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[{"key": "dc.contributor.advisor", "value": "Karvanen, Juha", "language": null, "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Hirvonen, Elli", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2017-06-19T10:58:37Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2017-06-19T10:58:37Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2017", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1703915", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/54554", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Puuttuva tieto on ongelma terveystutkimuksissa, koska tutkimukseen osallistujat ja ei-osallistujat usein eroavat toisistaan. Puuttuvuuden mallintaminen on t\u00e4rke\u00e4\u00e4, jotta tuloksia pystytt\u00e4isiin korjaamaan ja jatkossa ottamaan mallinnettu puuttuvuus paremmin huomioon tutkimusta suunnitellessa. My\u00f6s Kansallinen FINRISKI-tutkimus k\u00e4rsii puuttuvuudesta, sill\u00e4 tutkimuksen osallistumisprosentti on laskenut jatkuvasti. Tutkimus on Terveyden ja hyvinvoinnin laitoksen v\u00e4est\u00f6tutkimussarja, jonka tavoitteena on seurata kansantauteja ja niiden riskitekij\u00f6it\u00e4 Suomessa sek\u00e4 tarkkailla suomalaisten terveydentilaa. T\u00e4ss\u00e4 ty\u00f6ss\u00e4 pyrit\u00e4\u00e4n mallintamaan Kansallisen FINRISKI-tutkimuksen puuttuvuus tarkastelemalla, kuinka osallistumisaktiivisuus on muuttunut vuosien edetess\u00e4 miehill\u00e4 ja naisilla eri tutkimusalueilla.\n\nKun tarkastellaan osallistumisaktiivisuuden muuttumista eri ihmisill\u00e4 ajan kuluessa, ollaan kiinnostuneita aikamuuttujista ik\u00e4, tutkimusvuosi ja syntym\u00e4vuosi. N\u00e4m\u00e4 aikamuuttujat ovat matemaattisesti riippuvia toisistaan, joten niiden lis\u00e4\u00e4minen malliin yht\u00e4 aikaa on hankalaa. Ik\u00e4-periodi-kohortti -analyysi pyrkii t\u00e4h\u00e4n, mutta vaatii vahvoja oletuksia, jotka harvoin t\u00e4yttyv\u00e4t. Periodi kuvaa analyysiss\u00e4 tutkimusvuotta ja kohortti syntym\u00e4vuotta. T\u00e4ss\u00e4 tutkielmassa ik\u00e4-periodi-kohortti -analyysi toteutetaan osissa siten, ett\u00e4 tehd\u00e4\u00e4n kolme mallia ja jokaisessa mallissa on aina kaksi aikamuuttujaa kerrallaan mukana. T\u00e4m\u00e4 voidaan tehd\u00e4, sill\u00e4 kun kaksi aikamuuttujaa tiedet\u00e4\u00e4n, kolmas voidaan laskea kahden muun avulla. N\u00e4in p\u00e4\u00e4st\u00e4\u00e4n eroon kolmen aikamuuttujan vaikutuksien identifioituvuusongelmasta.\n\nMallien sovittamiseen k\u00e4ytet\u00e4\u00e4n additiivista logistista regressiota, joka kuuluu yleistettyihin additiivisiin malleihin. Yleistetyt additiiviset mallit ovat yleistettyjen lineaaristen mallien laajennus, miss\u00e4 lineaariset termit korvataan tasoittavien funktioiden summalla, jolloin ep\u00e4lineaarisia termej\u00e4 voidaan sovittaa joustavammin. Mallit esitell\u00e4\u00e4n graafisesti ja jokainen malli tulkitaan erikseen. Tuloksiksi saatiin mielenkiintoisia eroja miesten ja naisten, eri ik\u00e4isten tutkittavien sek\u00e4 tutkimusvuosien ja -alueiden v\u00e4lill\u00e4.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Elli Hirvonen (elmahirv) on 2017-06-19 10:58:37.441703. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2017-06-19T10:58:37Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201706192945.pdf: 815069 bytes, checksum: 26f4466416b22030caa3e7f2aade37c1 (MD5)\nlicense.html: 4805 bytes, checksum: 7da01d883c281fc87bfab5b016dae4d7 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2017-06-19T10:58:37Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201706192945.pdf: 815069 bytes, checksum: 26f4466416b22030caa3e7f2aade37c1 (MD5)\nlicense.html: 4805 bytes, checksum: 7da01d883c281fc87bfab5b016dae4d7 (MD5)\n Previous issue date: 2017", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (61 sivua)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "ik\u00e4-periodi-kohortti -analyysi", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "yleistetyt additiiviset mallit", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "tasoitusfunktio", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "kolmannen asteen tasoitusspline", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "takaisinsovitusalgoritmi", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "lokaali pisteytysalgoritmi", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "yleistetty logistinen regressio", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "FINRISKI -tutkimus", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Puuttuvuuden mallintaminen FINRISKI-tutkimuksessa", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201706192945", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Matematiikan ja tilastotieteen laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Mathematics and Statistics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Tilastotiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Statistics", "language": "en", "element": "subject", "qualifier": 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