Outcome measure

Question 1

what is the definition of outcome measure?

Answer 1

a test, measurement or scale which measures a particular attribute of interest to the patient or clinician, which can be influenced by an intervention

Question 2

why do we have outcome measures?

Answer 2

• quantify patient’s progress
• monitor progress of treatment
• facilitate clinical decision making
• acquire baseline data to set a goal
• determine efficiacy of a treatment

Question 3

how do we choose the appropriate outcome measure?

Answer 3

• we need to first see who is being measured, and what is being measured?
• condition-specific?
• site-specific?
• dimension-specific?

Question 4

what are the 4 main categories in which the appropriate outcome measure is selected based on?

Answer 4

• body structure impairments
• body function impairments
• activity limitation
• participation restriction

Question 5

what defines a reliable outcome measure?

Answer 5

outcome measures which provide similar values upon repeated administrations in unchanged patients

Question 6

what are the 3 types of reliability?

Answer 6

• intra-rater reliability
• inter-rater reliability
• test-retest reliability

Question 7

what is intra-rater reliability?

Answer 7

extent to which measurements taken by the same person are consistent

Question 8

what is inter-rater reliability?

Answer 8

the extent to which measurements taken by different people are similar

Question 9

what is test-retest reliability?

Answer 9

the extent to which patients who complete their own measurements provide similar results

Question 10

what defines a valid outcome measure?

Answer 10

• a valid outcome measure would be determined by whether the outcome measure assess what it’s supposed to assess

Question 11

what are the 4 types of validity?

Answer 11

• face validity
• content validity
• criterion validity
• construct validity

Question 12

what is face validity?

Answer 12

on the surface, does the measure look valid?

Question 13

what is content validity?

Answer 13

for measures with more than 1 component, are all the contents that we want to measure present?

Question 14

what is criterion validity?

Answer 14

does the measure compare against our criteria/gold standard measure

Question 15

what is construct validity?

Answer 15

does the measure behave as we expect it to, with other measures and variables

Question 16

what are the 3 types of construct validity?

Answer 16

• convergent validity (does our measure relate to similar measures?)
• divergent validity (does our measure not relate to different measures?)
• know-groups validity (can our measure tell different groups apart?)