To assess the value of satellite photographs in resource evaluation on a national scale

The author has identified the following significant results. The limit of resolution on ERTS imagery is normally acknowledged to be about 60 miles although very long features such as roads and railways which are often less than 10 miles long are easily detectable. An example is the north-south road and railway from Lobatse to Francistown. Vegetation growth from winter to summer is readily monitored on false color imagery. The limits of government ranches and special farming areas can be quite accurately ascertained from ERTS imagery. Another aspect to which ERTS imagery lends itself is the location and demarcation of bush fires, many of which were seen on the first imagery which was acquired at the end of the cold, dry season. As a whole, MSS 7 offers maximum reflectance contrast among black and white imagery and is the wavelength used most for interpretation

Identifying studies for systematic reviews - An example from medical imaging

Objectives: To determine if published figures on the proportion of articles included in systematic reviews and identified in electronic databases are applicable to an example from medical imaging. Methods: A systematic review was performed. Additionally, sensitivity and precision of a MEDLINE search were compared with values from three published searches, each customized for a specific field. Results: All articles included in the systematic review were in electronic databases. The MEDLINE search had low precision compared with searches in other fields. Conclusions: in a specific area of medical imaging, electronic databases, including MEDLINE, are reliable sources of articles

Parents’ and carers’ attitudes to the use of digital technology and its role in the care of children with complex needs.

Abstract Introduction: Parent/carers of disabled children want timely and personalized support. Research suggests that technology may address some limitations associated with traditional methods of communication with therapists (e.g. letter, telephone). This exploratory study examined United Kingdom (UK) parents and carers views on the use of digital technology (i.e. computers/phones) in supporting their child and the potential for its greater use in the care of children with complex needs. Methods: An online survey was distributed via special schools and support forums/networks. Questions explored use of and attitudes to digital technology in the care of children with complex needs. Descriptive statistical analyses and content analyses were undertaken on the data. Results: Respondents were 43 parents/carers whose children used rehabilitation services prior to the COVID-19 pandemic. The majority used digital technology frequently to support their child and saw the potential for greater use in rehabilitation services – provided this was not at the expense of in-person therapist contact. Conclusion: Parents and carers held positive views of digital technology as a tool to support their child and enhance rehabilitation services. Recommendations include regular service consultation on parental/child attitudes to digital service delivery and longitudinal studies to assess related health outcomes

Differences between European birthweight standards: impact on classification of ‘small for gestational age’

We describe a quantitative and comparative review of a selection of European birthweight standards for gestational age for singletons, to enable appropriate choices to be made for clinical and research use. Differences between median values at term across standards in 10 regions and misclassification of ‘small for gestational age’ (SGA), were studied. Sex and parity differences, exclusion criteria, and methods of construction were considered. There was wide variation between countries in exclusion criteria, methods of calculating standards, and median birthweight at term. The lightest standards (e.g. France's medians are 255g lower than Norway's medians) were associated with fewer exclusion criteria. Up to 20% of the population used in the construction of the Scottish standard would be classified as SGA using the Norwegian standard. Substantial misclassification of SGA is possible. Assumptions about variation used in the construction of some standards were not justified. It is not possible to conclude that there are real differences in birthweight standards between European countries. Country-based standards control for some population features but add misclassification due to the differing ways in which standards are derived. Standards should be chosen to reflect clinical or research need. If standards stratified by sex or parity are not available, adjustments should be made. In multinational studies, comparisons should be made between results using both a common standard and country-based standards

Costs of publicly provided maternity services in Rosario, Argentina

This material is posted here with permission of the publishers, Instituto Nacional de Salud Pública. Internal or personal use of this material is permitted. However, permission to reprint/republish this material must be obtained from the Publisher.Objective. This study estimates the costs of maternal health services in Rosario, Argentina. Material and Methods. The rovider costs (US$1999) of antenatal care, a normal vaginal delivery and a caesarean section, were evaluated retrospectively in two municipal hospitals. The cost of an antenatal visit was evaluated in two health centres and the patient costs associated with the visit were evaluated in a hospital and a health centre. Results. The average cost per hospital day is$114.62. The average cost of a caesarean section ($525.57) is five times greater than that of a normal vaginal delivery ($105.61). A normal delivery costs less at the general hospital and a c-section less at the aternity hospital. The average cost of an antenatal visit is $31.10. The provider cost is lower at the health centre than at the hospital. Personnel accounted for 72-94$4.70. Direct costs are minimal compared to indirect costs of travel and waiting time. Conclusions. These results suggest the potential for increasing the efficiency of resource use by promoting antenatal care visits at the primary level. Women could also benefit from reduced travel and waiting time. Similar benefits could accrue to the provider by encouraging normal delivery at general hospitals, and complicated deliveries at specialised maternity hospitals.Josephine Borghi is funded by the Department for International Development through the Maternal Health Programme at the London School of Hygiene and Tropical Medicine. This project was conducted for and funded by the Human Reproduction Programme at WHO, Geneva

Women's Current Pension Arrangements: Information from the General Household Survey

This report provides information on the current pension arrangements for women in different martial circumstances of different ages, and with and without children. It is based on a secondary analysis of the General Household Survey (GHS) 1990,1991 and 1992

Attentional load and sensory competition in human vision: Modulation of fMRI responses by load fixation during task-irrelevant stimulation in the peripheral visual field.

Perceptual suppression of distractors may depend on both endogenous and exogenous factors, such as attentional load of the current task and sensory competition among simultaneous stimuli, respectively. We used functional magnetic resonance imaging (fMRI) to compare these two types of attentional effects and examine how they may interact in the human brain. We varied the attentional load of a visual monitoring task performed on a rapid stream at central fixation without altering the central stimuli themselves, while measuring the impact on fMRI responses to task-irrelevant peripheral checkerboards presented either unilaterally or bilaterally. Activations in visual cortex for irrelevant peripheral stimulation decreased with increasing attentional load at fixation. This relative decrease was present even in V1, but became larger for successive visual areas through to V4. Decreases in activation for contralateral peripheral checkerboards due to higher central load were more pronounced within retinotopic cortex corresponding to 'inner' peripheral locations relatively near the central targets than for more eccentric 'outer' locations, demonstrating a predominant suppression of nearby surround rather than strict 'tunnel vision' during higher task load at central fixation. Contralateral activations for peripheral stimulation in one hemifield were reduced by competition with concurrent stimulation in the other hemifield only in inferior parietal cortex, not in retinotopic areas of occipital visual cortex. In addition, central attentional load interacted with competition due to bilateral versus unilateral peripheral stimuli specifically in posterior parietal and fusiform regions. These results reveal that task-dependent attentional load, and interhemifield stimulus-competition, can produce distinct influences on the neural responses to peripheral visual stimuli within the human visual system. These distinct mechanisms in selective visual processing may be integrated within posterior parietal areas, rather than earlier occipital cortex

Happiness as stable extraversion : internal consistency reliability and construct validity of the Oxford Happiness Questionnaire among undergraduate students

The Oxford Happiness Questionnaire (OHQ) was developed by Hills and Argyle (2002) to provide a more accessible equivalent measure of the Oxford Happiness Inventory (OHI). The aim of the present study was to examine the internal consistency reliability, and construct validity of this new instrument alongside the Eysenckian dimensional model of personality. The Oxford Happiness Questionnaire was completed by a sample of 131 undergraduate students together with the abbreviated form of the Revised Eysenck Personality Questionnaire. The data demonstrated good internal consistency reliability (alpha = .92) and good construct validity in terms of positive association with extraversion (r = .38 p < .001) and negative association with neuroticism (r = −.57 p < .001). The kind of happiness measured by the OHQ is clearly associated with stable extraversion

Customer views on service delivery in the Child Support Agency

This research was commissioned to investigate further a range of issues identified in the last CSA national client survey carried out in 1995. It is a qualitative study involving in-depth interviews with parents with care and absent parents. The research aimed to identify client satisfaction and dissatisfaction arising specifically from operational or staff activities. The main findings are: Absent parents and parents with care accepted the principle of dual responsibility. Parents with care valued the recognition of the father's responsibilities and regular payments of maintenance. Although absent parents tended to agree with the Agency's aims, some thought they had been incorrectly implemented. The Agency was seen as pursuing 'soft targets' and thought to be ineffective in obtaining maintenance from absent parents who refused to comply. Overall people were left with an impression of an impersonal system consisting of forms, letters and, increasingly, telephone calls. The Agency was seen as lacking even handedness in ensuring that all absent parents paid maintenance. Many parents were dissatisfied with their assessment as they felt it was too high and therefore inaccurate. None of the parents were able to explain fully how their assessment had been calculated and many wanted to know the details of the formula used. There were mixed views on the forms used in the assessment, some found them easy to complete, while for others it was more difficult, but few had tried to use the help notes provided. There was some objection to having to provide information on partners income and the failure to ask about debt. Contact with the Agency was a source of dissatisfaction. Some parents disliked the tone of letters from the CSA, and many complained about delays and not being kept informed of progress. Very few parents in the study had had face-to-face contact with the CSA, but many said it would be their preferred method of contact. Although there were no cases of the absent parent giving up work as a result of involvement with the CSA, some reported no longer working overtime or looking for promotion, as they believed any extra income would go in maintenance payments. For parents with care there was a greater incentive to take employment when maintenance replaced Income Support, but if it was not regularly received, they had to live on a reduced amount of benefit