Quantitative Methods 2017

Confidence intervals

• More patients increase reliability, decrease uncertainty

Toxicity

No toxicity Proportion

p=0.45

New technique Old technique

5

15

25% (9-49%)

10

15

40% (21-61%)

Toxicity

No toxicity Proportion

p=0.05

New technique Old technique

20

60

25% (16-36%)

40

60

40% (30-50%)