Anxiety Prevalence in the Population
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Questions and Answers

how common is anxiety in the population

  • 33.7% (correct)
  • 36.5%
  • 37%
  • 40%

    • what is the co morbidity levels for anxiety

  • 60%
  • 54-57%
  • 85-89%
  • 63-67% (correct)

    • how long does an episode last - MDD? how many episodes do ppl have?

  • 6months, 5 episodes
  • 8months and 3 episodes
  • 8 months and 4 episodes (correct)
  • 6 months and 8 episodes

    • what are the chance re occurrence of episodes MDD?

    <p>1 year 25% , 2 year 40%, 5 years 70%</p> Signup and view all the answers

    what is the % of unipolar depression in population?

    <p>8%</p> Signup and view all the answers

    what % does not respond to unipolar depression ?

    <p>40%</p> Signup and view all the answers

    what is age of onset for unipolar depression ?

    <p>16-25%</p> Signup and view all the answers

    bipolar 1 has an age onset of ___ , age of onset for bipolar 2 is ____?

    <p>18, 22</p> Signup and view all the answers

    heritability of unipolar depression?

    <p>20-45%</p> Signup and view all the answers

    concordance of twins in unipolar depression?

    <p>MZ 47% , DZ 20%</p> Signup and view all the answers

    Study Notes

    Anxiety in the Population

    • Anxiety disorders affect approximately 31% of the adult population at some point in their lives.
    • The prevalence of anxiety is higher in women than in men.

    Comorbidity Levels for Anxiety

    • Anxiety often coexists with other mental health disorders, including depression, substance use disorders, and personality disorders.
    • Around 50% of individuals with depression also experience an anxiety disorder.

    Major Depressive Disorder (MDD) Episodes

    • A Major Depressive Episode (MDE) can last from several weeks to several months, with an average duration of about 6-8 months if untreated.
    • Individuals may experience multiple episodes of MDD throughout their lives, with the average being 2-4 episodes.

    Recurrence of MDD Episodes

    • Approximately 50-60% of individuals who have one episode of MDD will experience at least one additional episode.
    • After multiple episodes, the likelihood of recurrence increases significantly.

    Unipolar Depression in the Population

    • The lifetime prevalence of unipolar depression is estimated to be around 7-12% among adults.
    • Nearly 30-40% of individuals with unipolar depression may not respond to first-line treatment options.

    Age of Onset for Unipolar Depression

    • The average age of onset for unipolar depression typically occurs in the late teens to early 20s.

    Bipolar Disorder Onset

    • Bipolar I disorder usually has an onset around age 18.
    • Bipolar II disorder generally has a later onset, around age 22.

    Heritability of Unipolar Depression

    • Unipolar depression has a heritability estimate of about 37%, indicating a genetic component to its occurrence.

    Twin Concordance in Unipolar Depression

    • The concordance rate for unipolar depression in identical twins is approximately 40-50%, while it is about 10-20% in fraternal twins.

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    Description

    Test your knowledge about the prevalence of anxiety in the general population. Learn about the statistics and trends of anxiety disorders.

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