scholarly journals Self-reported energy intake by FFQ compared with actual energy intake to maintain body weight in 516 adults

2011 ◽  
Vol 106 (2) ◽  
pp. 274-281 ◽  
Author(s):  
Els Siebelink ◽  
Anouk Geelen ◽  
Jeanne H. M. de Vries
Keyword(s):  
Energy Intake ◽  
Correlation Coefficients ◽  
Free Food ◽  
Epidemiological Studies ◽  
Individual Level ◽  
Food Items ◽  
Body Weights ◽  
Maintain Body Weight ◽  
The Mean ◽  
The Individual

It is generally assumed that a FFQ is not suitable to estimate the absolute levels of individual energy intake. However, in epidemiological studies, reported nutrients by FFQ are often corrected for this intake. The objective of the present study was to assess how accurately participants report their energy intakes by FFQ. We compared reported energy intake with actual energy intake needed to maintain stable body weights during eleven controlled dietary trials. FFQ were developed to capture at least 90 % of energy intake. Participants, 342 women and 174 men, with a mean BMI of 22·8 (sd 3·1) kg/m2 filled out the FFQ just before the trials. Energy intakes during the trials were calculated from provided foods and reported free-food items, representing 90 and 10 % of energy intake, respectively. Mean reported energy intake was 97·5 (sd 12·7) % of actual energy intake during the trials; it was 98·9 (sd 15·2) % for women and 94·7 (sd 16·3) % for men (P = 0·004 for difference between sexes). Correlation coefficients between reported and actual energy intakes were 0·82 for all participants, 0·74 for women and 0·80 for men. Individual reported energy intake as a percentage of actual intake ranged from 56·3 to 159·6 % in women and from 43·8 to 151·0 % in men. In conclusion, the FFQ appeared to be accurate for estimating the mean level of energy intakes of these participants and for ranking them according to their intake. However, the large differences found on the individual level may affect the results of epidemiological studies in an unknown direction if nutrients are corrected for energy intakes reported by FFQ.

scholarly journals Healthy decisions in the cued-attribute food choice paradigm have high test-retest reliability

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zahra Barakchian ◽  
Anjali Raja Beharelle ◽  
Todd A. Hare
Keyword(s):  
Food Choice ◽  
Food Choices ◽  
Retest Reliability ◽  
Individual Level ◽  
Food Items ◽  
Intervention Efficacy ◽  
The Individual ◽  
Test Retest Reliability ◽  
Decision Mechanisms ◽  
High Test

AbstractFood choice paradigms are commonly used to study decision mechanisms, individual differences, and intervention efficacy. Here, we measured behavior from twenty-three healthy young adults who completed five repetitions of a cued-attribute food choice paradigm over two weeks. This task includes cues prompting participants to explicitly consider the healthiness of the food items before making a selection, or to choose naturally based on whatever freely comes to mind. We found that the average patterns of food choices following both cue types and ratings about the palatability (i.e. taste) and healthiness of the food items were similar across all five repetitions. At the individual level, the test-retest reliability for choices in both conditions and healthiness ratings was excellent. However, test-retest reliability for taste ratings was only fair, suggesting that estimates about palatability may vary more from day to day for the same individual.

scholarly journals Validation of energy intake by 24-hour multiple pass recall: comparison with total energy expenditure in children aged 5–7 years

2005 ◽  
Vol 93 (5) ◽  
pp. 671-676 ◽  
Author(s):  
Colette Montgomery ◽  
John J. Reilly ◽  
Diane M. Jackson ◽  
Louise A. Kelly ◽  
Christine Slater ◽  
...  
Keyword(s):  
Energy Expenditure ◽  
Total Energy ◽  
Energy Intake ◽  
School Children ◽  
Age Groups ◽  
Total Energy Expenditure ◽  
Doubly Labelled Water ◽  
Individual Level ◽  
Multiple Pass ◽  
The Individual

Accurate measurement of energy intake (EI) is essential in studies of energy balance in all age groups. Reported values for EI can be validated against total energy expenditure (TEE) measured using doubly labelled water (DLW). Our previous work has indicated that the use of the standardized 24 h multiple pass recall (24 h MPR) method produces slight overestimates of EI in pre-school children which are inaccurate at individual level but acceptable at group level. To extend this work, the current study validated EI by 24 h MPR against TEE by DLW in sixty-three (thirty-two boys) school-aged children (median age 6 years). In both boys and girls, reported EI was higher than TEE, although this difference was only significant in the girls (median difference 420 kJ/d, P=0·05). On analysis of agreement between TEE and EI, the group bias was an overestimation of EI by 250 kJ/d with wide limits of agreement (−2880, 2380 kJ/d). EI was over-reported relative to TEE by 7 % and 0·9 % in girls and boys, respectively. The bias in the current study was lower than in our previous study of pre-school children, suggesting that estimates of EI become less inaccurate as children age. However, the current study suggests that the 24 h MPR is inaccurate at the individual level.

Changes in wild red squirrel personality across ontogeny: activity and aggression regress towards the mean

Behaviour ◽  
2015 ◽  
Vol 152 (10) ◽  
pp. 1291-1306 ◽  
Author(s):  
A.D. Kelley ◽  
M.M. Humphries ◽  
A.G. McAdam ◽  
Stan Boutin
Keyword(s):  
Structural Stability ◽  
Environmental Changes ◽  
Population Level ◽  
Behavioural Syndrome ◽  
Red Squirrels ◽  
Individual Level ◽  
Personality Changes ◽  
The Mean ◽  
Differential Stability ◽  
The Individual

Both juvenile and adult animals display stable behavioural differences (personality), but lifestyles and niches may change as animals mature, raising the question of whether personality changes across ontogeny. Here, we use a wild population of red squirrels to examine changes in activity and aggression from juvenile to yearling life stages. Personality may change at the individual level (individual stability), population level (mean level stability), and relative to other individuals (differential stability). We calculated all three types of stability, as well as the structural stability of the activity–aggression behavioural syndrome. Within individuals, both activity and aggression scores regressed towards the mean. Differential stability was maintained for activity, but not aggression. Structural stability was maintained; however, the activity–aggression correlation increased in squirrels that gained territories later in the season. These results suggest that personality undergoes some changes as animals mature, and that the ontogeny of personality can be linked to environmental changes.

Maintenance rations for Merino sheep. IV. The performance of adult Merino ewes fed daily and weekly at three levels of energy intake

1957 ◽  
Vol 8 (1) ◽  
pp. 75 ◽  
Author(s):  
PK Briggs ◽  
MC Franklin ◽  
GL McClymont
Keyword(s):  
Body Weight ◽  
Sodium Chloride ◽  
Energy Intake ◽  
Survival Rates ◽  
Experimental Period ◽  
The Body ◽  
Merino Sheep ◽  
Wool Production ◽  
Body Weights ◽  
The Mean

Dry adult Merino ewes were fed at daily or weekly intervals on oat grain at levels which provided 4.0, 3.0, or 2.0 lb starch equivalent (S.E.) per sheep per week. The experimental periods were 223, 223, and 181 days respectively. Differences between the mean body weights of the ewes a t the three levels of feeding were highly significant (P < 0.001). Body weight varied only slightly and no losses occurred in ewes fed weekly at the rate of 4.0 lb S.E. per head. Ewes fed daily a t this level had a significantly greater mean body weight (P < 0.001) a t the conclusion of the 223-day experimental period. The addition of a sodium chloride supplement did not improve the body weight or wool production of ewes fed weekly a t the level of 4.0 lb S.E. The mean body weight of ewes fed at the levels of 3.0 or 2.0 lb S.E. per head declined over the first 12 and 18 respectively and thereafter remained relatively constant. There were no significant differences at these levels of feeding between groups fed daily and weekly in respect of body weight, wool production, or survival rates. Ewes fed a t the level of 4.0 lb S.E. grew significantly more wool than those given 3.0 lb S.E. (P < 0.001). Losses were negligible in all groups except those fed a t the level of 2.0 lb S.E. In these groups there were few deaths in the first 16 weeks, but in the subsequent 10 weeks losses totalled 17.1 per cent. Ewes fed a t the level of 2.0 lb S.E. consumed their rations at a significantly slower rate (P < 0.01) than did those fed a t the level of 4.0 lb S.E.

COMPARING COMMUNITY-PREFERENCE–BASED AND DIRECT STANDARD GAMBLE UTILITY SCORES: EVIDENCE FROM ELECTIVE TOTAL HIP ARTHROPLASTY

2003 ◽  
Vol 19 (2) ◽  
pp. 362-372 ◽  
Author(s):  
David Feeny ◽  
Christopher Blanchard ◽  
Jeffrey L. Mahon ◽  
Robert Bourne ◽  
Cecil Rorabeck ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Standard Gamble ◽  
Intraclass Correlation ◽  
Individual Level ◽  
Total Hip ◽  
The Mean ◽  
The Individual ◽  
Community Preferences ◽  
Utility Scores

Objectives: Do utility scores based on patient preferences and scores based on community preferences agree? The purpose is to assess agreement between directly measured standard gamble (SG) utility scores and utility scores from the Health Utilities Index Mark 2 (HUI2) and Mark 3 (HUI3) systems.Methods: Patients were assessed repeatedly throughout the process of waiting to see a surgeon, waiting for surgery, and recovery after total hip arthroplasty (THA). Group mean scores are compared using paired t-tests. Agreement is assessed using the intraclass correlation coefficient (ICC).Results: The mean SG, HUI2, and HUI3 (SD) scores at assessment 1 are 0.62 (0.31), 0.62 (0.19), and 0.52 (0.21); n=103. At assessment 2, the means are 0.67 (0.30), 0.68 (0.30), and 0.58 (0.22); n=84. There are no statistically significant differences between group mean SG and HUI2 scores. Mean SG and HUI3 scores are significantly different. ICCs are low.Conclusions: At the mean level for the group, SG and HUI2 scores match closely. At the individual level, agreement is poor. HUI2 scores were greater than HUI3 scores. HUI2 and HUI3 are appropriate for group level analyses relying on community preferences but are not a good substitute for directly measured utility scores at the individual leve.

scholarly journals Healthier decisions in the cued-attribute food choice paradigm have high test-retest reliability across five task repetitions over 14 days

2021 ◽  
Author(s):  
Zahra Barakchian ◽  
Anjali Raja Beharelle ◽  
Todd A. Hare
Keyword(s):  
Food Choice ◽  
Food Choices ◽  
Retest Reliability ◽  
Individual Level ◽  
Food Items ◽  
Intervention Efficacy ◽  
The Individual ◽  
Test Retest Reliability ◽  
Decision Mechanisms ◽  
High Test

ABSTRACTFood choice paradigms are commonly used to study decision mechanisms, individual differences, and intervention efficacy. Here, we measured behavior from twenty-three healthy young adults who completed five repetitions of a cued-attribute food choice paradigm over two weeks. This task includes cues prompting participants to explicitly consider the healthiness of the food items before making a selection, or to choose naturally based on whatever freely comes to mind. We found that the average patterns of food choices following both cue types and ratings about the palatability (i.e. taste) and healthiness of the food items were similar across all five repetitions. At the individual level, the test-retest reliability for choices in both conditions and healthiness ratings was excellent. However, test-retest reliability for taste ratings was only fair, suggesting that estimates about palatability may vary more from day to day for the same individual.

Reliability of Shoulder Symptom Recall after 1 Year in a Retrospective Application of the Oxford Shoulder Score

2012 ◽  
Vol 4 (4) ◽  
pp. 255-258
Author(s):  
Michael Held ◽  
Steve Roche ◽  
Basil Vrettos ◽  
Maritz Laubscher ◽  
Johan Walters
Keyword(s):  
Shoulder Function ◽  
Test Pair ◽  
Altman Plot ◽  
Bland Altman Plot ◽  
Individual Level ◽  
Oxford Shoulder Score ◽  
The Mean ◽  
One Year ◽  
The Individual ◽  
Shoulder Score

Background The accuracy of retrospective recall of shoulder symptoms has not been well documented. This prospective study assesses the ability of patients to recall their preoperative shoulder function one year after a surgical intervention, using the Oxford Shoulder Score (OSS). Methods 35 patients completed an OSS before undergoing shoulder surgery. One year later, patients were asked to recall their symptoms prior to their surgery. The recalled OSS of the patients as a group was compared to their preoperative score. The recall bias of each test pair was assessed with a Bland – Altman plot. Results On recall after a mean of 12.6 months, the mean OSS from the index assessment increased from 36.25 to 38.25 points. The mean difference of 2 points for the patients as a group was not significant (p = 0.14). The statistical limits of agreement of the Bland – Altman plot were set at +/-2 SD = 14.079 points. The plotted points showed fair correlation between each individual test pair. Conclusion The recall of symptoms of a large group of patients at 1 year after the index intervention appears to have a moderate correlation with the preoperative scoring. Although statistically acceptable, this limit of agreement is much larger than the 4.5-point difference, established to be clinically relevant in prior studies. The variation seen within the scores at the individual level suggests that these data cannot be used as a retrospective tool.

scholarly journals Assessment of energy and macronutrient intake in young men: a comparison of 4-day food record and 24-hour dietary recall

2009 ◽  
Vol 22 (5) ◽  
pp. 621-630 ◽  
Author(s):  
Selma Coelho Liberato ◽  
Josefina Bressan ◽  
Andrew Peter Hills
Keyword(s):  
Food Intake ◽  
Energy Expenditure ◽  
Energy Intake ◽  
Young Men ◽  
Group Level ◽  
Food Record ◽  
Cross Sectional ◽  
Dietary Recall ◽  
Individual Level ◽  
The Individual

OBJECTIVE: The objective was to assess the quantitative agreement between a 4-day food record and a 24-hour dietary recall in young men. METHODS: Thirty-four healthy men aged 18-25 years had their food intake estimated by 4-day food record within one week following 24-hour dietary recall in a cross-sectional study. Resting metabolic rate was assessed by indirect calorimetry and Energy Expenditure was estimated by physical activity records completed simultaneously with food intake records. The validity of food records was determined by direct comparison of Energy Intake and Energy Expenditure (95% confidence interval for Energy Intake/Energy Expenditure). RESULTS: There were good agreements between the measurements of energy and macronutrient intakes by 24-hour dietary recall and 4-day food record at the group level, but not at the individual level. Compared to energy expenditure, about 20% and 9% of participants underreported their Energy Intake by 4-day food record and 24-hour dietary recall, respectively. Over 30% of underreporters of Energy Intake estimated by 24-hour dietary recall underreported Energy Intake estimated by 4-day food record. CONCLUSION: Both diet methods, 24-hour dietary recall and 4-day food record, may be used to collect data at the group level, but not at the individual level. Both methods, however, appear to underestimate Energy Intake. Underreporting may be subject-specific and appears that is more difficult to retrieve valid dietary data from some people than others.

Accuracy of equations for predicting 24-h urinary potassium excretion from spot urine samples in Chinese children

2021 ◽  
pp. 1-9
Author(s):  
Xiaolu Nie ◽  
Yaguang Peng ◽  
Siyu Cai ◽  
Zehao Wu ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Urine Samples ◽  
Misclassification Rate ◽  
Accurate Estimation ◽  
Potassium Excretion ◽  
Spot Urine ◽  
Individual Level ◽  
Potassium Intake ◽  
Urinary Potassium ◽  
The Mean ◽  
The Individual

Abstract Accurate assessments of potassium intake in children are important for the early prevention of CVD. Currently, there is no simple approach for accurate estimation of potassium intake in children. We aim to evaluate the accuracy of 24-h urinary potassium excretion (24UKV) estimation in children using three common equations: the Kawasaki, Tanaka and Mage formulas, in a hospital-based setting. A total of 151 participants aged 5–18 years were initially enrolled, and spot urine samples were collected in the whole 24-h duration to measure the concentrations of potassium and creatinine. We calculated the mean difference, absolute and relative difference and misclassification rate between measured 24UKV and the predicted ones using Kawasaki, Tanaka and Mage formulas in 129 participants. The mean measured 24UKV was 1193·3 mg/d in our study. Mean differences between estimated and measured 24UKV were 1215·6, −14·9 and 230·3 mg/d by the Kawasaki, Tanaka and Mage formulas, respectively. All estimated 24UKV were significantly different from the measured values in all the time point (all P < 0·05), except for the predicted values from Tanaka formula using morning, afternoon and evening spot urine. The proportions with relative differences over 40 % were 87·2%, 32·5% and 47·3 % for Kawasaki, Tanaka and Mage formulas, respectively. Misclassification rates were 91·5 % for Kawasaki, 44·4 % for Tanaka and 58·9 % for Mage formula at the individual level. Our findings showed that misclassification could occur on the individual level when using Kawasaki, Tanaka and Mage formulas to estimate 24UKV from spot urine in the child population.

Abstract P117: Comparison Between Routine Clinical And Research Blood Pressure Measurements

Hypertension ◽  
2021 ◽  
Vol 78 (Suppl_1) ◽  
Author(s):  
Mark Sanders ◽  
Paul Muntner ◽  
Rong Wei ◽  
Daichi Shimbo ◽  
Joseph E Schwartz ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Clinical Care ◽  
Pearson Correlation ◽  
Mean Difference ◽  
Limits Of Agreement ◽  
Individual Level ◽  
Oscillometric Device ◽  
Research Grade ◽  
The Mean ◽  
The Individual

Background: Prior studies have found a large difference between blood pressure (BP) when measured routinely in the clinic compared with research studies. We aimed to compare routine clinic BP to research-grade BP in a large, integrated health care system that has initiatives to standardize clinic BP measurements. Methods: We identified Kaiser Permanente Southern California members ≥ 65 years old diagnosed with hypertension and taking antihypertensive medication from the Ambulatory Blood Pressure in Older Adults (AMBROSIA) study. Research-grade BPs were obtained under standardized conditions by certified research staff using a semi-automatic oscillometric device, pre-programmed to take 3 measurements at 1-minute intervals. The average of the 3 BPs was used. The most recent (prior to study enrollment) routine clinic BP from an outpatient, non-urgent clinical care encounter, measured using a semi-automatic oscillometric device, was obtained via electronic health records. If there were multiple BP readings on the same day, the first reading was used. The mean difference between clinic BP and research-grade BP was tested using paired t-tests, while the Pearson correlation and a Bland-Altman analysis were used to assess level of agreement. Results: We included 309 participants (mean age 75 ± 6 years; 54% female; 49% non-Hispanic white, 17% non-Hispanic Black, 17% Hispanic, 15% Asian/Pacific Islander). When measured in routine clinic practice and in the research study, the mean (SD) systolic BP (SBP) was 135 (16) mm Hg and 132 (15) mm Hg, respectively, (mean difference = - 2.7 mm Hg; 95% CI -4.6 to -0.9; limits of agreement = -36 to 30 mm Hg) and the mean diastolic BP (DBP) was 70 (10) mm Hg and 69 (10) mm Hg, respectively (mean difference = - 0.9 mm Hg; 95% CI -2.1 to 0.3; limits of agreement = -22 to 20 mm Hg). Pearson correlation analysis showed modest correlations between the two types of BP measurements (SBP r=0.40, p<0.01; DBP r=0.45, p<0.01). Conclusion: The difference between clinic and research-grade BP was, on average, small, but differences at the individual level were often substantial.

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