ROM Validity & Reliability Flashcards
1
Q
Define validity
A
- refers to how well it represents the true value of the variable of interest & how well it can be used for a specific purpose
2
Q
Define face validity
A
- indicates that the instrument generally appears to measure what it is intended to measure
3
Q
Define content validity
A
- determined by judging whether an instrument adequately measures & represents the domain of content-the substance- of the variable if interest
4
Q
Define criterion related validity
A
- justifies validity of the measuring instrument by comparing measurements made with the instrument to a well established gold standard of measurement
5
Q
Define construct validity
A
- ability of an instrument to measure an abstract concept or to be used to make an inferred interpretation
6
Q
Define reliability
A
- amount of consistency between successive measurements of the same variable on the same individual under the same conditions
7
Q
What are the 3 main sources of variation in clinical measurements
A
- true biological variation
- temporal variation
- measurement error
8
Q
Define true biological variation
A
- refers to variation in measurements from one individual to another caused by age, sex, race, genetics, medical history, & condition
9
Q
Define temporal variation
A
- refers to variation in measurements made on the same individual at different times caused by a change in a person’s health status, activity level, emotional state, & circadian rhythms
10
Q
Define measurement error
A
- refers to variation in measurements made on the same individual under the same conditions at different times caused by the examiners, measuring instruments, & procedural methods
11
Q
Define standard error of measurement (SEM)
A
- likely standard deviation of the error made in predicting true scores when we have knowledge only of the obtained scores
12
Q
Define minimal detectable change (MDC)
A
- smallest amount of change in a measurement in excess of the measurement error
