Table 1.
Information of suicide clusters in Hong Kong, 2014/1–2018/12.
| Cluster | Time | STPU(s) in cluster | Number of cases | Population | Relative risk | p-value |
|---|---|---|---|---|---|---|
| Location of residence | ||||||
| Overall (N = 4388) | ||||||
| 1 | 2016/08–2018/11 | 247, 280, 281, 283, 284, 286, 287, 288, 291, 292, 293, 294, 295 | 344 | 821,014 | 1.47 | 0.001 |
| Jumping (N = 2315) | ||||||
| 1 | 2016/02–2018/04 | 280, 281, 283, 284, 286, 287, 288, 291 | 140 | 515,538 | 1.89 | 0.001 |
| Charcoal burning (N = 564) | ||||||
| 1 | 2016/12–2018/04 | 515, 517, 518, 519, 522, 523, 524, 527, 529 | 20 | 208,396 | 4.34 | 0.03 |
| Location of incidence | ||||||
| Overall (N = 4362) | ||||||
| 1 | 2014/02–2016/03 | 121 | 13 | 1720 | 28.17 | 0.001 |
| 2 | 2015/10–2017/11 | 132, 133, 134, 135, 146 | 35 | 44,608 | 2.92 | 0.03 |
| 3 | 2016/08–2018/11 | 247, 280, 281, 283, 284, 286, 287, 288, 291, 292, 293, 294, 295 | 342 | 821,014 | 1.47 | 0.001 |
| Jumping (N = 2356) | ||||||
| 1 | 2014/02–2016/03 | 121 | 9 | 1720 | 36.14 | 0.001 |
| 2 | 2016/09–2018/11 | 280, 281, 283, 284, 286, 287, 288, 291, 292, 293, 294, 295 | 211 | 814,117 | 1.79 | 0.001 |
| Charcoal burning (N = 574) | ||||||
| 1 | 2014/10–2016/02 | 220, 221, 222, 227, 228, 229, 231, 232, 233, 234, 235, 266, 267, 268 | 26 | 323,838 | 3.58 | 0.028 |
| 2 | 2016/10–2017/06 | 920 | 7 | 20,361 | 28.43 | 0.003 |
Bold and italic indicate that the p-value is statistically significant (i.e., p < 0.05).