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        <r:String xml:lang="sv">YATSS - Tvillingstudie om hälsa och beteende hos unga vuxna</r:String>
        <r:String xml:lang="en">YATSS - Young Adult Twin Study in Sweden</r:String>
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          <r:String xml:lang="en">Karolinska Institutet</r:String>
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        <r:SimpleDate>2024-11-21</r:SimpleDate>
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      <r:Content xml:lang="sv">En tvillingstudie om hälsa och beteende hos unga vuxna tvillingar födda mellan 1985 och 1992. Syftet med studien är att visa hur arv och miljö påverkar sjukdomar. Studien innehåller frågor om mag- och tarmsjukdomar, lungsjukdomar, astma/allergi, artrit, affektiva sjukdomar och symtom, ätstörningar, fibromyalgi, kronisk trötthetssyndrom och kvinnors hälsa. Urvalet bestod av enäggstvillingar samt tvåäggstvillingar av samma eller olika kön inom tvillingparet. Studien genomfördes 2013 och det totala antalet deltagare är 6870 av 16244 inbjudna. 

I samband med YATSS-enkäten fick tvillingarna även en förfrågan om att lämna DNA via salivprov. DNA används för zygositetsbestämning och genotypning. Antalet genotypade tvillingar som deltagit i YATSS är 4000. 

Följande frågeområden ingår i YATSS-studien:
ADHD
Alkohol
Allergi
Autism
Utbrändhet
CES-D - Center for Epidemiologic Studies Depression Scale -11 frågor, Iowa Form
Kroniskt trötthetssyndrom
DCQ - Dysmorphic Concerns Questionnaire (BDD) - 7 frågor, svensk version
Demografi
MDD - Major Depressive Disorder - 31 frågor
Ätstörningar
Utbildning och arbete
Epilepsi
EPQ - Eysenck Personality Questionnaire - 9 frågor
Fibromyalgi
GAD - Generalised Anxiety Disorder - 19 frågor
Huvudvärk
Hoarding - samlarsyndrom - HRS-I (Hoarding Rating Scale-Interview)- 4 frågor av 5
IBS - Irritable Bowel Syndrome
Droger
Medicinsk historik
Menstruation och reproduktionshistorik
OA &amp; RA - Artros och Reumatoid artrit
OCD - Obsessive Cumpulsive Disorder - 12 frågor
Fysisk aktivitet
Prestation
Psykos
Reflux
Sexuellt riskbeteende
SIL - sjukskrivning
Sömn
Rökning och snusning
Trauma
Urinvägsinfektion
Socioekonomiskt index - klassifikation främst baserat på uppgifter om individers yrken</r:Content>
      <r:Content xml:lang="en">A twin study on health and behavior in young adult twins born between 1985 and 1992 was conducted. The aim of the study was to examine how genetic and environmental factors influences diseases. The study included questions about gastrointestinal disorders, pulmonary disease, asthma/allergy, arthritis, affective disorders and symptoms, eating disorders , fibromyalgia, chronic fatigue syndrome and women's health. The sample consisted of both identical (monozygotic) and fraternal (dizygotic) twins, including same-sex and opposite-sex pairs. Conducted in 2013, the study had a total of 6,870 participants out of 16,244 invited.

Participants were also asked to provide DNA samples via saliva for zygosity determination and genotyping. A total of 4,000 twins who participated in the YATSS survey were genotyped.

The YATSS study includes the following question areas:
ADHD
Alcohol
Allergy
Autism
Burnout
CES-D - Center for Epidemiologic Studies Depression Scale -11 items, Iowa Form
Chronic fatigue syndrome
DCQ - Dysmorphic Concerns Questionnaire (BDD) - 7 items, swedish version
Demography
MDD - Major Depressive Disorder - 31 items
Eatingdisorders
Education and occupation
Epilepsy
EPQ - Eysenck Personality Questionnaire - 9 items
Fibromyalgia
GAD - Generalised Anxiety Disorder - 19 items
Headache
Hoarding - HRS-I (Hoarding Rating Scale-Interview) - 4 out of 5 items
IBS - Irritable Bowel Syndrome
Illicit drugs
Medical history
Menstruation och reproductive history
OA &amp; RA - Osteoarthritis and Rheumatoid arthritis
OCD - Obsessive Cumpulsive Disorder - 12 items
Physical activity
Performance
Psychosis
Reflux
Sexual risk behavior
SIL - sick leave
Sleep
Smoking and snuff use
Trauma
Urinary tract infection
Socio-economic index - classifation mainly based on information about individuals profession</r:Content>
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