BIOSTATS Flashcards Preview

NAPLEX > BIOSTATS > Flashcards

Flashcards in BIOSTATS Deck (14)
Loading flashcards...
0
Q

Type 2 error

A

Said no difference when there was a difference

False-negative

Increase power and duration to prevent

1
Q

Type 1 error

A

Said there was a difference and there wasn’t

False positive

2
Q

Power

A

Power equals one minus b

3
Q

Nominal data

A

Yes or no

4
Q

Ordinal data

A

Ranking

5
Q

Interval data

A

Temperature is an example no real zero

6
Q

Ratio data

A

Has a real zero examples are height weight time and length

7
Q

Statistical test used for nominal data

A

Chi-square or Fisher exact test

8
Q

Statistical test used for ordinal data

A

Wilcoxon rank sum test or mann Whitney u test

9
Q

Ratio and interval data statistical test

A

Students t-test and anova

10
Q

Relative risk or risk ratio

A

Risk in treatment group divided by risk in control group

If equal to one no difference
If less than one less likely to occur in treatment group
If greater than one the event is more likely to occur in the treatment group

11
Q

Relative risk reduction

A

Percent risk in control group minus percent risk in treatment group divided by percent risk in control group

Or 1-rr

12
Q

Absolute risk reduction

A

% risk in control group -% in treatment group

13
Q

Number needed to treat

A

1/ARR