scholarly journals The geometry of mortality change: Convex hulls for demographic analysis

2019 ◽  
Vol 7 (1) ◽  
pp. 27-70
Author(s):  
Audrey F. Lai ◽  
Andrew Noymer ◽  
Tsuio Tai
Keyword(s):  
Sex Differences ◽  
Population Studies ◽  
Demographic Data ◽  
Adult Mortality ◽  
Convex Hulls ◽  
Mortality Data ◽  
Outlier Identification ◽  
Cohort Differences ◽  
Potential Applicability ◽  
The Relationship

We introduce convex hulls as a data visualization and analytic tool for demography. Convex hulls are widely used in computer science, and have been applied in fields such as ecology, but are heretofore underutilized in population studies. We briefly discuss convex hulls, then we show how they may profitably be applied to demography. We do this through three examples, drawn from the relationship between child and adult mortality (5q0 and 45q15 in life table notation). The three examples are: (i) sex differences in mortality; (ii) period and cohort differences and (iii) outlier identification. Convex hulls can be useful in robust compilation of demographic databases. Moreover, the gap/lag framework for sex differences or period/cohort differences is more complex when mortality data are arrayed by two components as opposed to a unidimensional measure such as life expectancy. Our examples show how, in certain cases, convex hulls can identify patterns in demographic data more readily than other techniques. The potential applicability of convex hulls in population studies goes beyond mortality.

scholarly journals The geometry of mortality change: Convex hulls for demographic analysis

2017 ◽  
Author(s):  
Audrey F. Lai ◽  
Andrew Noymer ◽  
Tsuio Tai
Keyword(s):  
Sex Differences ◽  
Population Studies ◽  
Demographic Data ◽  
Convex Hulls ◽  
Mortality Data ◽  
Outlier Identification ◽  
Cohort Differences ◽  
Mortality Change ◽  
Potential Applicability ◽  
The Relationship

We introduce convex hulls as a data visualization and analytic tool for demography. Convex hulls are widely used in computer science, and have been applied in fields such as ecology, but are heretofore underutilized in population studies. We briefly discuss convex hulls, then we show how they may profitably be applied to demography. We do this through three examples, drawn from the relationship between child mortality and adult survivorship (5q0 and 45p15 in life table notation). The three examples are: (i) sex differences in mortality; (ii) period and cohort differences and (iii) outlier identification. Convex hulls can be useful in robust compilation of demographic databases. Moreover, the gap/lag framework for sex differences or period/cohort differences is more complex when mortality data are arrayed by two components as opposed to a unidimensional measure such as life expectancy. Our examples show how, in certain cases, convex hulls can identify patterns in demographic data more readily than other techniques. The potential applicability of convex hulls in population studies goes beyond mortality.

scholarly journals Self-reported disability in relation to mortality in rural Malawi: a longitudinal study of over 16 000 adults

BMJ Open ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. e034802
Author(s):  
Josephine E Prynn ◽  
Albert Dube ◽  
Joseph Mkandawire ◽  
Olivier Koole ◽  
Steffen Geis ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Adult Mortality ◽  
Secondary Outcome ◽  
Mortality Data ◽  
Surveillance Site ◽  
All Cause Mortality ◽  
Obesity Hypertension ◽  
The Relationship ◽  
Experienced Difficulty ◽  
Improve Access

ObjectivesWe investigated whether self-reported disability was associated with mortality in adults in rural Malawi.SettingKaronga Health and Demographic Surveillance Site (HDSS), Northern Malawi.ParticipantsAll adults aged 18 and over residing in the HDSS were eligible to participate. During annual censuses in 2014 and 2015, participants were asked if they experienced difficulty in any of six functional domains and were classified as having disabilities if they reported ‘a lot of difficulty’ or ‘can’t do at all’ in any domain. Mortality data were collected until 31 December 2017. 16 748 participants (10 153 women and 6595 men) were followed up for a median of 29 months.Primary and secondary outcome measuresWe used Poisson regression to examine the relationship between disability and all-cause mortality adjusting for confounders. We assessed whether this relationship altered in the context of obesity, hypertension, diabetes or HIV. We also evaluated whether mortality from non-communicable diseases (NCD) was higher among people who had reported disability, as determined by verbal autopsy.ResultsAt baseline, 7.6% reported a disability and the overall adult mortality rate was 9.1/1000 person-years. Adults reporting disability had an all-cause mortality rate 2.70 times higher than those without, and mortality rate from NCDs 2.33 times higher than those without.ConclusionsSelf-reported disability predicts mortality at all adult ages in rural Malawi. Interventions to improve access to healthcare and other services are needed.

The Relationship of Compliance with Coping Strategies and Self-Esteem

2003 ◽  
Vol 19 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Gisli H. Gudjonsson ◽  
Jon Fridrik Sigurdsson
Keyword(s):  
Sex Differences ◽  
Coping Strategies ◽  
Multiple Regression ◽  
Sex Difference ◽  
Test Scores ◽  
Self Esteem ◽  
Stressful Situation ◽  
Men And Women ◽  
Relationship Of ◽  
The Relationship

Summary: The Gudjonsson Compliance Scale (GCS), the COPE Scale, and the Rosenberg Self-Esteem Scale were administered to 212 men and 212 women. Multiple regression of the test scores showed that low self-esteem and denial coping were the best predictors of compliance in both men and women. Significant sex differences emerged on all three scales, with women having lower self-esteem than men, being more compliant, and using different coping strategies when confronted with a stressful situation. The sex difference in compliance was mediated by differences in self-esteem between men and women.

Reflections on Local Population Studies and Social Science History

2018 ◽  
pp. 43-51
Author(s):  
Osamu Saito
Keyword(s):  
Social Science ◽  
Population Studies ◽  
Local Population ◽  
Local Source ◽  
Personal Reflection ◽  
Social Scientists ◽  
Science History ◽  
Social Science History ◽  
The Relationship ◽  
Source Materials

This personal reflection of more than 40 years' work on the supply of labour in a household context discusses the relationship between social science history (the application to historical phenomena of the tools developed by social scientists) and local population studies. The paper concludes that historians working on local source materials can give something new back to social scientists and social science historians, urging them to remake their tools.

165 Sex differences in the relationship between self-reported sleep quality and frailty in South Florida older adult outpatients

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A67-A67
Author(s):  
Sonya Kaur ◽  
Katalina McInerney ◽  
Mitchell Slugh ◽  
Annelly Bure ◽  
Marina Sarno ◽  
...  
Keyword(s):  
Older Adults ◽  
Sex Differences ◽  
Sleep Quality ◽  
Grip Strength ◽  
Brain Research ◽  
Functional Independence ◽  
South Florida ◽  
Left Hand ◽  
Depression Status ◽  
The Relationship

Abstract Introduction Frailty, a multidimensional construct of decreased reserve is an important predictor of functional independence and quality of life in older adults. There is a growing body of evidence highlighting reduced sleep efficiency and sleep duration predicts frailty in older adults. However, the sex differences in these relationships have been understudied. Methods 253 participants (163) ranging in age from 50-92 years (mean= 67.59 years, S.D.= 9.22 years), underwent frailty assessment and completed the Pittsburgh Sleep Quality Index (PSQI) and the Epworth Sleepiness Scale (ESS). Statistical moderation was assessed using nonparametric bootstrapping. All models statistically controlled for age, education and depression status. Results Higher scores on the PSQI predicted higher levels of fatigue (β=1.87, 95% CI= 0.48-3.27) and higher grip strength with the left hand (β= 0.81, 95% CI= 0.85-1.53). These relationships were significantly moderated by sex (β=-0.77, p=0.05 & β=-0.52, p=0.01). Specifically, high scores on the PSQI predicted more fatigue stronger grip strength in men (β=1.11, 95% CI=0.41-1.81) and weaker grip strength in women (β=-0.25, 95% CI=-0.51--0.02). There was no association between scores on the ESS and any of the frailty measures. Conclusion The relationships between PSQI scores and measures of fatigue and grip strength were statistically moderated by sex. These differences are not explained by sex differences in overall sleep quality or baseline frailty. This is consistent with the literature emphasizing sex differences in the effects of risk/lifestyle factors. It is possible that the relationship between sleep quality and frailty is altered by additional hormonal factors and warrant further investigation. Support (if any) This research was supported by the Evelyn F. McKnight Brain Research Foundation

scholarly journals Attitude toward Aging Mediates the Relationship between Personality and Mental Health in Older Adults

Healthcare ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 594
Author(s):  
Teshome Sirak Bedaso ◽  
Buxin Han
Keyword(s):  
Mental Health ◽  
Older Adults ◽  
Life Satisfaction ◽  
Demographic Data ◽  
Cross Sectional Study ◽  
Personality Factors ◽  
Health Issues ◽  
Cross Sectional ◽  
Potential Mediator ◽  
The Relationship

This study aimed to examine attitude toward aging as a potential mediator of the relationship between personality factors and mental health in terms of depression and life satisfaction among older adults. A cross-sectional study was conducted with 438 Ethiopian elderly individuals aged 60 to 69. The results of the regression-based path analysis showed that after adjusting for demographic data, the relationship between agreeableness and depression in older adults was partially mediated by attitude toward aging. Likewise, attitude toward physical change due to aging and psychological growth subscales jointly mediated the correlation between neuroticism and depression. However, a significant direct path between neuroticism and depression persisted. On the contrary, openness had no significant direct association with depression apart from an indirect through psychosocial loss. The link between life satisfaction and agreeableness as well as openness to experience were partially mediated by psychosocial loss. Therefore, a person’s attitude toward aging and personality characteristics should be taken into consideration while designing interventions for managing mental health issues among older adults.

scholarly journals Elucidating the Relationship Between Insomnia, Sex, and Cardiovascular Disease

2020 ◽  
Vol 4 ◽  
pp. 247028972098001
Author(s):  
Rebecca Leeds ◽  
Ari Shechter ◽  
Carmela Alcantara ◽  
Brooke Aggarwal ◽  
John Usseglio ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Sex Differences ◽  
Cardiovascular Health ◽  
Future Research ◽  
Sex And Gender ◽  
Men And Women ◽  
Sex Research ◽  
And Gender ◽  
The Relationship ◽  
Cvd Mortality

Sex differences in cardiovascular disease (CVD) mortality have been attributed to differences in pathophysiology between men and women and to disparities in CVD management that disproportionately affect women compared to men. Similarly, there has been investigation of differences in the prevalence and presentation of insomnia attributable to sex. Few studies have examined how sex and insomnia interact to influence CVD outcomes, however. In this review, we summarize the literature on sex-specific differences in the prevalence and presentation of insomnia as well as existing research regarding the relationship between insomnia and CVD outcomes as it pertains to sex. Research to date indicate that women are more likely to have insomnia than men, and there appear to be differential associations in the relation between insomnia and CVD by sex. We posit potential mechanisms of the relationship between sex, insomnia and CVD, discuss gaps in the existing literature, and provide commentary on future research needed in this area. Unraveling the complex relations between sex, insomnia, and CVD may help to explain sex-specific differences in CVD, and identify sex-specific strategies for promotion of cardiovascular health. Throughout this review, terms “men” and “women” are used as they are in the source literature, which does not differentiate between sex and gender. The implications of this are also discussed.

scholarly journals Parkinson’s Disease and the COVID-19 Pandemic

2021 ◽  
pp. 1-14
Author(s):  
Conor Fearon ◽  
Alfonso Fasano
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Indirect Effects ◽  
Mortality Data ◽  
Contributing Factors ◽  
Scientific Rigor ◽  
The Impact ◽  
The Relationship ◽  
Non Motor Symptoms ◽  
Convincing Data

Studies focusing on the relationship between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), coronavirus disease 2019 (COVID-19), and Parkinson’s disease (PD) have provided conflicting results. We review the literature to investigate: 1) Are PD patients at higher risk for contracting COVID-19 and are there specific contributing factors to that risk? 2) How does COVID-19 affect PD symptoms? 3) How does COVID-19 present in PD patients? 4) What are the outcomes in PD patients who contract COVID-19? 5) What is the impact of COVID-19 on PD care? 6) Does COVID-19 increase the risk of developing PD? A literature search was performed from 1979 to 2020 using the terms: ‘Parkinson’s disease’ and ‘parkinsonism’ combined with: ‘COVID-19’; ‘SARS-CoV-2’ and ‘coronavirus’. It does not appear that PD is a specific risk factor for COVID-19. There is evidence for direct/indirect effects of SARS-CoV-2 on motor/non-motor symptoms of PD. Although many PD patients present with typical COVID-19 symptoms, some present atypically with isolated worsening of parkinsonian symptoms, requiring increased anti-PD therapy and having worse outcomes. Mortality data on PD patients with COVID-19 is inconclusive (ranging from 5.2%to 100%). Patients with advanced PD appear to be particularly vulnerable. Single cases of acute hypokinetic-rigid syndrome have been described but no other convincing data has been reported. The rapidity with which COVID-19 has swept across the globe has favored the proliferation of studies which lack scientific rigor and the PD literature has not been immune. A coordinated effort is required to assimilate data and answer these questions in larger PD cohorts.

Sign in / Sign up

Export Citation Format

Share Document