1. Dismiss Notice
  2. Download free Tapatalk for iPhone or Tapatalk for Android for your phone and follow the SDN forums with push notifications.
    Dismiss Notice

help understand which test for which situation (stat, anova, chi etc)

Discussion in 'Step I' started by peter90036, Jun 15, 2008.

  1. peter90036

    peter90036 not out fishing
    7+ Year Member

    Joined:
    Jul 13, 2005
    Messages:
    254
    Likes Received:
    0
    Status:
    Attending Physician
    i cant understand + remember what test to pick for what situation
    anova, chisquare, matched pairs, t tests, etc

    do you have an outline with examples that helps understand all this?
     
  2. Note: SDN Members do not see this ad.

  3. It'sElectric

    10+ Year Member

    Joined:
    Dec 5, 2005
    Messages:
    1,502
    Likes Received:
    6
    Status:
    Attending Physician
    t-test: compares 2 means
    ANOVA: compares 3 or more means
    Chi Square: compares percentages/proportions rather than actual means
     
  4. Instatewaiter

    Instatewaiter But... there's a troponin
    10+ Year Member

    Joined:
    Apr 28, 2006
    Messages:
    5,922
    Likes Received:
    1,855
    Status:
    Attending Physician
    what he said ^
     
  5. Helo

    2+ Year Member

    Joined:
    Jun 25, 2007
    Messages:
    116
    Likes Received:
    0
    d
     
    #4 Helo, Jun 15, 2008
    Last edited: Aug 8, 2010
  6. luhando

    luhando Senior Member
    7+ Year Member

    Joined:
    Apr 26, 2006
    Messages:
    241
    Likes Received:
    0
    Status:
    Medical Student
    the important logical step in differentiating chi-square from the other two is that chi-square deals with qualitative variables (ie disease or no disease) while the other 2 deal with quantitative variables (ie mean BMI).
     
  7. It'sElectric

    10+ Year Member

    Joined:
    Dec 5, 2005
    Messages:
    1,502
    Likes Received:
    6
    Status:
    Attending Physician
    You're correct, but I'm just trying to make it as basic and to the point as possible - which is pretty much how I'm guessing any question on Step 1 referencing either of those 3 items would be. I think "mean" is the opportune word that should set off a red flag in your brain differentiating t-test/anova from chi square.
     
  8. 45408

    45408 aw buddy
    7+ Year Member

    Joined:
    Jun 13, 2004
    Messages:
    16,978
    Likes Received:
    43
    Status:
    Resident [Any Field]
    and the chi-square looks like a % sign to me, so that's how I know what it's for :D
     
  9. peter90036

    peter90036 not out fishing
    7+ Year Member

    Joined:
    Jul 13, 2005
    Messages:
    254
    Likes Received:
    0
    Status:
    Attending Physician
    thanks, this is the stuff i'm looking for :)
     
  10. luhando

    luhando Senior Member
    7+ Year Member

    Joined:
    Apr 26, 2006
    Messages:
    241
    Likes Received:
    0
    Status:
    Medical Student
    haha...most def.

    just trying to add to your wisdom :)
     

Share This Page