Comparison of methods for deriving phenotypes from incomplete observation data with an application to age at puberty in dairy cattle.

Background: Many phenotypes in animal breeding are derived from incomplete measures, especially if they are challenging or expensive to measure precisely. Examples include time-dependent traits such as reproductive status, or lifespan. Incomplete measures for these traits result in phenotypes that are subject to left-, interval- and right-censoring, where phenotypes are only known to fall below an upper bound, between a lower and upper bound, or above a lower bound respectively.

Estimating Heritabilities and Breeding Values From Censored Phenotypes Using a Data Augmentation Approach.

Time-dependent traits are often subject to censorship, where instead of precise phenotypes, only a lower and/or upper bound can be established for some of the individuals. Censorship reduces the precision of phenotypes but can represent compromise between measurement cost and animal ethics considerations. This compromise is particularly relevant for genetic evaluation because phenotyping initiatives often involve thousands of individuals.

The Relationships of Experiencing Workplace Bullying with Mental Health, Affective Commitment, and Job Satisfaction: Application of the Job Demands Control Model.

There have been very few theoretical models published to understand the relationship between workplace bullying and different outcome variables. Applying the Job Demands Control (JDC) model, this study analyzed workplace bullying alongside 'traditional' job stressors of role overload and low job control to determine the relative associations of each with mental health and wellbeing. These relative associations have not been well documented.

Screening for Depression and Psychological Distress in a Currently Serving Military Population: The Diagnostic Accuracy of the K10 and the PHQ9.

This study is the first to examine the diagnostic accuracy of two depression screening scales-the Kessler Psychological Distress Scale (K10) and the Patient Health Questionnaire (PHQ)-in an entire regular-serving military population. Currently serving Australian Defence Force personnel ( = 24,481) completed the K10 and PHQ9. Then a targeted subsample (i.

Screening for Anger and Sleep Difficulties.

Introduction: Mental health screens are designed to detect individuals at risk of psychological disorders. In the military setting of this study, these disorders were post-traumatic stress disorder (PTSD) and alcohol use. This study extends the literature on deployment-related mental health screening by including measures of sleep difficulties and anger as predictors of postdeployment PTSD and alcohol abuse.

Evaluating the merits of using brief measures of PTSD or general mental health measures in two-stage PTSD screening.

Psychological screening of large numbers of personnel returning from deployments should be as brief as possible without sacrificing the ability to detect individuals who are experiencing serious psychological difficulties. This study focused on screening for posttraumatic stress disorder (PTSD) symptomatology in 421 deployed male members of the Australian Army while they were on deployment and again 3 to 6 months after they returned home. The first aim was to evaluate the performance of the Primary Care--Posttraumatic Stress Disorder Screen (PC-PTSD) and a 4-item version of the 17-item Posttraumatic Stress Disorder Checklist (PCL).