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"Baxter, Janet"
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Dietary intake and sources of sodium and potassium among Australian schoolchildren: results from the cross-sectional Salt and Other Nutrients in Children (SONIC) study
2017
ObjectivesTo examine sodium and potassium urinary excretion by socioeconomic status (SES), discretionary salt use habits and dietary sources of sodium and potassium in a sample of Australian schoolchildren.DesignCross-sectional study.SettingPrimary schools located in Victoria, Australia.Participants666 of 780 children aged 4–12 years who participated in the Salt and Other Nutrients in Children study returned a complete 24-hour urine collection.Primary and secondary outcome measures24-hour urine collection for the measurement of sodium and potassium excretion and 24-hour dietary recall for the assessment of food sources. Parent and child reported use of discretionary salt. SES defined by parental highest level of education.ResultsParticipants were 9.3 years (95% CI 9.0 to 9.6) of age and 55% were boys. Mean urinary sodium and potassium excretion was 103 (95% CI 99 to 108) mmol/day (salt equivalent 6.1 g/day) and 47 (95% CI 45 to 49) mmol/day, respectively. Mean molar Na:K ratio was 2.4 (95% CI 2.3 to 2.5). 72% of children exceeded the age-specific upper level for sodium intake. After adjustment for age, sex and day of urine collection, children from a low socioeconomic background excreted 10.0 (95% CI 17.8 to 2.1) mmol/day more sodium than those of high socioeconomic background (p=0.04). The major sources of sodium were bread (14.8%), mixed cereal-based dishes (9.9%) and processed meat (8.5%). The major sources of potassium were dairy milk (11.5%), potatoes (7.1%) and fruit/vegetable juice (5.4%). Core foods provided 55.3% of dietary sodium and 75.5% of potassium while discretionary foods provided 44.7% and 24.5%, respectively.ConclusionsFor most children, sodium intake exceeds dietary recommendations and there is some indication that children of lower socioeconomic background have the highest intakes. Children are consuming about two times more sodium than potassium. To improve sodium and potassium intakes in schoolchildren, product reformulation of lower salt core foods combined with strategies that seek to reduce the consumption of discretionary foods are required.
Journal Article
Home parenteral nutrition in Scotland: frequency of monitoring, adequacy of review and consequence for complication rates
by
Baxter, Janet P.
,
St. J. O'Reilly, Denis
,
McKee, Ruth F.
in
Ambulatory Care Facilities
,
Anthropometry
,
Biological and medical sciences
2010
Home parenteral nutrition (HPN) has been a major advance in the management of patients with gastrointestinal failure. It demands regular monitoring to ensure optimal intake, assess treatment response, and minimize complications. The Scottish Home Parenteral Nutrition Managed Clinical Network (MCN) produced a guideline advising three-monthly monitoring of biochemistry, micronutrients, vitamins, weight, and anthropometry. This study assesses the frequency and adequacy of monitoring of these complex patients and investigates any effect of this on complication rate.
All patients receiving HPN funded by the National Health Service in Scotland are known to the MCN via the National Contract for provision of HPN. Data are collected in an
MS Access database; 2006 data is extracted.
There were 141 HPN clinic assessments for 53 patients. Sixteen (30%) were seen every 100 d as recommended by the guideline. Sixty percent of reviews were within 100 d of the previous appointment. Duration of HPN treatment inversely correlated with frequency of review. Bloods were checked at 93% of reviews, weight at 86%, anthropometry at 24%, and vitamins and micronutrients measurement at 62% of clinics. No difference in complication rates was found between those reviewed within the recommended time periods and those reviewed less often.
Less than one-third of patients met the current recommended review frequency. Routine bloods and weight measurements were good, micronutrients less so; anthropometry is poorly monitored. Complication rates were not increased in HPN patients reviewed less often.
Journal Article
Cross-Sectional Study of 24-Hour Urinary Electrolyte Excretion and Associated Health Outcomes in a Convenience Sample of Australian Primary Schoolchildren: The Salt and Other Nutrients in Children (SONIC) Study Protocol
by
Baxter, Janet R
,
Keast, Russell S
,
Rigo, Manuela
in
Blood pressure
,
Cardiovascular disease
,
Cross-sectional studies
2015
Dietary sodium and potassium are involved in the pathogenesis of cardiovascular disease. Data exploring the cardiovascular outcomes associated with these electrolytes within Australian children is sparse. Furthermore, an objective measure of sodium and potassium intake within this group is lacking.
The primary aim of the Salt and Other Nutrient Intakes in Children (\"SONIC\") study was to measure sodium and potassium intakes in a sample of primary schoolchildren located in Victoria, Australia, using 24-hour urine collections. Secondary aims were to identify the dietary sources of sodium and potassium, examine the association between these electrolytes and cardiovascular risk factors, and assess children's taste preferences and saltiness perception of manufactured foods.
A cross-sectional study was conducted in a convenience sample of schoolchildren attending primary schools in Victoria, Australia. Participants completed one 24-hour urine collection, which was analyzed for sodium, potassium, and creatinine. Completeness of collections was assessed using collection time, total volume, and urinary creatinine. One 24-hour dietary recall was completed to assess dietary intake. Other data collected included blood pressure, body weight, height, waist and hip circumference. Children were also presented with high and low sodium variants of food products and asked to discriminate salt level and choose their preferred variant. Parents provided demographic information and information on use of discretionary salt. Descriptive statistics will be used to describe sodium and potassium intakes. Linear and logistic regression models with clustered robust standard errors will be used to assess the association between electrolyte intake and health outcomes (blood pressure and body mass index/BMI z-score and waist circumference) and to assess differences in taste preference and discrimination between high and low sodium foods, and correlations between preference, sodium intake, and covariates.
A total of 780 children across 43 schools participated. The results from this study are expected at the end of 2015.
This study will provide the first objective measure of sodium and potassium intake in Australian schoolchildren and improve our understanding of the relationship of these electrolytes to cardiovascular risk factors. Furthermore, this study will provide insight into child taste preferences and explore related factors. Given the cardiovascular implications of consuming too much sodium and too little potassium, monitoring of these nutrients during childhood is an important public health initiative.
Journal Article
Continuous glucose monitoring in pregnant women with type 1 diabetes (CONCEPTT): a multicentre international randomised controlled trial
by
Novodorsky, Peter
,
Kudirka, Anne
,
Martin, Nicki
in
Adolescent
,
Adult
,
Blood Glucose - analysis
2017
Pregnant women with type 1 diabetes are a high-risk population who are recommended to strive for optimal glucose control, but neonatal outcomes attributed to maternal hyperglycaemia remain suboptimal. Our aim was to examine the effectiveness of continuous glucose monitoring (CGM) on maternal glucose control and obstetric and neonatal health outcomes.
In this multicentre, open-label, randomised controlled trial, we recruited women aged 18–40 years with type 1 diabetes for a minimum of 12 months who were receiving intensive insulin therapy. Participants were pregnant (≤13 weeks and 6 days' gestation) or planning pregnancy from 31 hospitals in Canada, England, Scotland, Spain, Italy, Ireland, and the USA. We ran two trials in parallel for pregnant participants and for participants planning pregnancy. In both trials, participants were randomly assigned to either CGM in addition to capillary glucose monitoring or capillary glucose monitoring alone. Randomisation was stratified by insulin delivery (pump or injections) and baseline glycated haemoglobin (HbA1c). The primary outcome was change in HbA1c from randomisation to 34 weeks' gestation in pregnant women and to 24 weeks or conception in women planning pregnancy, and was assessed in all randomised participants with baseline assessments. Secondary outcomes included obstetric and neonatal health outcomes, assessed with all available data without imputation. This trial is registered with ClinicalTrials.gov, number NCT01788527.
Between March 25, 2013, and March 22, 2016, we randomly assigned 325 women (215 pregnant, 110 planning pregnancy) to capillary glucose monitoring with CGM (108 pregnant and 53 planning pregnancy) or without (107 pregnant and 57 planning pregnancy). We found a small difference in HbA1c in pregnant women using CGM (mean difference −0·19%; 95% CI −0·34 to −0·03; p=0·0207). Pregnant CGM users spent more time in target (68% vs 61%; p=0·0034) and less time hyperglycaemic (27% vs 32%; p=0·0279) than did pregnant control participants, with comparable severe hypoglycaemia episodes (18 CGM and 21 control) and time spent hypoglycaemic (3% vs 4%; p=0·10). Neonatal health outcomes were significantly improved, with lower incidence of large for gestational age (odds ratio 0·51, 95% CI 0·28 to 0·90; p=0·0210), fewer neonatal intensive care admissions lasting more than 24 h (0·48; 0·26 to 0·86; p=0·0157), fewer incidences of neonatal hypoglycaemia (0·45; 0·22 to 0·89; p=0·0250), and 1-day shorter length of hospital stay (p=0·0091). We found no apparent benefit of CGM in women planning pregnancy. Adverse events occurred in 51 (48%) of CGM participants and 43 (40%) of control participants in the pregnancy trial, and in 12 (27%) of CGM participants and 21 (37%) of control participants in the planning pregnancy trial. Serious adverse events occurred in 13 (6%) participants in the pregnancy trial (eight [7%] CGM, five [5%] control) and in three (3%) participants in the planning pregnancy trial (two [4%] CGM and one [2%] control). The most common adverse events were skin reactions occurring in 49 (48%) of 103 CGM participants and eight (8%) of 104 control participants during pregnancy and in 23 (44%) of 52 CGM participants and five (9%) of 57 control participants in the planning pregnancy trial. The most common serious adverse events were gastrointestinal (nausea and vomiting in four participants during pregnancy and three participants planning pregnancy).
Use of CGM during pregnancy in patients with type 1 diabetes is associated with improved neonatal outcomes, which are likely to be attributed to reduced exposure to maternal hyperglycaemia. CGM should be offered to all pregnant women with type 1 diabetes using intensive insulin therapy. This study is the first to indicate potential for improvements in non-glycaemic health outcomes from CGM use.
Juvenile Diabetes Research Foundation, Canadian Clinical Trials Network, and National Institute for Health Research.
Journal Article
A review of the instruments used to assess the quality of life of adult patients with chronic intestinal failure receiving parenteral nutrition at home
by
Baxter, Janet P.
,
McKinlay, Alastair W.
,
Fayers, Peter M.
in
Adult
,
adults
,
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
2005
Home parenteral nutrition is an established method of supporting patients with intestinal failure, but this treatment may be life long and imposes severe restrictions on daily life. Impact on quality of life is an important outcome when considering the management of home parenteral nutrition patients. This paper reviews studies in which the quality of life of patients receiving home parenteral nutrition has been assessed. A systematic search of electronic databases and relevant publications was undertaken to identify generic or treatment-specific questionnaires used with home parenteral nutrition patients. Many of the thirty-four reports discovered were small studies. Nineteen used non-specific generic instruments, eight used non-validated questionnaires, four used a combination of both, and three did not use any formal tool. Few systematic patterns emerged. There are few available data on the quality of life of home parenteral nutrition patients, and there is a need for standardised, scientifically validated, treatment-specific instruments to measure quality of life in this population.
Journal Article
Long-term follow-up of patients on home parenteral nutrition in Europe: implications for intestinal transplantation
2011
BackgroundThe indications for intestinal transplantation (ITx) are still debated. Knowing survival rates and causes of death on home parenteral nutrition (HPN) will improve decisions.MethodsA prospective 5-year study compared 389 non-candidates (no indication, no contraindication) and 156 candidates (indication, no contraindication) for ITx. Indications were: HPN failure (liver failure; multiple episodes of catheter-related venous thrombosis or sepsis; severe dehydration), high-risk underlying disease (intra-abdominal desmoids; congenital mucosal disorders; ultra-short bowel), high morbidity intestinal failure. Causes of death were defined as: HPN-related, underlying disease, or other cause.ResultsThe survival rate was 87% in non-candidates, 73% in candidates with HPN failure, 84% in those with high-risk underlying disease, 100% in those with high morbidity intestinal failure and 54%, in ITx recipients (one non-candidate and 21 candidates) (p<0.001). The primary cause of death on HPN was underlying disease-related in patients with HPN duration ≤2 years, and HPN-related in those on HPN duration >2 years (p=0.006). In candidates, the death HRs were increased in those with desmoids (7.1; 95% CI 2.5 to 20.5; p=0.003) or liver failure (3.4; 95% CI 1.6 to 7.3; p=0.002) compared to non-candidates. In deceased candidates, the indications for ITx were the causes of death in 92% of those with desmoids or liver failure, and in 38% of those with other indications (p=0.041). In candidates with catheter-related complications or ultra-short bowel, the survival rate was 83% in those who remained on HPN and 78% after ITx (p=0.767).ConclusionsHPN is confirmed as the primary treatment for intestinal failure. Desmoids and HPN-related liver failure constitute indications for life-saving ITx. Catheter-related complications and ultra-short bowel might be indications for pre-emptive/rehabilitative ITx. In the early years after commencing HPN a life-saving ITx could be required for some patients at higher risk of death from their underlying disease.
Journal Article
Scottish Home Parenteral Nutrition Managed Clinical Network: coordination and standards
by
Baxter, Janet P.
,
Tait, Jan M.
in
Delivery of Health Care
,
Health Services Accessibility
,
Health Services Accessibility - organization & administration
2002
Home parenteral nutrition is required by patients with intestinal disease such that they are unable to maintain nutritional status or fluid volume without this treatment. A Managed Clinical Network has been established in Scotland. The aims of this multi-professional group are to ensure equity of access and that patients are managed according to nationally-agreed evidence-based procedures and protocols. The Clinical Standards Board for Scotland has provided support in preparing a quality-assurance framework to which the network must adhere.
Journal Article
Monitoring important coastal sites for bottlenose dolphin in Cardigan Bay, UK
2009
From 1994–2007 Ceredigion County Council and a network of shore-based, volunteer observers monitored levels of boat traffic and the occurrence of bottlenose dolphins Tursiops truncatus at seven sites on the coast of Cardigan Bay, Wales. We report high rates of site use and site occupancy by this species during the summer: at Mwnt for example, dolphins were recorded in >80% of 2 hours' observation periods; and at New Quay Harbour dolphins were present in >30% of all 15-minute intervals. At Mwnt and Aberporth there was a significant annual trend for increasing sighting rates; at Ynys Lochtyn a positive trend was only marginally non-significant; at New Quay Bird's Rock the trend was ambiguous but appeared stable over the seven most recent years. Although trends in site use may not reflect population trends in the wider region, these data were consistent with recent abundance estimates that indicate that the number of bottlenose dolphins using Cardigan Bay is stable or slightly increasing. Average group size at our study sites was small (<3 animals), which contrasts with observations of larger schools of the same population elsewhere in their range. The predominant behaviour in coastal Cardigan Bay is demersal foraging, often by solitary animals in shallow near-shore habitats. There was evidence that boat traffic suppressed site use by dolphins at New Quay Harbour, the busiest monitoring site: sighting rates fell when high numbers of boats were present and sighting rates were higher in 2007 than in previous years, when boat use was reduced due to poor weather during the main tourist season. This study demonstrates that networks of volunteer observers can provide a cost-effective, non-invasive means of gathering data on marine mammals for the purposes of coastal zone management.
Journal Article
How teacher training affects the implementation of differentiated instruction at the elementary level
This mixed methodology study investigated the affects teacher training, or professional development, have had on the implementation of differentiated instruction in elementary classrooms. The study was conducted in a Southeastern Georgia school district. Data was collected using surveys and interviews. The surveys contained 20 questions and asked teachers to answer each question using a Likert Scale, which provided the researcher with quantitative data. There were 75 teachers surveyed. The interviews consisted of 15 open-ended questions and were conducted face-to-face with 10 teachers from the district studied, and provided qualitative data. The data showed that overall, teachers in the district had a positive attitude toward differentiated instruction, and its implementation, and were comfortable implementing differentiated instruction in their classrooms. Results of the data also revealed that the majority of elementary teachers who participated in the study reported that they had attended some type of professional development provided by the school district. Overall, teachers in the school district had a clear understanding of what differentiated instruction felt that it was necessary for student success in their classrooms.
Dissertation
Benchmarking home parenteral nutrition in Scotland and New Zealand : disparities revealed
2008
Tracks patients receiving home parenteral nutrition (HPN) as a treatment for severe intestinal failure via HPN registers in Scotland and NZ in 2005, to enable clinical audit for identifying important variations in practice between the two countries. Source: National Library of New Zealand Te Puna Matauranga o Aotearoa, licensed by the Department of Internal Affairs for re-use under the Creative Commons Attribution 3.0 New Zealand Licence.
Journal Article