Table 1.
Incidence rates (cases/100,000 person-years) of BD in Sichuan province, 2011–2019
| 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | |
|---|---|---|---|---|---|---|---|---|---|
| Annual incidence | 16.13 | 12.96 | 11.60 | 8.76 | 7.31 | 6.85 | 6.65 | 5.79 | 6.17 |
| Age (incidence) | |||||||||
| < 1 | 207.49 | 223.83 | 230.61 | 167.37 | 149.39 | 121.55 | 122.46 | 111.32 | 84.94 |
| 1~ | 134.99 | 98.52 | 96.42 | 78.15 | 63.50 | 63.45 | 59.85 | 59.33 | 47.00 |
| 2~ | 73.71 | 52.32 | 45.19 | 43.01 | 34.78 | 35.83 | 31.49 | 30.27 | 28.57 |
| 3~ | 52.08 | 38.01 | 39.72 | 28.90 | 24.60 | 25.68 | 22.58 | 15.69 | 18.47 |
| 4~ | 33.84 | 30.90 | 28.43 | 20.34 | 17.41 | 16.70 | 19.97 | 13.63 | 17.54 |
| 5~ | 27.97 | 24.43 | 23.88 | 20.27 | 14.19 | 16.76 | 13.98 | 15.50 | 12.09 |
| 6~ | 21.88 | 19.37 | 22.52 | 12.22 | 13.89 | 13.12 | 12.57 | 10.62 | 11.52 |
| 7~ | 17.18 | 11.76 | 10.84 | 7.19 | 7.47 | 5.67 | 4.93 | 4.60 | 9.28 |
| 8~ | 13.97 | 8.81 | 10.09 | 5.39 | 4.46 | 3.64 | 3.48 | 3.75 | 7.77 |
| 9~ | 13.95 | 13.38 | 14.86 | 8.74 | 8.19 | 7.61 | 6.17 | 7.06 | 6.04 |
| 10~ | 10.58 | 7.32 | 6.98 | 4.81 | 4.15 | 4.05 | 4.09 | 3.70 | 4.11 |
| 15~ | 6.74 | 6.04 | 5.17 | 3.78 | 3.01 | 3.95 | 3.20 | 2.80 | 4.21 |
| 20~ | 9.49 | 6.94 | 5.86 | 3.92 | 3.32 | 3.26 | 3.49 | 2.80 | 5.54 |
| 25~ | 13.94 | 10.31 | 8.47 | 6.33 | 5.37 | 4.79 | 5.41 | 4.46 | 3.73 |
| 30~ | 9.83 | 11.00 | 8.98 | 6.21 | 5.60 | 4.91 | 5.08 | 4.33 | 4.46 |
| 35~ | 7.85 | 6.44 | 5.04 | 3.86 | 2.59 | 2.13 | 2.58 | 1.90 | 2.13 |
| 40~ | 8.99 | 7.35 | 6.08 | 4.41 | 3.11 | 2.89 | 2.84 | 2.49 | 2.72 |
| 45~ | 13.18 | 7.29 | 5.22 | 3.91 | 3.34 | 3.05 | 3.03 | 2.56 | 2.72 |
| 50~ | 7.39 | 8.87 | 8.12 | 6.65 | 5.69 | 6.51 | 7.19 | 5.76 | 3.89 |
| 55~ | 10.88 | 8.45 | 6.64 | 4.69 | 3.32 | 2.74 | 2.48 | 2.14 | 3.59 |
| 60~ | 15.11 | 11.05 | 8.31 | 7.17 | 5.57 | 5.33 | 4.56 | 3.78 | 3.61 |
| 65~ | 13.65 | 12.15 | 10.18 | 8.11 | 6.37 | 5.56 | 4.89 | 4.10 | 4.30 |
| 70~ | 16.58 | 13.24 | 13.39 | 8.82 | 8.16 | 6.34 | 6.70 | 4.43 | 4.61 |
| 75~ | 14.86 | 13.61 | 13.46 | 8.66 | 8.12 | 7.37 | 6.75 | 6.39 | 8.28 |
| 80~ | 19.82 | 13.45 | 10.67 | 8.95 | 6.99 | 5.20 | 4.87 | 4.72 | 5.91 |
| ≥ 85 | 35.50 | 10.41 | 7.59 | 9.50 | 7.67 | 6.33 | 7.34 | 5.02 | 5.50 |
| Sex (incidence) | |||||||||
| Male | 17.40 | 13.47 | 11.53 | 8.89 | 7.57 | 7.14 | 6.63 | 5.80 | 6.27 |
| Female | 14.82 | 12.43 | 11.69 | 8.64 | 7.06 | 6.56 | 6.67 | 5.78 | 6.07 |
| Male-to-female ratio | 1.21 | 1.12 | 1.02 | 1.05 | 1.05 | 1.10 | 1.01 | 1.02 | 1.05 |
| Population classification (%) | |||||||||
| Scattered children | 34.68 | 35.27 | 38.97 | 40.08 | 41.31 | 39.87 | 39.32 | 40.35 | 33.99 |
| School-children | 8.97 | 8.91 | 9.68 | 8.66 | 9.07 | 9.98 | 9.30 | 9.92 | 12.98 |
| Nursery children | 3.27 | 2.89 | 3.12 | 3.25 | 3.16 | 4.45 | 4.02 | 4.70 | 5.50 |
| Farmer | 32.25 | 33.40 | 30.89 | 30.63 | 29.75 | 28.86 | 31.00 | 28.60 | 30.73 |
| others | 20.83 | 19.54 | 17.35 | 17.38 | 16.71 | 16.85 | 16.36 | 16.43 | 16.80 |