scholarly journals A novel approach to latent class modelling: identifying the various types of body mass index individuals

2020 ◽  
Vol 183 (3) ◽  
pp. 983-1004
Author(s):  
Sarah Brown ◽  
William Greene ◽  
Mark Harris
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Latent Class ◽  
Novel Approach ◽  
Latent Class Modelling

scholarly journals Patterns of food parenting practices regarding junk food and sugary drinks among parent-child dyads

2020 ◽  
Author(s):  
Jessica Thomson ◽  
Erin Hennessy ◽  
Alicia Landry ◽  
Melissa Goodman
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Parenting Practices ◽  
Latent Class ◽  
Feeding Practices ◽  
Parental Authority ◽  
Junk Food ◽  
Added Sugars ◽  
Sugary Drinks ◽  
Parent Child

Abstract Background: Children’s food preference and intake patterns are affected by parental child feeding practices. The objective of this study was to determine patterns of food parenting practices regarding junk food and sugary drinks (JS) and to investigate their associations with demographic characteristics and dietary intake in a large cohort of parents and their children (12-17 years). Methods: Dyadic survey data from the cross-sectional, internet-based Family Life, Activity, Sun, Health, and Eating Study, conducted in 2014, were analyzed using latent class analysis to identify patterns of use for six JS parenting practices – negative emotions, restriction, monitoring, availability, modeling, and child involvement – based on both parent and child report. Model covariates included self-reported parent sex, body mass index, added sugars intake, and legitimacy of parental authority; and self-reported child age, sex, body mass index percentile, added sugars intake, and legitimacy of parental authority. Results: Based on 1,657 parent-child dyads, five latent classes were identified – Complete Influencers (28%), Indifferent Influencers (21%), Negative Influencers (20%), Minimal Influencers (18%), and Disagreeing Influencers (13%). Compared to older child dyads, younger child dyads had 79% and 63% lower odds of belonging to Indifferent and Minimal Influencers versus Complete Influencers. Odds of belonging to Indifferent and Negative Influencers were 4% and 5% higher for every teaspoon increase in parent added sugars intake while odds for Minimal Influencers were 6% lower for every teaspoon increase in child added sugars intake versus Complete Influencers. Dyads with low compared to high parental and child agreement with legitimacy of parental authority regarding JS had between 2 and 26 times the odds of belonging to one of the other classes versus Complete Influencers. Conclusions: The study findings suggest that parents utilize distinct patterns of feeding practices related to JS ranging from use of many practices, use of some practices, to low use of any practice, with differential associations with parent and child intakes of added sugars. Counseling or intervening with parents to use a mix of structure practices to positively influence their child’s and possibly their own intake of sugary snacks and drinks may prove more efficacious than use of coercive control practices.

Novel Approach for 2-Port Laparoscopic Hysterectomy

2019 ◽  
Vol 26 (4) ◽  
pp. 442-448
Author(s):  
Paul Tyan ◽  
James Robinson ◽  
Monica Dandapani ◽  
Jessica Li ◽  
Alex Gu ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Case Series ◽  
Laparoscopic Hysterectomy ◽  
University Hospital ◽  
Surgical Interventions ◽  
Novel Approach ◽  
Estimated Blood Loss ◽  
Surgical History ◽  
Retrospective Comparative Study

Background and Objectives. To describe a novel technique for a port-reducing laparoscopic hysterectomy. The 2-port laparoscopic hysterectomy (TPH) is performed through two 5-mm ports without the use of any multiport channels. We demonstrate outcomes via a large case series. We also describe and provide a video showing the TPH technique. Methods. Retrospective comparative study between the newly developed TPH and the conventional 4-port hysterectomy techniques. Variables of patients who underwent a TPH with fellowship-trained gynecologic surgeons at a single academic university hospital were collected through electronic medical records chart review. Results. Forty-five patients underwent a TPH. Mean age was 39.4, body mass index was 28.5 kg/m2, and uterine weight was 170.0 g. Our outcomes of interest were operative time (98.4 minutes, mean), estimated blood loss (65.6 mL, mean), conversion to 3-port (1/45), and intraoperative (0/45) and postoperative (5/45) complications. By comparing the TPH to the conventional 4-port laparoscopic hysterectomy within a similar setting, we provide insight into variables that prompt the minimally invasive gynecologic surgeon to perform a port-reducing procedure. Patients were more likely to be allocated for a TPH if they were younger (37.8 vs 44.7, P = .005), had a lower body mass index (29.0 vs 32.5, P = .07), smaller uterus (143.1 vs 672.3 g, P < .001), and were white (56.8% and 22.4%, P < .001). Conclusions. The TPH is a novel port-reducing hysterectomy that is safe in a subset of patients with small uteri and limited surgical history who require no other surgical interventions at the time of hysterectomy.

scholarly journals Trajectories of Dietary Patterns, Sleep Duration, and Body Mass Index in China: A Population-Based Longitudinal Study from China Nutrition and Health Survey, 1991–2009

Nutrients ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2245
Author(s):  
Yingting Cao ◽  
Xiaoyue Xu ◽  
Zumin Shi
Keyword(s):  
Body Mass Index ◽  
Sleep Duration ◽  
Body Mass ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Fast Food ◽  
Latent Class ◽  
Linear Models ◽  
Latent Class Model ◽  
Nutrition Survey

No study has used trajectories of dietary patterns to examine their effects on sleep duration and body mass index over time in the Chinese population. We analyzed data from adults participating in the China Health and Nutrition Survey between 1991 and 2009. Dietary intake was measured by a 24-h recall method over three consecutive days. Height and body weight were measured, and sleep duration was self-reported. Multivariable mixed linear models were applied to examine the association between trajectories of dietary patterns (using a latent class model) and sleep duration as well as BMI. Four trajectories of a traditional pattern (characterized by rice, meat, and vegetables) and three trajectories of a modern pattern (characterized by fast food, milk, and deep-fried food) were identified. Participants with a high and rapid increase trajectory of the modern dietary pattern had the shortest sleep duration (β = −0.26; 95% CI: −0.40, −0.13). Participants with a high and stable intake of the traditional dietary pattern had the lowest BMI (β = −1.14; 95% CI: −1.41, −0.87), while the participants with a high and rapid increase trajectory of the modern dietary pattern had the highest BMI (β = 0.74; 95% CI: 0.34, 1,15). A rapid increase in the modern dietary pattern is associated with shorter sleep duration and higher BMI.

scholarly journals Dietary behaviours associated with metabolic syndrome: a latent class analysis

2020 ◽  
Author(s):  
Jung Ha Park ◽  
Ju Young Kim ◽  
So Hye Kim ◽  
Jung Hyun Kim ◽  
Young Mi Park ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Body Mass Index ◽  
Latent Class Analysis ◽  
Body Mass ◽  
Emotional Eating ◽  
Latent Class ◽  
Eating Behaviour ◽  
Dietary Behaviour ◽  
Class Analysis ◽  
Dietary Behaviours

Abstract Background Obese individuals have a number of dietary behaviours that might contribute to their weight-related health risks. However, obesity defined solely by body mass index may not reflect the true heterogeneity of the obese population. The aims of this study were to classify the dietary behaviours of obese individuals into subgroups and to explore the relationship between their patterns of dietary behaviour and cardiometabolic risk factors. Methods The study participants were 259 patients who visited an outpatient weight management clinic at a tertiary hospital and underwent a dietary behaviour assessment between January 2014 and February 2019. Dietary behaviours were assessed in three domains with nine categories, including choice of food (frequent eating out, instant/fast/takeaway food), eating behaviour (irregular meals, frequent snacking, including eating at night, emotional eating, and overeating/binge eating), and nutrient intake (high fat/high calorie foods, salty food, and poorly balanced diet). Latent class analysis (LCA) was used to classify the subjects according to these nine categories of dietary behaviour. Associations between latent class and metabolic syndrome were assessed in a logistic regression model. Results Based on their dietary behaviour, the subjects were classified into three LCA-driven classes, including a referent class of healthy eaters (n=118), a class of emotional eaters (n=53), and a class of irregular unhealthy eaters (n=88). Compared with the referent class, emotional eaters had a significantly higher body mass index (beta=3.40, P<0.001) and metabolic syndrome (odds ratio 2.88, 95% confidence interval 1.16–7.13). Conclusions Our finding of three LCA-driven obesity phenotypes could be useful for assessment and management of obesity and metabolic syndrome. The association between higher BMI and metabolic syndrome was stronger in emotional eaters than in healthy eaters and irregular unhealthy eaters. Emotional eaters might benefit from emotional regulation strategies.

scholarly journals Patterns of food parenting practices regarding junk food and sugary drinks among parent-child dyads

2020 ◽  
Author(s):  
Jessica Thomson ◽  
Erin Hennessy ◽  
Alicia Landry ◽  
Melissa Goodman
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Parenting Practices ◽  
Latent Class ◽  
Feeding Practices ◽  
Parental Authority ◽  
Junk Food ◽  
Added Sugars ◽  
Sugary Drinks ◽  
Parent Child

Abstract Background: Children’s food preference and intake patterns are affected by parental child feeding practices. The objective was to determine patterns of food parenting practices regarding junk food and sugary drinks (JS) and investigate their associations with demographic characteristics and dietary intake in a large cohort of parents and their children (12-17 years).Methods: Dyadic survey data from the cross-sectional, internet-based Family Life, Activity, Sun, Health, and Eating Study, conducted in 2014, were analyzed using latent class analysis to identify patterns of use for six JS parenting practices – negative emotions, restriction, monitoring, availability, modeling, and child involvement – based on both parent and child report. Model covariates included self-reported parent sex, body mass index, added sugars intake, and legitimacy of parental authority; and self-reported child age, sex, body mass index percentile, added sugars intake, and legitimacy of parental authority. Results: Based on 1,657 parent-child dyads, five parenting practice patterns were identified – Complete Influencers (28%; reference class), Indifferent Influencers (21%), Negative Influencers (20%), Minimal Influencers (18%), and Disagreeing Influencers (13%). Compared to older child dyads, younger child dyads were less likely to belong to Indifferent and Minimal Influencers (79% and 63% lower odds, respectively). Greater parent added sugars intake increased the odds of belonging to Indifferent and Negative Influencers (4% and 5% higher for every teaspoon increase, respectively) while greater child added sugars intake decreased the odds of belonging to Minimal Influencers (6% lower for every teaspoon increase). Compared to dyads with high agreement, dyads with low parental and child agreement with legitimacy of parental authority regarding JS were 2 to 26 times as likely to belong to one of the other four classes. Conclusions: The study findings suggest that parents utilize distinct patterns of feeding practices regarding JS ranging from use of many practices, use of some practices, to low use of any practice, with differential associations with parent and child intakes of added sugars. Counseling or intervening with parents to use a mix of structure practices to positively influence their child’s and possibly their own intake of sugary snacks and drinks may prove more efficacious than use of coercive control practices.

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