Table 3.
Influenza ilness incidence rates and number of outcomes among children < 5-year-old in Suzhou, China, 2011/12 to 2016/17 influenza seasons.
| Incidence rate, per 100 person-years (95% CI) | Number of outcomes per year (95% CI) | |
|---|---|---|
|
| ||
| Non-medically attended | 1.67 (1.66,1.69) | 4919 (4864,4975) |
| 0–5 m | 2.10 (2.03,2.17) | 580 (561,599) |
| 6–23 m | 1.56 (1.53,1.60) | 1412 (1382,1442) |
| 24–35 m | 2.04 (2.00,2.09) | 1255 (1227,1283) |
| 36–59 m | 1.45 (1.42,1.48) | 1661 (1628,1693) |
| Outpatient | 7.49 (7.45,7.53) | 21994 (21880,22108) |
| 0–5 m | 3.98 (3.89,4.08) | 1101 (1075,1127) |
| 6 –23 m | 9.61 (9.53,9.68) | 8673 (8602,8744) |
| 24–35 m | 7.93 (7.84,8.02) | 4867 (4813,4920) |
| 36–59 m | 6.44 (6.38,6.50) | 7365 (7298,7431) |
| Hospitalization | 0.90 (0.88,0.91) | 2633 (2592,2674) |
| 0–5 m | 1.76 (1.70,1.83) | 487 (469,504) |
| 6–23 m | 1.12 (1.09,1.15) | 1011 (986,1036) |
| 24–35 m | 0.65 (0.62,0.67) | 398 (382,414) |
| 36–59 m | 0.65 (0.63,0.67) | 742 (720,764) |
CI: Confidence interval.