Table 2

Summary of signals generated by EARS C1, C2 and C3 cusum methods.

Method & parameters

No. signals of specified duration

Details of signals lasting ≥4 wks


1 wk

2 wks

3 wks

≥4 wks


C1 4 wk BL k = 3

5

6

1

5

1992 (wk 5-11), 1996 (3-12), 2003 (10-20), 2004 (4-14), 2007 (38-45)


C1 4 wk BL k = 4

5

4

0

5

1992 (wk 5-9), 1996 (5-9), 2003 (10-18), 2004 (4-7), 2007 (38-43)


C2 4 wk BL k = 4

7

5

2

5

1992 (wk 5-13), 1996 (5-14), 2003 (11-25), 2004 (4-17), 2006 (2-7)


C2 4 wk BL k = 5

7

1

1

4

1992 (wk 5-12), 1996 (5-13), 2003 (11-23), 2004 (4-15)


C2 4 wk BL k = 6

5

2

1

4

1992 (wk 5-11), 1996 (5-12), 2003 (11-21), 2004 (4-8)


C3 4 wk BL k = 5

8

1

2

4

1992 (wk 5-12), 1996 (5-12), 2003 (11-15), 2004 (4-15)


C1 8 wk BL k = 3

6

3

1

3

1992 (wk 5-13), 1996 (5-14), 2003 (11-19)


C1 8 wk BL k = 4

6

0

0

3

1992 (wk 5-10), 1996 (5-11), 2003 (11-15)


C2 8 wk BL k = 4

0

4

0

6

1992 (wk 5-15), 1996 (5-18), 2001 (13-16), 2003 (11-21), 2004 (11-14), 2006 (2-8)


C2 8 wk BL k = 5

1

4

0

3

1992 (wk 5-13), 1996 (5-16), 2003 (11-18)


C3 8 wk BL k = 4

0

4

0

6

1992 (wk 5-15), 1996 (5-18), 2001 (13-16), 2003 (11-21), 2004 (11-14), 2006 (2-8)


C3 8 wk BL k = 5

1

4

0

3

1992 (wk 5-13), 1996 (5-16), 2003 (11-18)


Parameter values applied were h = 2 with 4 or 8 weeks of baseline (BL) data and 3 ≤ k ≤ 6.

Pelecanos et al. BMC Medical Informatics and Decision Making 2010 10:74   doi:10.1186/1472-6947-10-74

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