Table 9.
Frequency by event type
| Event type | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | Total(%) |
|---|---|---|---|---|---|---|---|
| Type 1 | NAa | NAa | 1(1) | 9(6) | 7(4) | 9(5) | 26(3) |
| Type 2 | 34(42) | 38(44) | 33(32) | 35(24) | 29(18) | 45(25) | 214(28) |
| Type 3 | NAa | NAa | NAa | 1(1) | NAa | NAa | 1(0) |
| Type 4 | 29(36) | 33(38) | 58(56) | 69(48) | 66(41) | 76(42) | 331(44) |
| Type 5 | 2(2) | 2(2) | 1(1) | 3(2) | 5(3) | 2(1) | 15(2) |
| Type 6 | 8(10) | 11(13) | 7(7) | 2(2) | 21(13) | 24(13) | 73(10) |
| Type 7 | 7(9) | 2(2) | 1(1) | 1(1) | 6(4) | 3(2) | 20(3) |
| Type 9 | 1(1) | 1(1) | 2(2) | 23(16) | 27(17) | 21(12) | 75(10) |
| Total | 81(100) | 87(100) | 103(100) | 143(100) | 161(100) | 180(100) | 755(100) |
, df=7, .
The numbers of event treated by two events is 27 in 1998, 29 in 1999, 17 in 2000, 34 in 2001, 30 in 2002, and 37 in 2003.
a
NA: not available.