Correlation estimation with singly truncated bivariate data

Im, Jongho; Ahn, Eunyong; Beck, Namseon; Kim, Jae Kwang; Park, Taesung

doi:10.1002/sim.7267

Cited by 3 publications

(3 citation statements)

References 19 publications

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“…As the data for food craving were truncated at the upper limit of 10 (Fig. 3c), we also calculated a truncated regression model (using the truncreg package in R) using the truncated variable as the explanatory variable in the regression model 88,89 in addition to the standard correlation. Second, we took the craving reported by participants on the final online questionnaire, completed after 10 h of fasting or isolation (Craving_Q).…”

Section: Data Analysis Of Fmri Preprocessingmentioning

confidence: 99%

Acute social isolation evokes midbrain craving responses similar to hunger

et al. 2020

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Section: Data Analysis Of Fmri Preprocessingmentioning

confidence: 99%

Acute social isolation evokes midbrain craving responses similar to hunger

et al. 2020

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“…This measure was exactly comparable across sessions, and simultaneous with the fMRI data acquisition. Because the data for food craving were truncated at the upper limit of 10 (see results figure 3), we also calculated a truncated regression model (using the truncreg package in R) using the truncated variable as the explanatory variable in the regression model 88,89 in addition to the standard correlation. Second, we took the craving reported by participants on the final online questionnaire, completed after 10 hours of fasting or isolation ( Craving_Q ).…”

Section: Methodsmentioning

confidence: 99%

Acute social isolation evokes midbrain craving responses similar to hunger

Tomova

Wang

Thompson

et al. 2020

Preprint

101

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When people are forced to be isolated from one another, do they crave social interactions in the same way a hungry person craves food? To address this question, we used functional magnetic resonance imaging (fMRI) to measure neural responses in participants (n=40) evoked by food and social cues after ten hours of mandated fasting or total social isolation. After isolation, people felt lonely and craved social interaction. Midbrain regions showed increased activation to food cues after fasting and to social cues after isolation; these responses were correlated with self-reported craving. Neural patterns in response to food cues when participants were hungry generalized to social cues after isolation. Our results support the intuitive idea that acute isolation causes social craving, similar to hunger.

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“…For the program data, after where the data of healthy children are inevitably excluded, the correlation coefficient is estimated by the likelihood approach using the truncated regression model [41]. This method enables the estimation of the coefficient regardless of the type of distribution of the population.…”

Section: Sam In Taller Children Are Easily Captured By Whzmentioning

confidence: 99%

Do we need to reconsider the CMAM admission and discharge criteria?; an analysis of CMAM data in South Sudan

Ahn

Ouma²,

Loha³

et al. 2020

BMC Public Health

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Background: Weight-for-height Z-score (WHZ) and Mid Upper Arm Circumference (MUAC) are both commonly used as acute malnutrition screening criteria. However, there exists disparity between the groups identified as malnourished by them. Thus, here we aim to investigate the clinical features and linkage with chronicity of the acute malnutrition cases identified by either WHZ or MUAC. Besides, there exists evidence indicating that fat restoration is disproportionately rapid compared to that of muscle gain in hospitalized malnourished children but related research at community level is lacking. In this study we suggest proxy measure to inspect body composition restoration responding to malnutrition management among the malnourished children. Methods: The data of this study is from World Vision South Sudan's emergency nutrition program from 2006 to 2012 (4443 children) and the nutrition survey conducted in 2014 (3367 children). The study investigated clinical presentations of each type of severe acute malnutrition (SAM) by WHZ (SAM-WHZ) or MUAC (SAM-MUAC), and analysed correlation between each malnutrition and chronic malnutrition. Furthermore, we explored the pattern of body composition restoration during the recovery phase by comparing the relative velocity of MUAC 3 with that of weight gain. Results: As acutely malnourished children identified by MUAC more often share clinical features related to chronic malnutrition and minimal overlapping with malnourished children by WHZ, Therefore, MUAC only screening in the nutrition program would result in delayed identification of the malnourished children. Conclusions: The relative velocity of MUAC 3 gain was suggested as a proxy measure for volume increase, and it was more prominent than that of weight gain among the children with SAM by WHZ and MUAC over all the restoring period. Based on this we made a conjecture about dominant fat mass gain over the period of CMAM program. Also, considering initial weight gain could be ascribed to fat mass increase, the current discharge criteria would leave the malnourished children at risk of mortality even after treatment due to limited restoration of muscle mass. Given this, further research should be followed including assessment of body composition for evidence to recapitulate and reconsider the current admission and discharge criteria for CMAM program.

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Correlation estimation with singly truncated bivariate data

Cited by 3 publications

References 19 publications

Acute social isolation evokes midbrain craving responses similar to hunger

Acute social isolation evokes midbrain craving responses similar to hunger

Acute social isolation evokes midbrain craving responses similar to hunger

Do we need to reconsider the CMAM admission and discharge criteria?; an analysis of CMAM data in South Sudan

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