Table 1: Probability of having k infections out of 35 TKAs.

k

0

1

2

3

4

5

P (X = k)

0.6790

0.2643

0.0500

0.0061

0.0005

< 0.0001

k = outcome, in this case: number of infected TKAs.

P (X = k) = the probability of having exactly k events.