Sökning: "latent growth curve models"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden latent growth curve models.

1. 1. Intelligence and models for cognitive development

   Författare :Linda Wänström; Daniel Thorburn; Gösta Hägglund; Dag Sörbom; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; intelligence; cognitive development; sample size; multilevel models; latent growth curve models; Statistics; Statistik; statistik; Statistics;

   Sammanfattning : This dissertation focuses on cognitive development. In papers I and II, I study a special model, the second order latent growth curve model, that can be used to study cognitive development. Algebraic expressions for the variance of the estimation of slope differences are given. LÄS MER

3. 2. Stochastic epidemic models in heterogeneous communities

   Författare :David Lindenstrand; Tom Britton; Åke Svensson; Denis Mollison; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical Statistics; matematisk statistik;

   Sammanfattning : The aim of Paper I is to explain where randomness should be taken into account when modelling epidemic spread, i.e. when a stochastic model is preferable to a deterministic counterpart. LÄS MER

4. 3. Body mass index, cognitive ability, and dementia : prospective associations and methodological issues in late life

   Författare :Anna Dahl; Stig Berg; Bo Malmberg; Linda Hassing; Eleonor Fransson; Sven Nilsson; Åke Wahlin; Jönköping University; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; aging; body mass index; cognition; dementia; epidemiology; longitudinal; population-based; prospective; Older people and ageing; Äldre och åldrande;

   Sammanfattning : The aims of the present study were to investigate the association between overweight and cognitive ability and dementia, and to evaluate the usefulness of self-reported body mass index (BMI) in late life and various data sources commonly used in epidemiological studies to identify persons with dementia. Data were drawn from three population-based studies: the Swedish Adoption/Twin Study of Aging (SATSA), Aging in Women and Men: A Longitudinal Study of Gender Differences in Health Behaviour and Health among Elderly (the Gender Study), and the Finnish Lieto Study. LÄS MER

5. 4. Birth cohort differences in cognitive aging: Secular trends in cognitive functioning and decline over 30 years in three population-based Swedish samples

   Författare :Peter Karlsson; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Aging; cardiovascular risk factors; cognitive decline; cohort differences; fluid and crystallized abilities; Flynn effect; longitudinal;

   Sammanfattning : The overarching aim of this thesis was to investigate birth cohort differences in level of cognitive functioning and change in later life in three population-based representative samples drawn from the Gerontological and Geriatric Population Studies in Gothenburg (H70), Sweden. We used data from cohorts, born in 1901-02, 1906-07, and 1930, measured at ages 70, 75, and 79 on the same cognitive measures. LÄS MER

7. 5. A longitudinal approach to social exclusion in Sweden

   Författare :Miia Bask; Björn Halleröd; David Gordon; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; family; immigrant; longitudinal analysis; social exclusion; Sweden; welfare problem; Sociology; Sociologi;

   Sammanfattning : This thesis consists of four papers, and has as its central theme the accumulation of welfare problems and social exclusion. We use Swedish data and all analyses are based on individuals of working age. LÄS MER