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Validity and reliability

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https://www.readbyqxmd.com/read/28107611/adaptation-and-validation-of-the-singing-voice-handicap-index-into-polish
#1
Ewelina M Sielska-Badurek, Maria Sobol, Anna Cioch, Ewa Osuch-Wójcikiewicz, Anna M Rzepakowska, Kazimierz Niemczyk
OBJECTIVE: To translate and adapt the original SVHI for the Polish population and to evaluate the psychometric properties of the Polish SVHI version, such as internal consistency, reliability and construct validity in different groups of dysphonic singers. STUDY DESIGN: Prospective case-control study. SETTING: Patients treated at a single institute. PARTICIPANTS: 60 singers with voice disorders and 57 healthy singers completed the Singing Voice Handicap Index (SVHI) and the Voice Handicap Index (VHI)...
January 20, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28107575/spanish-version-of-actinic-keratosis-quality-of-life-questionnaire-akqol
#2
I Alarcon, G R Vinding, K B Christensen, S Esmann, J Malvehy, S Puig, G B E Jemec
BACKGROUND: Patient Reported Outcome Measures are very important outcomes. For specific diseases Health Related Quality of Life-instruments (HRQoL) are increasingly used to provide data on patients' overall perceptions of the course of a given disease. Actinic keratoses (AKs) are common keratotic lesions that occur on chronically sunlight-exposed skin. Only few studies regarding HRQoL in AKs have been made. OBJECTIVE: In order to be able to compare HRQoL among different countries and cultures we aimed to translate and validate the Actinic Keratosis Quality of Life (AKQoL) questionnaire into Spanish and quantify the impairment caused by AKs in Spanish patients...
January 20, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28107543/quantification-of-pulmonary-fibrosis-in-a-bleomycin-mouse-model-using-automated-histological-image-analysis
#3
Jean-Claude Gilhodes, Yvon Julé, Sebastian Kreuz, Birgit Stierstorfer, Detlef Stiller, Lutz Wollin
Current literature on pulmonary fibrosis induced in animal models highlights the need of an accurate, reliable and reproducible histological quantitative analysis. One of the major limits of histological scoring concerns the fact that it is observer-dependent and consequently subject to variability, which may preclude comparative studies between different laboratories. To achieve a reliable and observer-independent quantification of lung fibrosis we developed an automated software histological image analysis performed from digital image of entire lung sections...
2017: PloS One
https://www.readbyqxmd.com/read/28107217/reliability-and-validity-of-athletes-disability-index-questionnaire
#4
Pardis Noormohammadpour, Alireza Hosseini Khezri, Farzin Farahbakhsh, Mohammad Ali Mansournia, Matthew Smuck, Ramin Kordi
OBJECTIVE: The purpose of this study was to evaluate validity and reliability of a new proposed questionnaire for assessment of functional disability in athletes with low back pain (LBP). DESIGN: Validity and reliability study. SETTING: Elite athletes participating in different fields of sports. PARTICIPANTS: Participants were 165 male and female athletes (between 12 and 50 years old) with LBP. INTERVENTIONS: Athlete Disability Index (ADI) Questionnaire which is developed by the authors for assessing LBP-related disability in athletes, Oswestry Disability Index (ODI), and the Roland-Morris Disability Questionnaire (RDQ)...
January 17, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28107131/an-overview-of-the-peer-assessment-rating-par-index-for-primary-dental-care-practitioners
#5
James Ij Green
The Peer Assessment Rating (PAR) index is a valid and reliable measure of orthodontic treatment outcome and is the most widely accepted such index. Assessing outcomes with the PAR index requires the examination of pre-treatment and post-treatment orthodontic study models. Beginning with the pre-treatment models, a score is given to each feature that deviates from an ideal occlusion (all anatomical contact points adjacent, good interdigitation between posterior teeth and non-excessive overjet/overbite), the scores are then added together to give a total that represents the severity of the malocclusion...
November 1, 2016: Primary Dental Journal
https://www.readbyqxmd.com/read/28106843/underwater-electromagnetic-sensor-networks-part-i-link-characterization
#6
Gara Quintana-Díaz, Pablo Mena-Rodríguez, Iván Pérez-Álvarez, Eugenio Jiménez, Blas-Pablo Dorta-Naranjo, Santiago Zazo, Marina Pérez, Eduardo Quevedo, Laura Cardona, J Joaquín Hernández
Underwater Wireless Sensor Networks (UWSNs) using electromagnetic (EM) technology in marine shallow waters are examined, not just for environmental monitoring but for further interesting applications. Particularly, the use of EM waves is reconsidered in shallow waters due to the benefits offered in this context, where acoustic and optical technologies have serious disadvantages. Sea water scenario is a harsh environment for radiocommunications, and there is no standard model for the underwater EM channel. The high conductivity of sea water, the effect of seabed and the surface make the behaviour of the channel hard to predict...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28106767/development-and-evaluation-of-e-ca-an-electronic-mobile-based-food-record
#7
Sophie Bucher Della Torre, Isabelle Carrard, Eddy Farina, Brigitta Danuser, Maaike Kruseman
Measures that capture diet as validly and reliably as possible are cornerstones of nutritional research, and mobile-based devices offer new opportunities to improve and simplify data collection. The balance between precision and acceptability of these data collection tools remains debated, and rigorous validations are warranted. Our objective was to develop and evaluate an electronic mobile-based food record for a research setting. We developed e-CA, which includes almost 900 foods and beverages classified in 14 categories and 60 subcategories...
January 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28106612/the-brief-early-childhood-screening-assessment-preliminary-validity-in-pediatric-primary-care
#8
Elise M Fallucco, Tim Wysocki, Lauren James, Chelsea Kozikowski, Andre Williams, Mary M Gleason
OBJECTIVE: Brief, well-validated instruments are needed to facilitate screening for early childhood behavioral and emotional problems (BEPs). The objectives of this study were to empirically reduce the length of the Early Childhood Screening Assessment (ECSA) and to assess the validity and reliability of this shorter tool. METHODS: Using caregiver ECSA responses for 2467 children aged 36 to 60 months seen in primary care, individual ECSA items were ranked on a scale ranging from "absolutely retain" to "absolutely delete...
January 17, 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28106558/validation-of-suspected-somatic-single-nucleotide-variations-in-the-brain-of-alzheimer-s-disease-patients
#9
Alberto Gomez-Ramos, Angel J Picher, Esther García, Patricia Garrido, Felix Hernandez, Eduardo Soriano, Jesús Avila
Next-generation sequencing techniques and genome-wide association study analyses have provided a huge amount of data, thereby enabling the identification of DNA variations and mutations related to disease pathogenesis. New techniques and software tools have been developed to improve the accuracy and reliability of this identification. Most of these tools have been designed to discover and validate single nucleotide variants (SNVs). However, in addition to germ-line mutations, human tissues bear genomic mosaicism, which implies that somatic events are present only in low percentages of cells within a given tissue, thereby hindering the validation of these variations using standard genetic tools...
January 19, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28106476/quantification-of-hepcidin-25-in-human-cerebrospinal-fluid-using-lc-ms-ms
#10
Constance Delaby, Pauline Bros, Jérôme Vialaret, Amandine Moulinier, Vincent Delatour, Audrey Gabelle, Sylvain Lehmann, Christophe Hirtz
AIM: Hepcidin, the main iron metabolism regulator, can be detected in various biological fluids. Here, we describe a quantitative method of LC-MS/MS to quantify the 25 amino acid isoform of hepcidin (hepcidin-25) in human cerebrospinal fluid (CSF). Results & methodology: Samples were prepared through protein precipitation followed by solid phase extraction (SPE) and injected into a triple-quadrupole mass spectrometer. Validation of our method included determination of LOQ (0.1 ng/ml), repeatability, intermediate precision, recovery and linearity (up to 25 ng/ml)...
January 20, 2017: Bioanalysis
https://www.readbyqxmd.com/read/28106147/prediction-of-very-late-arrhythmia-recurrence-after-radiofrequency-catheter-ablation-of-atrial-fibrillation-the-mb-later-clinical-score
#11
Nebojša Mujović, Milan Marinković, Nebojša Marković, Alena Shantsila, Gregory Y H Lip, Tatjana S Potpara
Reliable prediction of very late recurrence of atrial fibrillation (VLRAF) occuring >12 months after catheter ablation (CA) in apparently "cured" patients could optimize long-term follow-up and modify decision-making regarding the discontinuation of oral anticoagulant therapy. In a single-centre cohort of consecutive patients post radiofrequency AFCA, we retrospectively derived a novel score for VLRAF prediction. Of 133 consecutive post AFCA patients (mean age 56.9 ± 11.8 years, 63.9% male, 69.2% with paroxysmal AF) who were arrhythmia-free at 12 months (excluding 3-month "blanking period"), 20 patients expirienced a VLRAF during a 29...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105972/comparative-validation-of-the-determination-of-sofosbuvir-in-pharmaceuticals-by-several-inexpensive-ecofriendly-chromatographic-electrophoretic-and-spectrophotometric-methods
#12
Amira F El-Yazbi
Sofosbuvir (SOFO) was approved by the U.S. Food and Drug Administration in 2013 for the treatment of hepatitis C virusinfection with enhanced antiviral potency compared with earlier analogs. Notwithstanding, all current editions of the pharmacopeias still do not present any analytical methods for the quantification of SOFO. Thus, rapid, simple, and ecofriendly methods for the routine analysis of commercial formulations of SOFO are desirable. In this study, five accurate methods for the determination of SOFO in pharmaceutical tablets were developed and validated...
January 20, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28105858/hplc-ms-ms-method-for-dexmedetomidine-quantification-with-design-of-experiments-approach-application-to-pediatric-pharmacokinetic-study
#13
Oliwia Szerkus, Wiktoria Struck-Lewicka, Marta Kordalewska, Ewa Bartosińska, Renata Bujak, Agnieszka Borsuk, Agnieszk Bienert, Alicja Bartkowska-Śniatkowska, Justyna Warzybok, Paweł Wiczling, Antoni Nasal, Roman Kaliszan, Mchał Jan Markuszewski, Danuta Siluk
AIM: The purpose of this work was to develop and validate a rapid and robust LC-MS/MS method for the determination of dexmedetomidine (DEX) in plasma, suitable for analysis of a large number of samples. METHOD: Systematic approach, Design of Experiments, was applied to optimize ESI source parameters and to evaluate method robustness, therefore, a rapid, stable and cost-effective assay was developed. The method was validated according to US FDA guidelines. LLOQ was determined at 5 pg/ml...
January 20, 2017: Bioanalysis
https://www.readbyqxmd.com/read/28105548/brief-report-the-preliminary-psychometric-properties-of-the-social-communication-checklist
#14
Allison L Wainer, Natalie I Berger, Brooke R Ingersoll
Despite the expansion of early intervention approaches for young children with ASD, investigators have struggled to identify measures capable of assessing social communication change in response to these interventions. Addressing recent calls for efficient, sensitive, and reliable social communication measures, the current paper outlines the refinement and validation of the Social Communication Checklist (SCC). We discuss two small studies exploring the psychometric properties of the SCC and the SCC-R (revised Social Communication Checklist), including sensitivity to change, inter-rater reliability, and test-retest reliability, in two samples of children with ASD and one sample of typically-developing children...
January 19, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/28104999/development-of-a-scale-assessing-beliefs-about-thirdhand-smoke-baths
#15
Regine Haardörfer, Carla J Berg, Cam Escoffery, Łucja T Bundy, Melbourne Hovell, Michelle C Kegler
BACKGROUND: Similarly to secondhand smoke (SHS), thirdhand smoke (THS) beliefs may be correlated with smoking behaviors and smokefree policies in the home. Thus, there is a need to develop and validate measures to assess beliefs about THS. METHODS: A list of 19 items related to THS were generated by an expert panel and tested in a pilot study. Based on results from an exploratory factor analysis, two factors emerged: THS persistence in the environment and THS impact on health...
2017: Tobacco Induced Diseases
https://www.readbyqxmd.com/read/28104991/prevalence-of-hepatitis-c-virus-infection-among-hemodialysis-patients-in-the-middle-east-a-systematic-review-and-meta-analysis
#16
Soheil Ashkani-Esfahani, Seyed Moayed Alavian, Mohammad Salehi-Marzijarani
AIM: To determine hepatitis C virus (HCV) infection prevalence in each country of the Middle-East and the overall prevalence of the region. METHODS: In this systematic review, we gathered all documents related to HCV infection prevalence among hemodialysis patients in 17 middle-east countries from April 2006 to March 2016. We selected only cross-sectional studies that had proper sampling and measurement methods as well as a valid statistical analysis. RESULTS: After screening of 7311 documents, 56 studies were selected reporting the prevalence of HCV infection among hemodialysis patients from 10 countries of the region...
January 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28104635/transverse-sinus-stenosis-is-the-most-sensitive-mr-imaging-correlate-of-idiopathic-intracranial-hypertension
#17
P P Morris, D F Black, J Port, N Campeau
BACKGROUND AND PURPOSE: Patients with idiopathic intracranial hypertension have transverse sinus stenosis on gadolinium-bolused MRV, but other MR imaging signs are less consistently seen. Our aim was to demonstrate that transverse sinus stenosis could be identified on conventional MR imaging, and this identification would allow improved diagnostic sensitivity to this condition. MATERIALS AND METHODS: MR imaging and MRV images from 63 patients with idiopathic intracranial hypertension and 96 controls were reviewed by using 3 independent procedures...
January 19, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28104580/leveraging-electronic-health-care-record-information-to-measure-pressure-ulcer-risk-in-veterans-with-spinal-cord-injury-a-longitudinal-study-protocol
#18
Stephen L Luther, Susan S Thomason, Sunil Sabharwal, Dezon K Finch, James McCart, Peter Toyinbo, Lina Bouayad, Michael E Matheny, Glenn T Gobbel, Gail Powell-Cope
BACKGROUND: Pressure ulcers (PrUs) are a frequent, serious, and costly complication for veterans with spinal cord injury (SCI). The health care team should periodically identify PrU risk, although there is no tool in the literature that has been found to be reliable, valid, and sensitive enough to assess risk in this vulnerable population. OBJECTIVE: The immediate goal is to develop a risk assessment model that validly estimates the probability of developing a PrU...
January 19, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28104462/questionnaires-used-to-assess-barriers-of-clinical-guideline-use-among-physicians-are-not-comprehensive-reliable-or-valid-a-scoping-review
#19
REVIEW
Melina L Willson, Robin Wm Vernooij, Anna R Gagliardi
OBJECTIVE: This study described the number and characteristics of questionnaires used to assess barriers of guideline use among physicians. STUDY DESIGN: A scoping review was conducted. MEDLINE and EMBASE were searched from 2005 to June 2016. English language studies that administered a questionnaire to assess barriers of guideline use among practicing physicians were eligible. Summary statistics were used to report study and questionnaire characteristics. Questionnaire content was assessed with a checklist of 57 known barriers...
January 16, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28104459/validation-of-the-intervertebral-disc-histological-degeneration-score-in-cervical-intervertebral-discs-and-their-endplates
#20
Krzysztof A Tomaszewski, Brandon Michael Henry, Tomasz Gładysz, Roman Głowacki, Jerzy A Walocha, Romana Tomaszewska
BACKGROUND CONTEXT: Vertebral joints consist of intervertebral discs (IVDs) and cartilaginous endplates (EP) that lie superiorly and inferiorly to the IVDs and separate them from the adjacent vertebral bodies. With ageing, both IVDs and EPs undergo degeneration. The Histologic Degeneration Score (HDS) is a grading system which microscopically evaluates the degree of degeneration in lumbar discs and predicts it with high accuracy basing on several histological markers of IVD and EP. There is currently a lack of validated histologic grading schemes for cervical spine degeneration...
January 16, 2017: Spine Journal: Official Journal of the North American Spine Society
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