Table 1.
Mimicking real-time analysis of emergency department visits due to influenza for individuals age 13 and over using cylindrical and irregular shaped space-time permutation scan statistics ( mlink-space and mlink space-time )
| Date | Method | Number of days in the signal | Number of ZIPs in the signal | Observed cases | Expected cases | Relative risk | pvalue | Recurrence interval |
|---|---|---|---|---|---|---|---|---|
| 24-Jan-05 |
Mlink space-time |
2 |
2 |
2 |
0.07 |
27.1 |
0.0630 |
16 |
| Mlink space |
2 |
29 |
3 |
0.25 |
12.1 |
0.1526 |
7 |
|
| Cylindrical |
4 |
16 |
3 |
0.12 |
24.2 |
0.0049 |
204 |
|
| 25-Jan-05 |
Mlink space-time |
3 |
3 |
2 |
0.07 |
27.1 |
0.0320 |
31 |
| Mlink space |
3 |
29 |
3 |
0.25 |
12.1 |
0.0930 |
11 |
|
| Cylindrical |
5 |
16 |
3 |
0.12 |
24.2 |
0.0049 |
204 |
|
| 26-Jan-05 |
Mlink space-time |
4 |
6 |
2 |
0.07 |
26.9 |
0.0746 |
13 |
| Mlink space |
4 |
16 |
3 |
0.23 |
13.0 |
0.0739 |
14 |
|
| Cylindrical |
6 |
16 |
4 |
0.30 |
13.4 |
0.0051 |
196 |
|
| 28-Jan-05 |
Mlink space-time |
4 |
5 |
2 |
0.12 |
16.1 |
0.3049 |
3 |
| Mlink space |
6 |
5 |
3 |
0.17 |
17.2 |
0.0260 |
38 |
|
| Cylindrical |
7 |
34 |
5 |
0.45 |
11.0 |
0.0016 |
625 |
|
| 29-Jan-05 |
Mlink space-time |
5 |
11 |
2 |
0.17 |
11.9 |
0.5102 |
2 |
| Mlink space |
7 |
8 |
3 |
0.20 |
14.8 |
0.0726 |
14 |
|
| Cylindrical |
7 |
34 |
5 |
0.54 |
9.3 |
0.0073 |
137 |
|
| 15-May-05 |
Mlink space-time |
3 |
4 |
2 |
0.04 |
45.5 |
0.0040 |
250 |
| Mlink space |
6 |
30 |
3 |
0.43 |
7.0 |
0.3623 |
3 |
|
| Cylindrical |
7 |
6 |
2 |
0.06 |
31.4 |
0.0416 |
24 |
|
| 17-May-05 |
Mlink space-time |
3 |
3 |
1 |
0.02 |
48.0 |
0.4132 |
2 |
| Mlink space |
3 |
5 |
2 |
0.07 |
26.7 |
0.0288 |
35 |
|
| Cylindrical |
7 |
15 |
3 |
0.14 |
21.3 |
0.0019 |
526 |
|
| 18-May-05 |
Mlink space-time |
4 |
8 |
2 |
0.07 |
26.7 |
0.0210 |
48 |
| Mlink space |
4 |
5 |
2 |
0.07 |
26.7 |
0.0551 |
18 |
|
| Cylindrical |
7 |
15 |
3 |
0.14 |
21.3 |
0.0019 |
526 |
|
| 19-May-05 |
Mlink space-time |
5 |
9 |
2 |
0.07 |
26.7 |
0.0430 |
23 |
| Mlink space |
5 |
5 |
2 |
0.07 |
26.7 |
0.0752 |
13 |
|
| Cylindrical |
7 |
15 |
3 |
0.14 |
21.3 |
0.0064 |
156 |
|
| 26-Jul-05 |
Mlink space-time |
6 |
9 |
2 |
0.09 |
21.7 |
0.0050 |
200 |
| Mlink space |
6 |
2 |
2 |
0.12 |
16.7 |
0.0602 |
17 |
|
| Cylindrical |
7 |
3 |
2 |
0.12 |
16.7 |
0.1220 |
8 |
|
| 2-Sep-05 |
Mlink space-time |
6 |
5 |
3 |
0.15 |
20.4 |
0.0080 |
125 |
| Mlink space |
6 |
2 |
3 |
0.19 |
15.6 |
0.0666 |
15 |
|
| Cylindrical |
6 |
3 |
3 |
0.21 |
14.0 |
0.0888 |
11 |
|
| 3-Sep-05 |
Mlink space-time |
7 |
5 |
3 |
0.15 |
20.4 |
0.0030 |
333 |
| Mlink space |
7 |
2 |
3 |
0.19 |
15.6 |
0.0452 |
22 |
|
| Cylindrical |
7 |
3 |
3 |
0.21 |
14.0 |
0.0735 |
14 |
|
| 27-Sep-05 |
Mlink space-time |
5 |
8 |
2 |
0.08 |
25.4 |
0.0090 |
111 |
| Mlink space |
5 |
7 |
2 |
0.08 |
25.4 |
0.0164 |
61 |
|
| Cylindrical |
7 |
12 |
2 |
0.20 |
9.8 |
0.4350 |
2 |
|
| 28-Sep-05 |
Mlink space-time |
6 |
13 |
2 |
0.08 |
25.4 |
0.0050 |
200 |
| Mlink space |
6 |
7 |
2 |
0.08 |
25.4 |
0.0148 |
67 |
|
| Cylindrical |
7 |
12 |
2 |
0.20 |
9.8 |
0.4600 |
2 |
|
| 27-Oct-05 |
Mlink space-time |
1 |
2 |
2 |
0.11 |
17.5 |
0.0010 |
1000 |
| Mlink space |
1 |
2 |
2 |
0.11 |
17.5 |
0.0010 |
1000 |
|
| Cylindrical |
7 |
18 |
2 |
0.11 |
17.5 |
0.0581 |
17 |
|
| 28-Oct-05 |
Mlink space-time |
2 |
2 |
2 |
0.11 |
17.5 |
0.0010 |
1000 |
| Mlink space |
2 |
2 |
2 |
0.11 |
17.5 |
0.0010 |
1000 |
|
| Cylindrical |
7 |
18 |
2 |
0.11 |
17.5 |
0.0581 |
17 |
|
| 29-Oct-05 |
Mlink space-time |
3 |
2 |
2 |
0.11 |
17.5 |
0.0010 |
1000 |
| Mlink space |
3 |
2 |
2 |
0.11 |
17.5 |
0.0010 |
1000 |
|
| Cylindrical |
7 |
18 |
2 |
0.11 |
17.5 |
0.0581 |
17 |
|
| 30-Oct-05 |
Mlink space-time |
4 |
2 |
3 |
0.14 |
21.8 |
0.0010 |
1000 |
| Mlink space |
4 |
2 |
3 |
0.14 |
21.8 |
0.0010 |
1000 |
|
| Cylindrical |
7 |
1 |
3 |
0.14 |
21.8 |
0.0007 |
1429 |
|
| 31-Oct-05 |
Mlink space-time |
5 |
1 |
3 |
0.14 |
21.8 |
0.0020 |
500 |
| Mlink space |
5 |
2 |
3 |
0.14 |
21.8 |
0.0010 |
1000 |
|
| Cylindrical |
7 |
11 |
4 |
0.26 |
15.4 |
0.0007 |
1429 |
|
| 1-Nov-05 |
Mlink space-time |
6 |
2 |
3 |
0.14 |
21.8 |
0.0070 |
143 |
| Mlink space |
6 |
2 |
3 |
0.14 |
21.8 |
0.0080 |
125 |
|
| Cylindrical |
7 |
11 |
4 |
0.29 |
13.9 |
0.0026 |
385 |
|
| 2-Nov-05 |
Mlink space-time |
7 |
2 |
3 |
0.14 |
21.8 |
0.0060 |
167 |
| Mlink space |
7 |
2 |
3 |
0.14 |
21.8 |
0.0050 |
200 |
|
| Cylindrical |
7 |
11 |
4 |
0.29 |
13.9 |
0.0026 |
385 |
|
| 19-Nov-05 |
Mlink space-time |
5 |
10 |
2 |
0.13 |
15.8 |
0.2137 |
5 |
| Mlink space |
7 |
11 |
4 |
0.32 |
12.6 |
0.0070 |
143 |
|
| Cylindrical |
7 |
8 |
3 |
0.21 |
14.4 |
0.0643 |
16 |
|
| 19-Dec-05 | Mlink space-time |
7 |
4 |
1 |
0.06 |
17.0 |
0.0020 |
500 |
| Mlink space |
7 |
2 |
1 |
0.06 |
17.0 |
0.2542 |
4 |
|
| Cylindrical | 7 | 54 | 2 | 0.18 | 11.3 | 0.1820 | 5 |
For mlink space-time, the number of zip-code areas in the signal is the number of distinct ZIP codes over the temporal length of the cluster, regardless of their temporal position. Overlapping signals are grouped in the table.