Getting through Grade 2: Predicting Children’s Early School Achievement in Rural South African Schools

1997 ◽  
Vol 21 (2) ◽  
pp. 331-348 ◽  
Author(s):  
Christine Liddell ◽  
John Lycett ◽  
Gordon Rae

Children in the second-grade classrooms of three rural schools ( n 150) completed a variety of psychometric and curriculum-based tests, and were rated by their teachers and parents on dimensions of their everyday behaviour; demographic data (e.g. socioeconomic status, presence of mother in the home) and biographical information (e.g. gender, age, birth order) were also collected for each child. Some of these data (e.g. child’s age and gender) were more cost-efficient to collect than others (e.g. parent ratings). Measures were evaluated in terms of their salience for constructing a multivariate model that would predict subsequent grade 2 outcome, with the most cost-effective variables being inserted first. In this way, both the cost-efficiency and predictive power of independent variables (IVs) were taken into consideration when attempting to build a predictive model. A model containing three IVs (scores on curriculum-based tests, teacher ratings of children’s attention span, and teacher ratings of helpfulness) ultimately predicted 51% of the variance in grade 2 outcome. These results demonstrate, first, that it is possible to build a relatively strong predictive model of grade 2 outcome, although not based on variables that are cheap and quick to measure. Second, that doing well in grade 2 is not so much a matter of having well-developed, broad-ranging psychometric abilities, but more a matter of mastering elements of the curriculum and behaving in ways that permit adaptation to the requirements of crowded and under-resourced African classrooms.

2010 ◽  
Vol 62 (7) ◽  
pp. 1623-1628
Author(s):  
Åsa Sivard ◽  
Tomas Ericsson ◽  
Nippe Hylander ◽  
Magnus Karlsson ◽  
Mikael Malmaeus

In an environmentally harmonized society the most cost effective measures to reduce the total effluent discharges should be taken into account. Generalised discharge values are presented for organic material and nutrients in this paper. Depending on conditions in the receiving water any of these parameters can be the determining factor for the eutrophication and oxygen demand. These parameters can be generalized into equivalent loads of TOC, nitrogen or phosphorus by recalculation according to the Redfield ratio. The cost for reduction of organic material and nutrients from a pulp and paper mill is calculated as a cost per unit pollutant (cost equivalent). This cost equivalent is compared with alternative costs, expressed in the same way, for reduction of organic material and nutrients in adjacent industries, municipal treatment plants, impact from transportation, farming, air deposits etc. In order to find where the most cost efficient measures for the society should be taken the cost equivalent for the mill is compared with the alternative measures and their equivalent costs.


2020 ◽  
Author(s):  
Chiara Fabbri ◽  
Siegfried Kasper ◽  
Joseph Zohar ◽  
Daniel Souery ◽  
Stuart Montgomery ◽  
...  

AbstractBackgroundPredictors of treatment outcome in major depressive disorder (MDD) could contribute to evidence-based therapeutic choices. This study tested the cost-effectiveness of a pharmacogenetic and clinical predictive model (PGx-CL-R) vs a clinical risk (CL-R) predictive model in guiding the assignment of combined pharmacotherapy and psychotherapy vs pharmacotherapy in MDD.MethodsWe hypothesized that the prescription of combined treatment, a strategy with evidence of increased efficacy vs pharmacotherapy, may be optimized based on the baseline risk of pharmacotherapy resistance, estimated through PGx-CL-R or CL-R predictive models. Both strategies were compared to standard care (ST, pharmacotherapy to all subjects). Treatment effects, costs and utilities (quality adjusted life years, QALYs) were based on the literature and included in a three-years Markov model.ResultsCL-R was cost-effective compared to PGx-CL-R, with ICER (incremental cost effect ratio) of £2341 (CL-R) and £3937 (PGx-CL-R) per QALY compared to ST. PGx-CL-R had similar or better ICER compared to ST only when 1) the cost of genotyping was £100 per subject or less or 2) the sensitivity of the PGx-CL-R test was at least 0.90 and the specificity at least 0.85. CL-R had ICER of £3664 and of £4110 when the CL-R model was tested in two independent samples.Limitationslack of validation in clinical trial.ConclusionsPrediction of pharmacotherapy resistance according to clinical risk might be a cost-effective strategy if confirmed on large samples from the general population. Combined treatment with drugs having a very good tolerability profile could be a cheaper alternative to psychotherapy.


2014 ◽  
Vol 46 (4) ◽  
pp. 509-526 ◽  
Author(s):  
Craig M. Smith ◽  
Jeffrey R. Williams ◽  
Amirpouyan Nejadhashemi ◽  
Sean A. Woznicki ◽  
John C. Leatherman

Erosion of agricultural croplands is a significant contributor of sedimentation to reservoirs. Here, physiographic and economic models for a large agricultural watershed (2377 square miles with 27 subwatersheds) are integrated for the reduction of sedimentation of one Midwestern reservoir. Sediment reduction and the cost-effectiveness of three agricultural best management practices (no-till, filter strip, and permanent vegetation) implementation were considered under three modeling scenarios: random assignment; the globally most cost-effective approach; and a cost-effective targeting approach. This study demonstrates how physiographic and economic data can be harnessed to yield readily comprehendible cost-effective targeting maps. Cost-effective targeting may be preferable to watershed managers for its “user-friendliness” without too great a sacrifice of the globally most cost-efficient solution.


2011 ◽  
Vol 93 (2) ◽  
pp. 114-119 ◽  
Author(s):  
Andrew D Beggs ◽  
Ravinda D Bhate ◽  
Shashi Irukulla ◽  
Mayen Achiek ◽  
A Muti Abulafi

INTRODUCTION The UK has a higher mortality for colon cancer than the European average. The UK Government introduced a 2-week referral target for patients with colorectal symptoms meeting certain criteria and 62-day target for the delivery of treatment from the date of referral for those patients diagnosed with cancer. Hospitals are expected to meet 100% and 95% of these targets, respectively; therefore, an efficient and effective patient pathway is required to deliver diagnosis and treatment within this period. It is suggested that ‘straight-to-test’ will help this process and we have examined our implementation of ‘straight-to-colonoscopy’ as a method of achieving this aim. PATIENTS AND METHODS We carried out a retrospective audit of 317 patients referred under the 2-week rule over a 1-year period between October 2004 and September 2005 and were eligible for ‘straight-to-colonoscopy'. Demographic data, appropriateness of referral and colonoscopy findings were obtained. The cost effectiveness and impact on waiting period were also analysed. RESULTS A total of 317 patients were seen within 2 weeks. Cancer was found in 23 patients and all were treated within 62 days. Forty-four patients were determined by the specialist to have been referred inappropriately because they did not meet NICE referral guidelines. No cancer was found in any of the inappropriate referrals. The use of straight-to-test colonoscopy lead to cost savings of £26,176 (£82.57/patient) in this group compared to standard practice. There was no increase in waiting times. CONCLUSIONS Straight-to-colonoscopy for urgent suspected cancer referrals is a safe, feasible and cost-effective method for delivery of the 62-day target and did not lead to increase in the endoscopy waiting list.


2000 ◽  
Vol 19 (2) ◽  
pp. 247-259 ◽  
Author(s):  
Laura Purdy

Proponents of xenotransplantation hope that it will provide organs to fill the gap between the demand for and supply of organs for transplant. The scientific obstacles to transplanting animal organs into humans are daunting, as are the moral, political, and policy issues. Among them are concerns about animal rights and welfare, patient acceptance and informed consent, and broader public health issues, such as the cost-efficient deployment of scarce resources and the risk of disease in third parties. The latter is, in my view, the most immediately urgent issue. Pigs, the current animal of choice, carry many bacterial and viral pathogens, and it is currently impossible to assess the risk of disease to human populations. Because of this risk, a moratorium on xenotransplantation is necessary to protect public health; it is also questionable whether the technology, if successful, would be the most cost-effective way to promote health.


Author(s):  
P Vasudev ◽  
R Lowe ◽  
C Maxwell-Armstrong

In the current financial climate the NHS faces budget cuts. A good knowledge of the costs of the equipment used in theatres will allow more cost-efficient allocation of resources. The equipment used is dependent on the consultant surgeon leading the operation, with individual surgeons having their own preferences. For the efficient running of a department one would assume that the surgeons would have a working knowledge of the cost of equipment. This study looked at the awareness of surgeons of the cost of disposable equipment. It aimed to highlight the difference between the estimated and actual cost of disposable items, providing feedback to the surgeons so they become more aware of the real cost of their choices in order to help optimise use of equipment. This will hopefully lead to more cost-effective theatres.


Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4093
Author(s):  
Abdullah Lakhan ◽  
Mazin Abed Mohammed ◽  
Ahmed N. Rashid ◽  
Seifedine Kadry ◽  
Thammarat Panityakul ◽  
...  

The Internet of Medical Things (IoMT) is increasingly being used for healthcare purposes. IoMT enables many sensors to collect patient data from various locations and send it to a distributed hospital for further study. IoMT provides patients with a variety of paid programmes to help them keep track of their health problems. However, the current system services are expensive, and offloaded data in the healthcare network are insecure. The research develops a new, cost-effective and stable IoMT framework based on a blockchain-enabled fog cloud. The study aims to reduce the cost of healthcare application services as they are processing in the system. The study devises an IoMT system based on different algorithm techniques, such as Blockchain-Enable Smart-Contract Cost-Efficient Scheduling Algorithm Framework (BECSAF) schemes. Smart-Contract Blockchain schemes ensure data consistency and validation with symmetric cryptography. However, due to the different workflow tasks scheduled on other nodes, the heterogeneous, earliest finish, time-based scheduling deals with execution under their deadlines. Simulation results show that the proposed algorithm schemes outperform all existing baseline approaches in terms of the implementation of applications.


Author(s):  
Q. Krause ◽  
B. McCrory

Augmented Reality (AR) is an emerging technology capable of integrating visual technology with the physical world in novel ways. AR uses may range from education delivery to the operating room. This study sought to evaluate cost-effective AR glasses compared to a traditional computer screen when identifying anatomical structures in a chest radiograph (X-ray). The purpose of this experiment was to determine if the Vuzix Blade AR technology is feasible for use in the medical field to identify anatomical structures. Novice undergraduate and graduate students (n = 14) were recruited to participate in this feasibility study. Radio-graphic images were compiled, and subjects were asked to identify 12 anatomical structures on each image. Images were randomly assigned to identify structures using either the AR glasses or a traditional computer screen for each set. Images were viewed randomly by each subject using a crossover design to compare traditional computer screen vs. AR screen. Subjects identified statistically fewer anatomical structures using the AR glasses compared to using the traditional computer screen (p<0.01). However, the glasses did not require significantly more subjective workload (NASA-TLX) on the user to use compared to the computer screen. When subjects used the cost-effective AR glasses, subjects were unable to differentiate as many anatomical structures as possible (10 vs. 9 structures at p < 0.01), but the glasses were not more demanding overall. Thus, AR glasses may soon be an integral part of the operating room, provided adequate resolution to visualize the necessary details.


2018 ◽  
Vol 15 (2) ◽  
pp. 130-138 ◽  
Author(s):  
Stephen P Juraschek ◽  
Timothy B Plante ◽  
Jeanne Charleston ◽  
Edgar R Miller ◽  
Hsin-Chieh Yeh ◽  
...  

Background/Aims: Despite widespread Internet adoption, online advertising remains an underutilized tool to recruit participants into clinical trials. Whether online advertising is a cost-effective method to enroll participants compared to other traditional forms of recruitment is not known. Methods: Recruitment for the Survivorship Promotion In Reducing IGF-1 Trial, a community-based study of cancer survivors, was conducted from June 2015 through December 2016 via in-person community fairs, advertisements in periodicals, and direct postal mailings. In addition, “Right Column” banner ads were purchased from Facebook to direct participants to the Survivorship Promotion In Reducing IGF-1 Trial website. Response rates, costs of traditional and online advertisements, and demographic data were determined and compared across different online and traditional recruitment strategies. Micro-trials optimizing features of online advertisements were also explored. Results: Of the 406 respondents to our overall outreach efforts, 6% (24 of 406) were referred from online advertising. Facebook advertisements were shown over 3 million times (impressions) to 124,476 people, which resulted in 4401 clicks on our advertisement. Of these, 24 people ultimately contacted study staff, 6 underwent prescreening, and 4 enrolled in the study. The cost of online advertising per enrollee was $794 when targeting a general population versus $1426 when accounting for strategies that specifically targeted African Americans or men. By contrast, community fairs, direct mail, or periodicals cost $917, $799, or $436 per enrollee, respectively. Utilization of micro-trials to assess online ads identified subtleties (e.g. use of an advertisement title) that substantially impacted viewer interest in our trial. Conclusion: Online advertisements effectively directed a relevant population to our website, which resulted in new enrollees in the Survivorship Promotion In Reducing IGF-1 Trial at a cost comparable to traditional methods. Costs were substantially greater with online recruitment when targeting under-represented populations, however. Additional research using online micro-trial tools is needed to evaluate means of more precise recruitment to improve yields in under-represented groups. Potential gains from faster recruitment speed remain to be determined.


Author(s):  
James F. Mancuso

IBM PC compatible computers are widely used in microscopy for applications ranging from control to image acquisition and analysis. The choice of IBM-PC based systems over competing computer platforms can be based on technical merit alone or on a number of factors relating to economics, availability of peripherals, management dictum, or simple personal preference.IBM-PC got a strong “head start” by first dominating clerical, document processing and financial applications. The use of these computers spilled into the laboratory where the DOS based IBM-PC replaced mini-computers. Compared to minicomputer, the PC provided a more for cost-effective platform for applications in numerical analysis, engineering and design, instrument control, image acquisition and image processing. In addition, the sitewide use of a common PC platform could reduce the cost of training and support services relative to cases where many different computer platforms were used. This could be especially true for the microscopists who must use computers in both the laboratory and the office.


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