Prediction of cross-sectional geometry from metacarpal radiogrammetry: A validation study

2001 ◽  
Vol 14 (1) ◽  
pp. 74-80 ◽  
Author(s):  
Richard A. Lazenby
Keyword(s):  
Validation Study ◽  
Cross Sectional ◽  
Metacarpal Radiogrammetry

scholarly journals The Roth score as a triage tool for detecting hypoxaemia in general practice: a diagnostic validation study in patients with possible COVID-19

2021 ◽  
Vol 22 ◽  
Author(s):  
Charlotte E.M. ten Broeke ◽  
Jelle C.L. Himmelreich ◽  
Jochen W.L. Cals ◽  
Wim A.M. Lucassen ◽  
Ralf E. Harskamp
Keyword(s):  
General Practice ◽  
Validation Study ◽  
Virus Disease ◽  
External Validation ◽  
Added Value ◽  
Cross Sectional ◽  
Predictive Values ◽  
Single Breath ◽  
C Statistic ◽  
Counting Time

Abstract Aim: To validate the Roth score as a triage tool for detecting hypoxaemia. Backgrounds: The virtual assessment of patients has become increasingly important during the corona virus disease (COVID-19) pandemic, but has limitations as to the evaluation of deteriorating respiratory function. This study presents data on the validity of the Roth score as a triage tool for detecting hypoxaemia remotely in potential COVID-19 patients in general practice. Methods: This cross-sectional validation study was conducted in Dutch general practice. Patients aged ≥18 with suspected or confirmed COVID-19 were asked to rapidly count from 1 to 30 in a single breath. The Roth score involves the highest number counted during exhalation (counting number) and the time taken to reach the maximal count (counting time). Outcome measures were (1) the correlation between both Roth score measurements and simultaneous pulse oximetry (SpO2) on room air and (2) discrimination (c-statistic), sensitivity, specificity and predictive values of the Roth score for detecting hypoxaemia (SpO2 < 95%). Findings: A total of 33 physicians enrolled 105 patients (52.4% female, mean age of 52.6 ± 20.4 years). A positive correlation was found between counting number and SpO2 (rs = 0.44, P < 0.001), whereas only a weak correlation was found between counting time and SpO2 (rs = 0.15, P = 0.14). Discrimination for hypoxaemia was higher for counting number [c-statistic 0.91 (95% CI: 0.85–0.96)] than for counting time [c-statistic 0.77 (95% CI: 0.62–0.93)]. Optimal diagnostic performance was found at a counting number of 20, with a sensitivity of 93.3% (95% CI: 68.1–99.8) and a specificity of 77.8% (95% CI: 67.8–85.9). A counting time of 7 s showed the best sensitivity of 85.7% (95% CI: 57.2–98.2) and specificity of 81.1% (95% CI: 71.5–88.6). Conclusions: A Roth score, with an optimal counting number cut-off value of 20, maybe of added value for signalling hypoxaemia in general practice. Further external validation is warranted before recommending integration in telephone triage.

Development and psychometric evaluation of the motivation for nursing student scale (MNSS): a cross sectional validation study

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Giampiera Bulfone ◽  
Sondra Badolamenti ◽  
Valentina Biagioli ◽  
Massimo Maurici ◽  
Loreana Macale ◽  
...  
Keyword(s):  
Nursing Students ◽  
Hypothesis Testing ◽  
Validation Study ◽  
Self Efficacy ◽  
Nursing Student ◽  
Academic Motivation ◽  
Self Report ◽  
Cross Sectional ◽  
Convenience Sample ◽  
Academic Self Efficacy

Abstract Objectives To develop a self-report scale to measure academic motivation among nursing students and to test its psychometric properties. Methods a cross-sectional validation study with a convenience sample of nursing students (n=1,635) was performed. The Motivation Nursing Students Scale was developed; content, face, construct validity, hypothesis testing and reliability were evaluated. Results The validity structure revealed a four-factor solution and the model reached a satisfactory fit (χ2=622.835 df=160, p<0.01, CFI=0.90, TLT=0.83, RMSEA=0.060 (90% [CI] 0.055–0.064, p=0.001, SRMR=0.067). The hypothesis testing was confirmed with a positive correlation of the academic self-efficacy with Introjected, Intrinsic motivation and a negative correlation with Amotivation. Conclusions We verified a link between academic self-efficacy and motivation. Both motivation and self-efficacy may increase academic achievement and the possibility for HEIs to degrees a number of students in line with demands.

scholarly journals Quickscan assesses risk factors of long-term sickness absence: A cross-sectional (factorial) construct validation study

PLoS ONE ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. e0210359
Author(s):  
Kaat Goorts ◽  
Sofie Vandenbroeck ◽  
Tinne Vander Elst ◽  
Dorina Rusu ◽  
Marc Du Bois ◽  
...  
Keyword(s):  
Risk Factors ◽  
Sickness Absence ◽  
Validation Study ◽  
Construct Validation ◽  
Cross Sectional

scholarly journals Assessing the relative validity of the Scottish Collaborative Group FFQ for measuring dietary intake in adults

2016 ◽  
Vol 20 (3) ◽  
pp. 449-455 ◽  
Author(s):  
Jenna L Hollis ◽  
Leone CA Craig ◽  
Stephen Whybrow ◽  
Heather Clark ◽  
Janet AM Kyle ◽  
...  
Keyword(s):  
Validation Study ◽  
Large Scale ◽  
Weighted Kappa ◽  
Collaborative Group ◽  
Altman Analysis ◽  
Food Diary ◽  
Cross Sectional ◽  
Relative Validity ◽  
Bland Altman Analysis ◽  
Spearman’S Correlation

AbstractObjectiveTo assess the relative validity of the latest version of the Scottish Collaborative Group (SCG) FFQ (version 6.6) in adults living in Scotland.DesignA cross-sectional validation study. Participants completed the self-administered, 169-item SCG FFQ followed by a 7 d, non-weighed food diary. Energy and energy-adjusted macronutrients and micronutrients were examined for relative validity through Spearman’s correlation, the percentage of classification into thirds of intake, Cohen’s weighted kappa (κw) and Bland–Altman analysis.SettingGeneral population living in Scotland.SubjectsNinety-six adults aged 18–65 years.ResultsSpearman’s correlation coefficients ranged from 0·21 (retinol) to 0·71 (Mg). A median of 52 % of adults were correctly classified into thirds of intake (range: 42 % (PUFA, MUFA and Fe) to 64 % (percentage energy from carbohydrates)) and 8 % were grossly misclassified into opposite thirds of intake (range: 3 % (carbohydrates, percentage energy from carbohydrates) to 19 % (thiamin)). Values of κw ranged between 0·20 (PUFA, β-carotene) to 0·55 (percentage energy from carbohydrates). In the Bland–Altman analysis, the smallest limits of agreement, when expressed as a percentage of the mean intake from the FFQ and food diary, were seen for the main macronutrients carbohydrates, fat and protein.ConclusionsAs in the previous validation study more than 10 years ago, the FFQ gave higher estimates of energy and most nutrients than the food diary, but after adjustment for energy intake the FFQ could be used in place of non-weighed food diaries for most macronutrients and many micronutrients in large-scale epidemiological studies.

VALIDATION STUDY OF CADAVER RECTUS FEMORIS MUSCLE MEASUREMENT BY ULTRASONOGRAPHY AND ANATOMICAL PLANIMETRY

2008 ◽  
Vol 11 (04) ◽  
pp. 173-179 ◽  
Author(s):  
Wolfram Weinrebe ◽  
Dietmar Stippler ◽  
Sara Doll ◽  
Kurt Zahr ◽  
Ekkehart Jenetzky ◽  
...  
Keyword(s):  
Validation Study ◽  
Rectus Femoris ◽  
The Elderly ◽  
Accurate Method ◽  
Mean Difference ◽  
Muscle Size ◽  
Cross Sectional ◽  
Significant Difference ◽  
Rectus Femoris Muscle ◽  
Femoris Muscle

Ultrasonography is frequently used to measure the rectus femoris muscle cross-section area, and has been suggested to associate with poor health condition. However, no validation studies have been performed to compare rectus femoris muscle ultrasonography (RFMS) with anatomical planimetry when measuring the muscle cross-sectional area (CSA). This validation study compared the two methods of CSA measurement of unfixed (frozen) and fixed (unfrozen) rectus femoris muscle specimens obtained from elderly human cadavers. Agreement between tests was studied by Bland–Altman analysis. We found a significant difference between planimetry and RFMS of unfixed (frozen) muscle specimens (mean difference, -0.389 cm2; 95% CI, -0.144 to -0.634), p = 0.022. No significant difference was observed between the two methods when measuring fixed (unfrozen) muscle specimens (mean difference, 0.032 cm2, 95% CI, -0.007 to -0.070), p = 0.107. In fixed specimens, the 95% limit of agreement between the two methods ranged between 0.12 cm2 and -0.06 cm2 (<10% deviation); while in unfixed muscle specimens, the range was between 0.28 cm2 and -1.06 cm2 (~50% deviation). In light of the similar results obtained in fixed specimens, ultrasound is a safe and accurate method of rectus femoris muscle size assessment. In clinical practice, RFMS may be used to detect a decrease in rectus femoris muscle mass, typically associated with malnutrition of the elderly, and may therefore be a simple and practical tool for the screening of malnutrition.

scholarly journals Comparison between an online self-administered and an interviewer-administered version of the Asthma Control Questionnaire: a cross-sectional validation study

2013 ◽  
Vol 22 (3) ◽  
pp. 284-289 ◽  
Author(s):  
Persijn J Honkoop ◽  
Rik JB Loijmans ◽  
Evelien H Termeer ◽  
Jiska B Snoeck-Stroband ◽  
Gerben ter Riet ◽  
...  
Keyword(s):  
Asthma Control ◽  
Validation Study ◽  
Asthma Control Questionnaire ◽  
Cross Sectional
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