Dapsone is a sulfone with anti-inflammatory properties, therefore it may have a beneficial effect in the treatment of asthma and act as a corticosteroid-sparing agent.

OBJECTIVES

The objective of this review is to assess the safety and efficacy of adding dapsone to oral corticosteroids in adults with stable asthma who are dependent on oral corticosteroids with the intention of eventually minimizing or eliminating the use of these steroids.

SEARCH STRATEGY

The Cochrane Airways group trials register and reference lists of potential articles were searched.

SELECTION CRITERIA

Randomised controlled trials investigating the addition of dapsone compared to placebo in stable corticosteroid dependent asthmatics.

DATA COLLECTION AND ANALYSIS

No trials were found that met the selection criteria.

MAIN RESULTS

No meta-analyses could be performed.

REVIEWER'S CONCLUSIONS

No randomised controlled trials have been published, so there is no reliable evidence to show whether dapsone is beneficial or otherwise in the management of steroid-dependent asthmatic patients. There is a need for well designed randomised controlled trials to be performed. These must be carried out double-blind, since oral corticosteroid reduction requires a judgement on the part of the physician, who may be open to bias if the treatment allocation is known.

Can parents accurately perceive hyperactivity in their child?

In all, 1872 children were recruited as part of a larger study concerning food additives and behaviours in preschool children. This figure represented 70% of the whole population of 3 1/4 -year-old children resident on the Isle of Wight, UK. Parents completed an assessment concerning their perceptions of their child's behaviour. The results of this assessment were compared with scores on two validated parental questionnaires, the Weiss Werry Peters (WWP) hyperactivity scale and the Emotionality, Activity and Sociability Temperament Questionnaire (EAS), which were used to assess hyperactivity. The accuracy of parents in perceiving hyperactivity in their children was found to be around 50% if the child was hyperactive, and 89% if the child was not hyperactive. The implications of these findings for services are discussed. Frequencies of potential risk groups for future Attention Deficit Hyperactivity Disorder (ADHD) and Conduct Disorder were also suggested.

Matrilineal history of the endangered Cape Sable seaside sparrow inferred from mitochondrial DNA polymorphism

Restriction analyses were conducted on mitochondrial DNA (mtDNA) amplified by long-PCR from an endangered bird, the Cape Sable seaside sparrow. The first of several successful mtDNA amplifications was accomplished using the partially digested tissue remains of a transmitter-monitored bird retrieved from the gut of a snake. As many as 91 mtDNA restriction fragments produced by 18 endonucleases were compared in this and four other Cape Sable specimens against mtDNA similarly amplified by long-PCR from other taxonomic forms in the seaside sparrow complex. Results indicate that the Cape Sable birds belong to an 'Atlantic' matrilineal clade, and are highly divergent from other seaside sparrows along the Gulf of Mexico.

Trade-offs between location and waiting times in the provision of health care: the case of elective surgery on the Isle of Wight

BACKGROUND

Recent UK government documents have stated that, within the National Health Service, consumers should be more involved in decision-making. This study considered the technique of discrete choice conjoint analysis (DCCA) for eliciting community views regarding the importance of reducing waiting times. More specifically, the study aimed to establish whether residents living on the Isle of Wight are prepared to travel to the mainland for elective surgery where waiting times are shorter but travel costs may be greater, and, further, if residents are willing to travel, what reduction in waiting time and increase in travel costs would be acceptable.

METHODS

A DCCA questionnaire was sent to a random sample of 1,000 individuals living on the Isle of Wight.

RESULTS

Seventy-eight per cent of respondents were willing to travel to the mainland for elective surgery. Of these, 48 per cent always chose the mainland and 30 per cent traded between island and mainland, depending on the levels of waiting time and travel costs. Whereas 'traders' preferred the Isle of Wight, they would forgo their preferred location if waiting times were reduced by at least 3.9 months, and they were willing to pay over 12 for a 1 month reduction in waiting time. Different combinations of waiting time reductions and travel cost increases that were acceptable to traders were estimated.

CONCLUSIONS

Carrying out elective surgery on the mainland offers the potential to reduce waiting lists for island residents. The majority of respondents would be willing to travel to the mainland. However, one-fifth of respondents were not willing to travel to the mainland for elective surgery. The preferences of this group are important in policy decisions. More generally, the paper demonstrates the potential application of DCCA to public health issues.