Sökning: "missingness mechanism"

Hittade 3 uppsatser innehållade orden missingness mechanism.

  1. 1. An Empirical Investigation of The Effect of Proxy Response and The Merits of Its Remedial Measures

    Magister-uppsats, Högskolan Dalarna/Institutionen för information och teknik

    Författare :Charles Edward Okon; Randi Kalanika Assalaarachchi; [2023]
    Nyckelord :missing data; proxy response; missingness mechanism; error-in-variable; logistic regression; Monte-Carlo simulation; missing at random; complete case analysis; proxy substitution; multiple imputation; inverse probability treatment weighting;

    Sammanfattning : In the event of missing data, substitution of data from proxy sources are usually considered a very useful alternative when available to avoid the problem of missingness. Nonetheless, research has also shown that this approach often induces “response bias”. LÄS MER

  3. 2. Why do some civilian lives matter more than others? Exploring how the quality, timeliness and consistency of data on civilian harm affects the conduct of hostilities for civilians caught in conflict.

    Magister-uppsats, Uppsala universitet/Institutionen för freds- och konfliktforskning

    Författare :Amra Lee; [2019]
    Nyckelord :civilian harm; civilian casualties; missingness; protection of civilians; conduct of hostilities; armed conflict; Afghanistan; Iraq; Syria; Yemen; Middle East; Asia;

    Sammanfattning : Normatively, protecting civilians from the conduct of hostilities is grounded in the Geneva Conventions and the UN Security Council protection of civilian agenda, both of which celebrate their 70 and 20 year anniversaries in 2019. Previous research focusses heavily on protection of civilians through peacekeeping whereas this research focuses on ‘non-armed’ approaches to enhancing civilian protection in conflict. LÄS MER

  4. 3. Effect of Years in Retirement on Cognition, Considering Non-ignorable Missingness in Outcome

    Kandidat-uppsats, Umeå universitet/Institutionen för matematik och matematisk statistik

    Författare :Therese Lithner; [2016]
    Nyckelord :;

    Sammanfattning : Introduction: Research has suggested a positive association between cognitive decline and years in retirement. However, most prior studies are based on data with non-ignorable missingness in the response variable and performed with standard regression methods, requiring a missing at random assumption of the response. LÄS MER