Public Health Keys Flashcards
Increased NPV
increased Sensitivity
Increased PPV
increased Specificity
Incidence
of new cases/population at risk
P-value > alpha w/ right tail
reject null
P-value < alpha w/ left tail
reject null
ARR = risk decreases if certain intervention happen
NPV-PPV
ARI = risk increase if certain intervention happens
PPV - NPV
NNH
1/ARI (PPV-NPV)
NNT
1/ARR (NPV-PPV)
Remember I comes before R & H comes before T
Nominal = NO order (labeling w/ no significance)
Helps w/ grouping
Hair color + gender
Ordinal = Order (categories but NOT comparable)
Level of satisfaction + Pain + education
Interval = Order + comparable (no true 0)
Temperature
Ratio = Clear definition of zero (multiple + divide)
Weight + height + Age
____ Date of diagnosis
Interval
____ Town of residence
Nominal