Statistics Flashcards
TN/(TN + FP) (TN/total without the condition) ==> % of people WITHOUT the condition who TEST NEGATIVE
Ability of a test to obtain a NEGATIVE result when the condition is TRULY NEGATIVE
SPECIFICITY
SPIN
Use a SPECIFIC test to RULE IN a hypothesis
Which kinds of tests have few FPs?
SPECIFIC
Why would a specific test be used to RULE IN a hypothesis?
If the result is positive, it is likely that it is a TP - specific tests rule out FPs because the test has the ability to obtain a NEGATIVE result when it is a TN
TP/(TP + FN) (TP/total who test positive) ==> % of people WITH THE CONDITION who TEST POSITIVE
Ability of a test to obtain a POSITIVE result when the condition is TRULY POSITIVE
SENSITIVITY
SNOUT
Use a sensitive test to RULE out a hypothesis
Which kinds of tests have few FNs?
SENSITIVE
Why would a sensitive test be used to RULE OUT a hypothesis?
Sensitive tests have few FNs, so if a NEGATIVE result it obtained, it is likely that it is a TN - can rule out FNs
Which kinds of tests test for POSITIVE results (RULING IN)?
SENSITIVE
Which kinds of tests test for NEGATIVE results (RULING OUT)?
SPECIFIC
2+ researchers doing the same test
INTERrater reliability
The same research doing the same test over at least 2 trials
INTRArater reliability
Minimum amount of change that reflects true change by the patient between two time points - improvements are not due to change - significance level for true change
Minimal detectable change (MDC)
Patient-derived score that reflects changes in a clinical intervention that are meaningful to the patient, improving patient participation in the benefit of care received
Minimal clinically important difference (MCID)