The association between television viewing and preschool child body mass index : a systematic review of english papers published from 1995 to 2010

This paper is a conceptual and methodological review of the literature on the impact of TV on preschoolers' weight status. A systematic search, of papers published between January 1995 and January 2010, identified twenty-six relevant studies. Fifteen of these were cross-sectional in design and eleven adopted a prospective design; a positive association between hours of TV and child adiposity was found in all but three studies. Although assessed in a limited number of studies, diet may mediate the relationship between TV viewing and BMI. Another likely mediator may be the content of TV programs watched; only three studies examined this association and findings were inconsistent. Our review revealed that research examining mediating effects is limited, focusing more on simple cross-sectional or prospective relationships between TV habits and child body mass index. Further investigation of the mechanisms by which TV viewing affects preschool weight gain is needed.

Body mass index and dental caries in children and adolescents : a systematic review of literature published 2004 to 2011

The objective
The authors undertook an updated systematic review of the relationship between body mass index and dental caries in children and adolescents.
Method
The authors searched Medline, ISI, Cochrane, Scopus, Global Health and CINAHL databases and conducted lateral searches from reference lists for papers published from 2004 to 2011, inclusive. All empirical papers that tested associations between body mass index and dental caries in child and adolescent populations (aged 0 to 18 years) were included.
Results
Dental caries is associated with both high and low body mass index.
Conclusion
A non-linear association between body mass index and dental caries may account for inconsistent findings in previous research. We recommend future research investigate the nature of the association between body mass index and dental caries in samples that include a full range of body mass index scores, and explore how factors such as socioeconomic status mediate the association between body mass index and dental caries.

Selenium content of Australian foods: a review of literature values

The aim of this study was to review the published literature values for the selenium content of Australian foods. A secondary aim was to compare the results for Australian foods with food composition data from international sources to investigate the extent of geographical variation. Published food composition data sources for the selenium content in Australian foods were identified and assessed for data quality using established criteria. The selenium content is available for 148 individual food items. The highest values found are for fish (12.0–63.2 μg/100 g), meats (4.75–37.9 μg/100 g) and eggs (9.00–41.4 μg/100 g), followed by cereals (1.00–20.3 μg/100 g). Moderate levels are seen in dairy products (2.00–7.89 μg/100 g) while most fruits and vegetables have low levels (trace—3.27 μg/100 g). High selenium foods show the greatest level of geographical variation, with foods from the United States generally having higher selenium levels than Australian foods and foods from the United Kingdom and New Zealand having lower levels. This is the first attempt to review the available literature for selenium composition of Australian foods. These data serve as an interim measure for the assessment of selenium intake for use in epidemiological studies of diet–disease relationships.

Multidisciplinary team developed and implemented protocols to assist mechanical ventilation weaning : a systematic review of literature

Aim: The aim of this review was to determine if ventilation-weaning protocols developed and implemented by multidisciplinary teams (MDTs) reduced the duration of mechanical ventilation in adult intensive care patients compared to usual care.

Method: A systematic review was conducted to review published research studies from January 1999 to June 2009 to identify and analyse the best available evidence on MDT-based weaning protocols in adult intensive care patients. All relevant studies based on electronic searches of MEDLINE, EMBASE, CINAHL, the Cochrane Controlled Trials Registry and the Cochrane Database of Systematic Reviews were included. Where possible data were pooled and a meta-analysis performed. A narrative synthesis of data was conducted to provide a critical appraisal of nonrandomised controlled trials included in the review.

Results: Three pre- and postinterventional studies were identified for inclusion in this review. Results show equivocal support for weaning protocols developed and implemented by MDTs for reducing duration of mechanical ventilation.

Conclusion: Communication and organizational processes must be addressed for multidisciplinary protocols to be effective. Due to methodological limitations of included studies, large randomised controlled trials are required to provide high-level evidence of the effects of MDT-based protocols on duration of mechanical ventilation.

'Hidden differences : new meanings in adaptations of literature to the screen'

Approaches to screen adaptation which either accept or reject 'fidelity' effectively hide from view the interrelations of difference that can be observed between literary and visual works of art. Further, comparative reading of a literary precursor and its screen adaptation alone hides from view the interrelations of difference between those and other works. By focussing on difference, screen adaptations can be viewed and read together with literary precursors and other intertextual influences to produce new stories that would otherwise remain hidden. This method of textual analysis, 'differential reading', is explained by reference to three screen adaptations, clustered around themes of unrequited love and rejection, which illustrate general insights into theoretical issues. When viewed and read together, differences can be observed between these works which produce new meanings. When one switches between the possibilities such new meanings create, views of the world embedded in the respective works are destabilised.

Residents' perspectives on urinary incontinence : a review of literature

Background: Individuals in residential aged care facilities experience urinary incontinence more than any other single population. Despite these factors, the impact of the condition on their quality of life, their perspectives of living with the condition, and their preferences for care have received little research attention.

Aim: To provide a descriptive overview of research about; the impact of urinary incontinence on residents’ quality of life; residents’ perspectives of having urinary incontinence; and their preferences for continence care’.

Design: A descriptive review of literature.

Method: A broad search was undertaken for qualitative and quantitative research that evaluated residents’ quality of life related to urinary incontinence; their perspectives on having urinary incontinence, and their preferences for managing it. Data were displayed in tabular format, summarized, and described.

Results: Ten studies were identified and reviewed (six qualitative and four quantitative). They reveal many residents’ value having independent bowel and bladder function, but believe that incontinence in inevitable and intractable. Some adopt self management strategies, however considerable barriers hinder their ability to maintain continence and manage incontinence. Residents often have low expectations, and hence decline further evaluation and treatment. Some express satisfaction with continence care even if this care is not consistent with their preferences. Little is known about how cognitively impaired residents perceive their condition. However some individuals with cognitive impairment respond with acute anxiety when carers’ attempt to provide continence care.

Conclusion: Residents’ perspectives on incontinence and preferences for continence care relate to low expectations for improvement. Such misconceptions should be addressed and residents and their family members should be given a range of options from which to choose. As urinary incontinence impacts on residents’ quality of life, it is also important that continence care is delivered in a participative and sensitive way.

Using molecular level modification to tune the conductivity of graphene papers

Graphene's excellent electrical conductivity benefits from its highly conjugated structure. Therefore, the manipulation of graphene's electronic and mechanical properties should be realized by controlled destruction of its in-sheet conjugation. Here, we r

Offshoring of IT services : survey of literature and research agenda

Although international outsourcing or offshoring of information technology services by advanced industrialised countries from less developed countries is a relatively new phenomenon, a plethora of research exists on the subject. And, given the multidisciplinary nature of the subject, the literature on offshoring is often disparate and subject to confusion. This paper surveys the developments in the empirical literature on offshoring over the 1992-2007 period and identifies potential areas for future research. The main findings are that while the intensity of research on the subject has increased rapidly over a short period of time, research efforts to date have focussed mostly on offshoring decision and offshoring management particularly from the perspective of the offshorer. Future research opportunities exist in the area of offshoring strategy and performance relationship, the behaviour and performance of offshore service providers particularly within the context of firms from less developed countries competing globally, and the nature of competition among offshore service providers both within and among countries.

Improving gambling survey research using dual-frame sampling of landline and mobile phone numbers

Gambling prevalence studies are typically conducted within a single (landline) telephone sampling frame. This practice continues, despite emerging evidence that significant differences exist between landline and mobile (cell) phone only households. This study utilised a dual-frame (landline and mobile) telephone sampling methodology to cast light on the extent of differences across groups of respondents in respect to demographic, health, and gambling characteristics.

A total of 2,014 participants from across Australian states and territories ranging in age from 18 to 96 years participated. Interviews were conducted using computer assisted telephone interviewing technology where 1,012 respondents from the landline sampling frame and 1,002 from the mobile phone sampling frame completed a questionnaire about gambling and other health behaviours. Responses across the landline sampling frame, the mobile phone sampling frame, and the subset of the mobile phone sampling frame that possessed a mobile phone only (MPO) were contrasted.

The findings revealed that although respondents in the landline sample (62.7 %) did not significantly differ from respondents in the mobile phone sample (59.2 %) in gambling participation in the previous 12 months, they were significantly more likely to have gambled in the previous 12 months than the MPO sample (56.4 %). There were no significant differences in internet gambling participation over the previous 12 months in the landline sample (4.7 %), mobile phone sample (4.7 %) and the MPO sample (5.0 %). However, endorsement of lifetime problem gambling on the NODS-CLiP was significantly higher within the mobile sample (10.7 %) and the MPO sample (14.8 %) than the landline sample (6.6 %).

Our research supports previous findings that reliance on a traditional landline telephone sampling approach effectively excludes distinct subgroups of the population from being represented inresearch findings. Consequently, we suggest that research best practice necessitates the use of a dual- rame sampling methodology. Despite inherent logistical and cost issues, this approach  needs to become the norm in gambling survey research.