None

236 (77.4)

49 (52.1)

187 (88.6)

<0.001*

1

44 (14.4)

25 (26.6)

19 (9.0)

2

18 (5.9)

13 (13.8)

5 (2.4)

3

7 (2.3)

7 (7.5)

0 (0.0)