Length-Of-Service / Survival Profiles Methodology For The Royal Australian Navy
NAVAL POSTGRADUATE SCHOOL MONTEREY CA MONTEREY United States
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Using transactional data from Royal Australian Navy RAN HR systems from 2002 to 2018, this thesis produces length-of-servicesurvival profiles for the RAN Officers and Sailors with a focus on testing for heterogeneity in survival profiles along their characteristic dimensions of rank, workforce categoryworkgroup, gender, age group and calendar year of enlistment cohort. These survival profiles will inform the RAN about the probability of a member remaining in the service at any point in their period of service. The dataset contained 21,820 periods of service comprising enlistment and separation events or enlistment and final population snapshot events and represented 21,495 RAN individuals. I determined that all analyzed characteristics were important for predicting RAN separation behavior. In particular, females were significantly more likely to separate than males in the early years up to 10 years of service. Sailors were more likely to separate than Officers. Across the whole RAN, the first year separation rate is 10.3 percent, which represents the initial matching period for new recruits. Two methodologies for preparing survival profiles were compared and validated. Kaplan-Meier was found to be the best for single characteristic variable models, and the Cox proportional hazards model was found to be the best for multiple variable specifications.
- Personnel Management and Labor Relations
- Military Forces and Organizations