Essays about: "Cox model"

Showing result 11 - 15 of 88 essays containing the words Cox model.

  1. 11. Influences of genetically predicted and attained education on geographical mobility and their association with mortality : A cohort study investigating the influence of genetic predisposition to higher education as well as attained education on geographic mobility and differences in mortality risk in Swedish twins born 1926-1955

    University essay from Stockholms universitet/Institutionen för folkhälsovetenskap

    Author : Elsa Ojalehto; [2022]
    Keywords : Polygenic score; Attained education; Geographic mobility; Mortality; Socioeconomic status;

    Abstract : Introduction Research show that both educational attainment and genetic propensity to education (PGSEdu) can be associated with geographic mobility and that individuals living in more deprived areas tend to have poorer health while those living in more advantaged places tend to have better health. In this thesis, the aim was to study how polygenic scores for education and attained education influence and differ by geographic mobility, and how they influence the association between geographic mobility and mortality. READ MORE

  3. 12. Statistical analysis of corrective and preventive maintenance in medical equipment

    University essay from Umeå universitet/Institutionen för matematik och matematisk statistik

    Author : Linn von Schewelov; [2022]
    Keywords : Correlation Analysis; Regression Analysis; Survival Analysis; Medical equipment; Corrective Maintenance; Preventive Maintenance; Least squares; Cox Proportional Hazards model;

    Abstract :  Maintenance of medical equipment plays an important role in ensuring the healthcare quality so that the care can be conducted with minimal risk. Preventive maintenance is performed to maintain the equipment in satisfactory operating condition, while corrective maintenance is made when there is an unpredicted maintenance requirement. READ MORE

  4. 13. Investigating the relationship between dementia and cognitive tests performance : do better scores on cognitive tests relate to a lower risk of developing dementia?

    University essay from Umeå universitet/Statistik

    Author : Emma Kwon; Markus Lindvall; [2022]
    Keywords : ;

    Abstract : In 2021, dementia was the seventh leading cause of death among all diseases in the world according to the World Health Organization (2021). Dementia is an overall medical term indicating deteriorated brain health associated with loss of memory, cognitive abnormality and difficulties in daily activities. There is no medical cure for dementia yet. READ MORE

  5. 14. Factors related to vertical root fractures in teeth restored with prosthetic single crowns: A retrospective clinical study

    University essay from Malmö universitet/Odontologiska fakulteten (OD)

    Author : Sham Al-Hotheiry; Mustafa Spahic; [2022]
    Keywords : Vertical root fracture;

    Abstract : Purpose The aim of the present retrospective clinical study was to investigate the factors that could be associated with the occurrence of vertical root fractures regarding tooth-supported single crowns (VRF). Materials and methods This dental record-based retrospective study included patients treated with tooth-supported single crowns during from October 2008 to December 2010 at the Faculty of Odontology, Malmö University, Sweden. READ MORE

  6. 15. A survival analysis on endurance tests of chainsaws and power cutter components at Husqvarna Group AB

    University essay from Lunds universitet/Matematisk statistik

    Author : Johannes Lindvall; [2022]
    Keywords : Mathematics and Statistics;

    Abstract : Due to the steadily growing world chainsaw market and the market’s relative competitiveness, high performing chainsaws are important for Husqvarna Group AB to remain competitive. In the development phase a large number of endurance tests are run to evaluate the product’s performance. READ MORE