Definitions Flashcards
Precision
3 darts together not at the bullseye
Accuracy
3 darts together at the bullseye
Alpha: what type of error, blank positive error , used with blank value, you saw a difference that did blank exist
type one error
false positive error
p-value
u saw A difference that did not exist
Beta: what type of error, power equation? Larger sample size yields blank power?
type 2 error
power = 1 - B
larger sample size = more power
there is power in numbers
Give the three percents associated with 1, 2, and 3 standard deviations away from the mean
68, 95, 99.7
Statistical test that compares 2 means
t test (2 words)
Statistical test that compares 3 means
ANOVA = analysis of variance (3 words)
Statistical test that compares proportions or percentages
Chi-square
Cha-tegorical
Primary disease prevention
prevent disease occurrence
Secondary disease prevention
screening early for disease
Tertiary disease prevention
treatment to reduce disability from disease
Quaternary disease prevention
Identifying patients at risk for unnecessary treatment/protecting from harmful new interventions
Selection bias
participants selected differ from other groups in additional determinants of the outcome
Measurement bias
measurement or data gathering methods differ between groups
Confounding bias
a third variable is positively or negatively associated with the exposure and outcome variables, inducing an incorrect association
