Table 2.
Estimated levels of “alarm thresholds” of pertussis outbreak at national level in Iran.
| Indices | Poisson median (range) 95% coverage | EWMA* | |
|---|---|---|---|
| Overall | All ages | 7.50 (4.48–11.06) | 7.55 |
| ≤ 1 | 5.59 (3.55–8.22) | 5.23 | |
| > 1 | 3.90 (2.20–6.36) | 3.28 | |
|
| |||
| Spring | All ages | 9.82 (6.87–11.51) | 9.36 |
| ≤ 1 | 7.04 (4.93–8.80) | 6.22 | |
| > 1 | 4.80 (3.41–6.95) | 4.06 | |
|
| |||
| Summer | All ages | 7.01 (4.88–11.84) | 6.65 |
| ≤ 1 | 4.50 (3.38–7.14) | 3.85 | |
| > 1 | 4.22 (2.95–6.87) | 3.39 | |
|
| |||
| Autumn | All ages | 6.49 (5.14–8.37) | 5.90 |
| ≤ 1 | 4.68 (3.45–6.47) | 3.66 | |
| >1 | 3.51 (1.97–4.97) | 2.66 | |
|
| |||
| Winter | All ages | 8.40 (4.17–10.91) | 7.24 |
| ≤ 1 | 6.51 (4.14–8.29) | 5.66 | |
| > 1 | 3.65 (1.98–5.11) | 2.69 | |
*
Exponentially weighted moving average.