Reproducibility of food and nutrient intake estimates using a semi-quantitative FFQ in Australian adults

2009 ◽  
Vol 12 (12) ◽  
pp. 2359-2365 ◽  
Author(s):  
Torukiri I Ibiebele ◽  
Sanjoti Parekh ◽  
Kylie-ann Mallitt ◽  
Maria Celia Hughes ◽  
Peter K O’Rourke ◽  
...  
Keyword(s):  
Vegetable Intake ◽  
Adult Population ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Kappa Statistics ◽  
Food Groups ◽  
Intraclass Correlation Coefficients ◽  
One Year ◽  
General Community

AbstractObjectiveTo assess the reproducibility of a 135-item self-administered semi-quantitative FFQ.DesignControl subjects who had previously completed an FFQ relating to usual dietary intake in a nationwide case–control study of cancer between November 2003 and April 2004 were randomly selected, re-contacted, and invited to complete the same FFQ a second time approximately one year later (between January and April 2005). Agreement between the two FFQ was compared using weighted kappa statistics and intraclass correlation coefficients (ICC) for food groups and nutrients. Summary questions, included in the FFQ, were used to assess overall intakes of vegetables, fruits and meat.SettingGeneral community in Australia.SubjectsOne hundred men and women aged 22–79 years, randomly selected from the previous control population.ResultsThe weighted κ and ICC measures of agreement for food groups were moderate to substantial for seventeen of the eighteen food groups. For nutrients, weighted κ ranged from 0·44 for starch to 0·83 for alcohol while ICC ranged from 0·51 to 0·91 for the same nutrients. Estimates of meat, fruit and vegetable intake using summary questions were similar for both survey periods, but were significantly lower than estimates from summed individual food items.ConclusionsThe FFQ produced reproducible results and is reasonable in assessing the usual intake of various foods and nutrients among an Australian adult population.

scholarly journals Identification and Reproducibility of Plasma Metabolomic Biomarkers of Habitual Food Intake in a US Diet Validation Study

Metabolites ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 382
Author(s):  
Ying Wang ◽  
Rebecca A. Hodge ◽  
Victoria L. Stevens ◽  
Terryl J. Hartman ◽  
Marjorie L. McCullough
Keyword(s):  
Validation Study ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Ethnically Diverse ◽  
Epidemiological Studies ◽  
Food Groups ◽  
Intraclass Correlation Coefficients ◽  
Bonferroni Adjustment ◽  
Absolute Correlation ◽  
Potential Use

Previous metabolomic studies have identified putative blood biomarkers of dietary intake. These biomarkers need to be replicated in other populations and tested for reproducibility over time for the potential use in future epidemiological studies. We conducted a metabolomics analysis among 671 racially/ethnically diverse men and women included in a diet validation study to examine the correlation between >100 food groups/items (101 by a food frequency questionnaire (FFQ), 105 by 24-h diet recalls (24HRs)) with 1141 metabolites measured in fasting plasma sample replicates, six months apart. Diet–metabolite associations were examined by Pearson’s partial correlation analysis. Biomarker reproducibility was assessed using intraclass correlation coefficients (ICCs). A total of 677 diet–metabolite associations were identified after Bonferroni adjustment for multiple comparisons and restricting absolute correlation coefficients to greater than 0.2 (601 associations using the FFQ and 395 using 24HRs). The median ICCs of the 238 putative biomarkers was 0.56 (interquartile range 0.46–0.68). In this study, with repeated FFQs, 24HRs and plasma metabolic profiles, we identified several potentially novel food biomarkers and replicated others found in our previous study. Our findings contribute to the growing literature on food-based biomarkers and provide important information on biomarker reproducibility which could facilitate their utilization in future nutritional epidemiological studies.

Does the Nonweightbearing Foot Position Replicate the Neutral Calcaneal Stance Position in an Adult Population?

2021 ◽  
Vol 111 (5) ◽  
Author(s):  
Hayley Walker ◽  
Rolf Scharfbillig ◽  
Sara Jones
Keyword(s):  
Adult Population ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Intraclass Correlation Coefficients ◽  
Foot Length ◽  
Ideal Position ◽  
Foot Position ◽  
Ideal Measure ◽  
Foot Mobility ◽  
The Ideal

Background The neutral calcaneal stance position (NCSP), despite its known issues, is currently used as an “ideal” measure compared with the resting stance position in clinical podiatric medicine. The nonweightbearing (NWB) foot position, as used in the foot mobility magnitude (FMM), can provide an alternative comparative position, which is partially validated, if a significant correlation between the NCSP and the NWB position exists. This study aimed to establish the correlation between the component measures of the FMM in the NCSP and the NWB foot position of the FMM. Methods Eighty participants were recruited. Measures of dorsal arch height (DAH) and midfoot width (MFW) were obtained at the 50% total foot length mark in the NCSP and the NWB position by two examiners using the apparatus described by McPoil et al. Results Reliability analysis with intraclass correlation coefficients (ICCs) indicated intrarater results of 0.90 to 0.99 for DAH and 0.96 to 0.99 for MFW and interrater results of 0.90 for DAH and 0.96 for MFW in the NWB position. Using a Pearson product moment correlation coefficient analysis, there was a significant correlation between the NCSP and the NWB position for DAH (r = 0.82) and MFW (r = 0.86). Conclusions A significant correlation between the NCSP and the NWB position was evident when the measures of DAH and MFW were conducted. Therefore, clinically, the NWB position can potentially replace the NCSP as the ideal position for clinical treatment.

scholarly journals Analysis of interobserver reproducibility in grading histological patterns of dysplastic nevi*

2013 ◽  
Vol 88 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Aretha Brito Nobre ◽  
Juan Piñeiro-Maceira ◽  
Ronir Raggio Luiz
Keyword(s):  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Risk Markers ◽  
Diagnostic Agreement ◽  
Interobserver Reproducibility ◽  
Intraclass Correlation Coefficients ◽  
Dysplastic Nevi ◽  
Different Levels ◽  
Histopathological Parameter

BACKGROUND: Dysplastic nevi are among the most important cutaneous melanoma simulators. They are important risk markers for this neoplasia and can be its potential precursors. Some authors found a statistically significant relationship between the degree of dysplasia and the risk for developing melanoma. However, reproducibility of grading criteria ranged from poor to fair in the researched articles. OBJECTIVE: To test the reproducibility of the grading criteria proposed by Sagebiel et al. regarding dysplastic nevi. METHODS: Histological specimens of 75 dysplastic nevi were graded, independently and in a blinded fashion, according to preestablished criteria, by a panel of 10 pathologists with different levels of experience. Diagnostic agreement was calculated using weighted kappa and intraclass correlation coefficients. RESULTS: The average of weighted kappa values was 0.13 for all observers, 0.12 for dermatopathologists, 0.18 for general pathologists and 0.05 for residents. Intraclass correlation coefficient values were 0.2 for all observers, 0.18 for dermatopathologists, 0.33 for general pathologists and 0.15 for residents. CONCLUSIONS: Histopathological grading for dysplastic nevi was not reproducible in this Brazilian series, so the criteria used are not a helpful histopathological parameter for clinicopathological correlation.

scholarly journals Agreement in Occupational Exposures Between Men and Women Using Retrospective Assessments by Expert Coders

2018 ◽  
Vol 62 (9) ◽  
pp. 1159-1170 ◽  
Author(s):  
Aude Lacourt ◽  
France Labrèche ◽  
Mark S Goldberg ◽  
Jack Siemiatycki ◽  
Jérôme Lavoué
Keyword(s):  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Occupational Exposures ◽  
Weighted Kappa ◽  
Case Control Studies ◽  
Men And Women ◽  
Bayesian Hierarchical ◽  
Intraclass Correlation Coefficients ◽  
Occupational Agent ◽  
Exposure Metrics

Abstract Objectives To estimate the level of agreement and identify notable differences in occupational exposures (agents) between men and women from retrospective assessments by expert coders. Methods Lifetime occupational histories of 1657 men and 2073 women from two case–control studies, were translated into exposure estimates to 243 agents, from data on 13882 jobs. Exposure estimates were summarized as proportions and frequency-weighted intensity of exposure for 59 occupational codes by sex. Agreement between metrics of exposure in men’s and women’s jobs was determined with intraclass correlation coefficients (ICC) and weighted Kappa coefficients, using as unit of analysis (‘cell’) a combination of occupational code and occupational agent. ‘Notable’ differences between men and women were identified for each cell, according to a Bayesian hierarchical model for both proportion and frequency-weighted intensity of exposure. Results For cells common to both men and women, the ICC for continuous probability of exposure was 0.84 (95% CI: 0.83–0.84) and 7.4% of cells showed notable differences with jobs held by men being more often exposed. A weighted kappa of 0.67 (95% CI: 0.61–0.73) was calculated for intensity of exposure, and an ICC of 0.67 (95% CI: 0.62–0.71) for frequency-weighted intensity of exposure, with a tendency of higher values of exposure metrics in jobs held by men. Conclusions Exposures were generally in agreement between men and women. Some notable differences were identified, most of them explained by differential sub-occupations or industries or dissimilar reported tasks within the studied occupations.

scholarly journals Reliability and Validity of Trunk Assessment for People With Multiple Sclerosis

2006 ◽  
Vol 86 (1) ◽  
pp. 66-76 ◽  
Author(s):  
Geert Verheyden ◽  
Godelieve Nuyens ◽  
Alice Nieuwboer ◽  
Pol Van Asch ◽  
Piet Ketelaer ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Construct Validity ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Altman Analysis ◽  
Bland Altman Analysis ◽  
Intraclass Correlation Coefficients ◽  
Test Retest Reliability

Abstract Background and Purpose. Standardized scales are a prerequisite for rehabilitation and research. This study was designed to determine the reliability and validity of scores on items of the trunk assessment of the Melsbroek Disability Scoring Test (MDST) and Trunk Impairment Scale (TIS) in people with multiple sclerosis (MS). Subjects. Thirty people with MS participated in the study. Methods. Interrater and test-retest reliability and construct validity were assessed. Results. Kappa and weighted kappa values for the items of the trunk assessment of the MDST ranged from .74 to .95, and the kappa and weighted kappa values for the TIS items ranged from .46 to 1.00. Intraclass correlation coefficients for interrater and test-retest agreement were .93 and .92, respectively, for the trunk assessment of the MDST and .97 and .95, respectively, for the TIS. Bland-Altman analysis showed consistency of scores without observer bias. Construct validity was established. Discussion and Conclusion. The MDST and TIS provide reliable assessments of the trunk and are valid scales for measuring trunk performance in people with MS. [Verheyden G, Nuyens G, Nieuwboer A, et al. Reliability and validity of trunk assessment for people with multiple sclerosis.

A Quantitative Food Frequency Questionnaire for Women in Southeast China: Development and Reproducibility

2005 ◽  
Vol 17 (1) ◽  
pp. 29-35 ◽  
Author(s):  
M. Zhang ◽  
CW Binns ◽  
AH Lee
Keyword(s):  
Food Frequency Questionnaire ◽  
Eating Habits ◽  
Chinese Women ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Food Group ◽  
Kappa Statistics ◽  
Food Frequency ◽  
Southeast China ◽  
Intraclass Correlation Coefficients

This study describes the development and reproducibility of a 128-item quantitative food frequency questionnaire (FFQ) to measure usual food consumption for women in southeast China. The FFQ was pre-tested using 51 Chinese women who recently migrated to Australia. Cronbach's alpha coefficient was 0.81 for internal consistency. The reliability of the FFQ was then assessed by another test-retest study. A sample of 41 women residing in southeast China was interviewed twice within 12 weeks. Intraclass correlation coefficients were moderate to high for mean food group consumption (0.43-0.96) and mean daily nutrient intakes (0.47-0.89). Kappa statistics for eating habits ranged from 0.27 to 0.89 in the test-retest. The mean ratio of energy intake to basal metabolic rate was 1.73 (S.D. 0.39) in both test and retest samples. The study confirmed that the FFQ method using standard containers is appropriate to assess dietary intake for women in southeast China. Asia Pac J Public Health 2005: 17(1): 29-35.

scholarly journals HoNOS–ABI: a reliable outcome measure of neuropsychiatric sequelae to brain injury?

2005 ◽  
Vol 29 (2) ◽  
pp. 53-55 ◽  
Author(s):  
S. Fleminger ◽  
E. Leigh ◽  
P. Eames ◽  
L. Langrell ◽  
R. Nagraj ◽  
...  
Keyword(s):  
Brain Injury ◽  
Interrater Reliability ◽  
Outcome Measure ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Acquired Brain Injury ◽  
Weighted Kappa ◽  
Routine Clinical Practice ◽  
Clinical Implications ◽  
Intraclass Correlation Coefficients

Aims and MethodThe Health of the Nation Outcome Scale for Acquired Brain Injury (HoNOS–ABI) is a relatively new outcome measure designed to assess the neuropsychiatric sequelae of brain damage. This study investigated the interrater reliability of this scale. Fifty patients with traumatic brain injury receiving rehabilitation were each rated twice on the HoNOS–ABI, by two different raters. There were 24 raters in total.ResultsWeighted kappa values ranged from 0.43 to 0.84 and intraclass correlation coefficients from 0.58 to 0.97 for the ten items assessed. This indicated that agreement was moderate to substantial for all items.Clinical ImplicationsThe scales consistently measured the items of interest across different raters. This indicates that HoNOS–ABI is a reliable outcome measure when applied by different raters in routine clinical practice.

scholarly journals First evaluation steps of a new method for dietary intake estimation regarding a list of key food groups in adults and in different sociodemographic and health-related behaviour strata

2017 ◽  
Vol 20 (15) ◽  
pp. 2660-2669 ◽  
Author(s):  
Luis M Béjar
Keyword(s):  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Food Group ◽  
New Method ◽  
Short Paper ◽  
Kappa Statistics ◽  
Food Groups ◽  
Dietary Recall ◽  
The Mean ◽  
Habitual Intake

AbstractObjectiveA new method known as ‘current-day dietary recall’ (current-day recall) is based on an application for mobile phones called ‘electronic 12 h dietary recall’ (e-12HR). This new method was designed to rank participants into categories of habitual intake regarding a series of key food groups. The present study compared current-day recall against a previously validated short paper FFQ.DesignParticipants recorded the consumption of selected food groups using e-12HR during twenty-eight consecutive days and then filled out a short paper FFQ at the end of the study period. To evaluate the association and agreement between both methods, Spearman’s correlation coefficients (SCC), cross-classification analysis and weighted kappa statistics (κw) were used.SettingAndalusia, Spain, Southern Europe.SubjectsUniversity students and employees over the age of 18 years.ResultsOne hundred and eighty-seven participants completed the study (64·2 % female, 35·8 % male). For all particpants, for all food group intakes, the mean SCC was 0·70 (SCC≥0·62 were observed for all strata); the mean percentage of participants cross-classified into categories of ‘exact agreement+adjacent’ was 90·1 % (percentages≥87·8 % were observed for all strata); and the mean κw was 0·55 (κw≥0·53 in ten of the twelve strata).ConclusionsFor the whole sample and for all strata thereof, the current-day recall has good agreement with the previously validated short paper FFQ for assessing food group intakes, rendering it a useful method for ranking individuals.

Development and Reliability of an Athlete Introductory Movement Screen for Use in Emerging Junior Athletes

2019 ◽  
Vol 31 (4) ◽  
pp. 448-457 ◽  
Author(s):  
Simon A. Rogers ◽  
Peter Hassmén ◽  
Alexandra H. Roberts ◽  
Alison Alcock ◽  
Wendy L. Gilleard ◽  
...  
Keyword(s):  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Intrarater Reliability ◽  
Training Interventions ◽  
Intraclass Correlation Coefficients ◽  
Junior Athletes ◽  
Sum Score ◽  
Movement Screening ◽  
Sum Scores

Purpose: A novel 4-task Athlete Introductory Movement Screen was developed and tested to provide an appropriate and reliable movement screening tool for youth sport practitioners. Methods: The overhead squat, lunge, push-up, and a prone brace with shoulder touches were selected based on previous assessments. A total of 28 mixed-sport junior athletes (18 boys and 10 girls; mean age = 15.7 [1.8] y) completed screening after viewing standardized demonstration videos. Athletes were filmed performing 8 repetitions of each task and assessed retrospectively by 2 independent raters using a 3-point scale. The primary rater reassessed the footage 3 weeks later. A subgroup (n = 11) repeated the screening 7 days later, and a further 8 athletes were reassessed 6 months later. Intraclass correlation coefficients (ICC), typical error (TE), coefficient of variation (CV%), and weighted kappa (k) were used in reliability analysis. Results: For the Athlete Introductory Movement Screen 4-task sum score, intrarater reliability was high (ICC = .97; CV = 2.8%), whereas interrater reliability was good (intraclass correlation coefficient = .88; CV = 5.6%). There was a range of agreement from fair to almost perfect (k = .31–.89) between raters across individual movements. A 7-day and 6-month test–retest held good reliability and acceptable CVs (≤ 10%) for sum scores. Conclusion: The 4-task Athlete Introductory Movement Screen appears to be a reliable tool for profiling emerging athletes. Reliability was strongest within the same rater; it was lower, yet acceptable, between 2 raters. Scores can provide an overview of appropriate movement competencies, helping practitioners assess training interventions in the athlete development pathway.

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