Sökning: "nonresponse bias"
Hittade 4 uppsatser innehållade orden nonresponse bias.
1. Investigating Industry Bias in Swedish Polling from 2010 to 2022
Kandidat-uppsats, Uppsala universitet/Statistiska institutionenSammanfattning : Industry bias is the bias associated with polling estimates, and that is caused by systematic errors. We aim to test for its presence in Swedish political polling from 2010 to 2022 and simulate industry bias as a consequence of nonresponse bias. LÄS MER
2. Auxiliary variables a weight against nonresponse bias : A simulation study
Kandidat-uppsats, Stockholms universitet/Statistiska institutionenSammanfattning : Today’s surveys face a growing problem with increasing nonresponse. The increase in nonresponse rate causes a need for better and more effective ways to reduce the nonresponse bias. There are three major scientific orientation of today’s research dealing with nonresponse. LÄS MER
3. Livskvalitet efter intensivvård : Upplevelser ur patientens perspektiv, en deskriptiv litteraturstudie
Kandidat-uppsats, Avdelningen för hälso- och vårdvetenskapSammanfattning : Syftet med litteraturstudien var att beskriva hur patienter som vårdats på IVA upplever sin livskvalitet efter att ha kommit hem. Vidare var syftet att bedöma och beskriva kvaliteten på de ingående artiklarna utifrån den metodologiska aspekten urval och bortfall. Litteraturstudien hade en deskriptiv design med kvalitativ ansats. LÄS MER
4. Missing data in health economic evaluations: handling the associated uncertainty
D-uppsats, Handelshögskolan i Stockholm/Institutionen för nationalekonomiSammanfattning : The purpose of this thesis is to explore the problems associated with missing data in studies included in health economic evaluations in order to promote validity and improve the base for decision making. The literature study focus on adjustment methods from a realized dataset with individual data, but also covers methods to prepare and prevent the problem. LÄS MER