scholarly journals Data quality and practical challenges of thyroid volume assessment by ultrasound under field conditions - observer errors may affect prevalence estimates of goitre

2010 ◽  
Vol 9 (1) ◽  
Author(s):  
Sigrun Henjum ◽  
Tor A Strand ◽  
Liv E Torheim ◽  
Arne Oshaug ◽  
Christine L Parr
Keyword(s):  
Data Quality ◽  
Thyroid Volume ◽  
Field Conditions ◽  
Prevalence Estimates ◽  
Volume Assessment

scholarly journals Thyroid volumes in US and Bangladeshi schoolchildren: comparison with European schoolchildren

1999 ◽  
pp. 498-504 ◽  
Author(s):  
F Xu ◽  
K Sullivan ◽  
R Houston ◽  
J Zhao ◽  
W May ◽  
...  
Keyword(s):  
Iodine Deficiency ◽  
Urinary Iodine ◽  
Thyroid Volume ◽  
Residual Effect ◽  
World Health ◽  
Cross Sectional ◽  
Normal Limits ◽  
Prevalence Estimates ◽  
The Us ◽  
Us Children

OBJECTIVE: The World Health Organization (WHO) recently adopted thyroid volume ultrasonography results from European schoolchildren as the international reference for assessing iodine deficiency disorders. Our objective was to describe thyroid volumes measured by ultrasonography in US and Bangladeshi schoolchildren and compare these with European schoolchildren. METHODS: Cross-sectional studies were performed in schoolchildren in the US (n=302) and Bangladesh (n=398). Data were collected on the following: thyroid size by palpation and ultrasonography; urinary iodine; age; sex; weight; and height. RESULTS: Applying the new WHO thyroid volume references to the Bangladeshi children resulted in prevalence estimates of enlarged thyroid of 26% based on body surface area (BSA) and 7% based on age. In contrast, in the US children, the prevalence estimates were less than 1% for each reference. In the US children, the best single predictor of thyroid volume was BSA (R2=0.32), followed by weight (R2=0.31). Using linear regression, upper normal limits (97th percentile) of thyroid volume from US children were calculated for BSA, weight and age, and were found to be lower than the corresponding references based on BSA and age from European schoolchildren. CONCLUSIONS: In areas with malnutrition, such as Bangladesh, the BSA reference should be preferred to the reference based on age. Results from the US children indicated that a thyroid volume reference based on weight alone would perform as well as the one based on BSA. European schoolchildren had larger thyroids than US children, perhaps due to a residual effect of iodine deficiency in the recent past in some areas in Europe.

scholarly journals The impact of improved data quality on the prevalence estimates of anthropometric measures using DHS datasets in India

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Harsh Vivek Harkare ◽  
Daniel J. Corsi ◽  
Rockli Kim ◽  
Sebastian Vollmer ◽  
S. V. Subramanian
Keyword(s):  
Data Quality ◽  
Differential Impact ◽  
Anthropometric Measures ◽  
True Prevalence ◽  
Contentious Issue ◽  
Percentage Points ◽  
Prevalence Estimates ◽  
Quality Checks ◽  
The Impact ◽  
Data Quality Indicators

AbstractThe importance of data quality to correctly determine prevalence estimates of child anthropometric failures has been a contentious issue among policymakers and researchers. Our research objective was to ascertain the impact of improved DHS data quality on the prevalence estimates of stunting, wasting, and underweight. The study also looks for the drivers of data quality. Using five data quality indicators based on age, sex, anthropometric measurements, and normality distribution, we arrive at two datasets of differential data quality and their estimates of anthropometric failures. For this purpose, we use the 2005–2006 and 2015–2016 NFHS data covering 311,182 observations from India. The prevalence estimates of stunting and underweight were virtually unchanged after the application of quality checks. The estimate of wasting had fallen 2 percentage points, indicating an overestimation of the true prevalence. However, this differential impact on the estimate of wasting was driven by the flagging procedure’s sensitivity and was in accordance with empirical evidence from existing literature. We found DHS data quality to be of sufficiently high quality for the prevalence estimates of stunting and underweight, to not change significantly after further improving the data quality. The differential estimate of wasting is attributable to the sensitivity of the flagging procedure.

scholarly journals Procedures Experiments using Photogrammetric Method

2021 ◽  
Vol 1 (8) ◽  
pp. 728-734
Author(s):  
Inne Chaysalina ◽  
Achmad Syarief ◽  
Meirina Triharini
Keyword(s):  
Data Quality ◽  
Qualitative Method ◽  
Field Conditions ◽  
Portable Equipment ◽  
Historical Source ◽  
Easy Method ◽  
Physical Form ◽  
Photogrammetric Method ◽  
3D Documentation ◽  
Sophisticated Technology

Tangible objects are actual objects that can be touched and have a physical form. Therefore, the existence of tangible objects cannot be separated from the potential of damage and even disappearance. At the same time, tangible objects can be an essential source of research and can be a historical source that needs to be preserved. With the development of technology, objects can be recorded in digital forms, 2D Documentation, such as photos and videos, and increasingly sophisticated technology makes object recording developed in 3D Documentation. An easy method with good data quality results is photogrammetric. The implementation of the photogrammetric method has many advantages, some of which are straightforward procedures, portable equipment, and relatively low prices. This study uses a qualitative method based on photogrammetric experiments with various lighting settings and different needs. The results of this research are trying to breakdown of photogrammetric procedures that can applied according to field conditions.

scholarly journals Thyroid Volume Assessment in 3–14 Year-Old Spanish Children from an Iodine-Replete Area

2019 ◽  
Vol 8 (4) ◽  
pp. 196-201 ◽  
Author(s):  
Marta Taida García-Ascaso ◽  
Susana Ares Segura ◽  
Purificación Ros Pérez ◽  
Roi Piñeiro Pérez ◽  
Marta Alfageme Zubillaga
Keyword(s):  
Thyroid Volume ◽  
Old Spanish ◽  
Volume Assessment

The Role of the SLP in Autism Spectrum Disorder Screening and Assessment

2008 ◽  
Vol 15 (2) ◽  
pp. 50-59 ◽  
Author(s):  
Amy Philofsky
Keyword(s):  
Language Development ◽  
Critical Role ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Children With Asd ◽  
Prevalence Estimates ◽  
Notable Increase ◽  
Screening Assessment ◽  
Critical Components

AbstractRecent prevalence estimates for autism have been alarming as a function of the notable increase. Speech-language pathologists play a critical role in screening, assessment and intervention for children with autism. This article reviews signs that may be indicative of autism at different stages of language development, and discusses the importance of several psychometric properties—sensitivity and specificity—in utilizing screening measures for children with autism. Critical components of assessment for children with autism are reviewed. This article concludes with examples of intervention targets for children with ASD at various levels of language development.

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