Adjusted RR [IC 95%]

p-value

Age

8 - 40

1.36 [0.76 - 2.43]

0.298

41 - 60

1

>60

1.56 [1.01 - 2.40]

0.042

Charlson’s score

0

1

1 - 2

3.87 [0.52 - 28.36]

0.183

≥3

8.67 [1.20 - 62.66]

0.032