Table 3 Total Number and Relative Risk of Total Emergency Room Visit and Hospital Stay, Emergency Room Visit Alone and Hospital Stay Alone by Risk Category in Two Years Follow-Up (2005-2006)

-7:-1

518 (25)

0.4 (0.8)

0 (0,8)

0.0 (Reference)

0.0 (Reference)

0.0 (Reference)

0:3

1549 (38)

0.7 (1.1)

0 (0,13)

1.85 (1.6-2.1)

1.7 (1.5-2.0)

1.9 (1.6-2.2)

4:8

1507 (48)

1.1 (1.6)

0 (0,14)

2.9 (2.5-3.2)

2.3 (2.0-2.6)

3.4 (2.9-3.9)

9:15

1314 (62)

1.6 (2.2)

1 (0,24)

4.9 (4.3-5.6)

3.4 (3.0-4.0)

6.0 (5.1-7.0)

16 +

897 (76)

2.6 (2.9)

2 (0,24)

9.5 (8.1-11.2)

4.6 (3.9-5.4)

13.3 (11.2-15.9)

P value

<. 01

<. 01

<. 01