UW 1 Flashcards
(43 cards)
What does a two-sample t test measure
Compares 2 means
What does a two-sample Z test measure
Compares 2 means
What does ANOVA measure
Compares 3 or more means
What is Chi-square test for?
Compares percentages or proportions
What is meta analysis used for
Pooling data from several studies to analyze
Big statistical power
Which type of prevention’s goals are to prevent recurrence and slow progression
Tertiary Prevention
Which type of prevention decreases disease prevalence
Secondary Prevention
Which type of prevention decreases disease incidence
Primary Prevention
What kind of prevention: Health education programs promoting healthy lifestyles
Primary Prevention
What kind of prevention: Community BP screening
Secondary Prevention
What kind of prevention:
Exercise program prescribed to pts recovering from MI
Tertiary Prevention
What does NNT represent
The number of people needed to treat to prevent one case
Calculation for NNT
Inverse of Incidence Rate
1 / Incidence Rate
Calculation for NNH
1 / Prevalence
Top 3 reasons for Infant Mortality
- Birth defects
- Low birth weight/Prematurity
- SIDS
Calculation for infant Mortality rate
Infant deaths / Live births X 1,000
Maternal Mortality Rate
Maternal deaths / Live births X 100,000
Case Fatality Rate
Deaths / Cases X 100
Proportionate Mortality Rate (PMR)
Deaths from specified cause / Total deaths X 100
Increased specificity effect on PPV
Increased PPV
Increased sensitivity effect on NPV
Increased NPV
Effect of increased prevalence on NPV and PPV
Increased prevalence =
Increased PPV
Decreased NPV
Effect of decreased prevalence on NPV and PPV
Decreased Prevalence =
Decreased PPV
Increased NPV
In Bimodal curve, effect of decreasing cutoff point
Higher TP and Sensitivity
Lower Specificity
