Table 2 Observed versus expected injury deaths by season among children aged 0–19 years in Japan, 2000–2010 (N = 23,662)
From: Seasonality of child and adolescent injury mortality in Japan, 2000–2010
Total | Boys | Girls | |||||||
|---|---|---|---|---|---|---|---|---|---|
Obs | Exp | IR (95 % CI) | Obs | Exp | IR (95 % CI) | Obs | Exp | IR (95 % CI) | |
All injury | |||||||||
Spring | 6,053 | 5,960 | 1.02 (0.99–1.04) | 4,114 | 4,055 | 1.01 (0.99–1.04) | 1,939 | 1,905 | 1.02 (0.97–1.06) |
Summer | 6,769 | 5,960 | 1.14 (1.11–1.16) | 4,754 | 4,055 | 1.17 (1.14–1.20) | 2,015 | 1,905 | 1.06 (1.01–1.10) |
Autumn | 5,681 | 5,895 | 0.96 (0.94–0.99) | 3,825 | 4,011 | 0.95 (0.93–0.98) | 1,856 | 1,884 | 0.99 (0.94–1.03) |
Winter | 5,159 | 5,848 | 0.88 (0.86–0.90) | 3,406 | 3,979 | 0.86 (0.83–0.88) | 1,753 | 1,869 | 0.94 (0.90–0.98) |
Transport accidents | |||||||||
Spring | 2,183 | 2,200 | 0.99 (0.95–1.03) | 1,619 | 1,634 | 0.99 (0.94–1.04) | 564 | 565 | 1.00 (0.92–1.08) |
Summer | 2,520 | 2,200 | 1.15 (1.10–1.19) | 1,882 | 1,634 | 1.15 (1.10–1.20) | 638 | 565 | 1.13 (1.04–1.21) |
Autumn | 2,302 | 2,176 | 1.06 (1.02–1.10) | 1,709 | 1,616 | 1.06 (1.01–1.11) | 593 | 559 | 1.06 (0.98–1.14) |
Winter | 1,728 | 2,158 | 0.80 (0.76–0.84) | 1,278 | 1,603 | 0.80 (0.75–0.84) | 450 | 555 | 0.81 (0.74–0.89) |
Drowning | |||||||||
Spring | 427 | 553 | 0.77 (0.70–0.84) | 291 | 412 | 0.71 (0.63–0.79) | 136 | 142 | 0.96 (0.80–1.12) |
Summer | 1,105 | 553 | 2.00 (1.88–2.11) | 906 | 412 | 2.20 (2.06–2.34) | 199 | 142 | 1.41 (1.21–1.60) |
Autumn | 376 | 547 | 0.69 (0.62–0.76) | 255 | 407 | 0.63 (0.55–0.70) | 121 | 140 | 0.86 (0.71–1.02) |
Winter | 288 | 543 | 0.53 (0.47–0.59) | 182 | 404 | 0.45 (0.39–0.52) | 106 | 139 | 0.76 (0.62–0.91) |
Suffocation | |||||||||
Spring | 570 | 530 | 1.08 (0.99–1.16) | 367 | 320 | 1.15 (1.03–1.26) | 203 | 211 | 0.96 (0.83–1.10) |
Summer | 462 | 530 | 0.87 (0.79–0.95) | 267 | 320 | 0.84 (0.74–0.94) | 195 | 211 | 0.93 (0.80–1.06) |
Autumn | 488 | 524 | 0.93 (0.85–1.01) | 299 | 316 | 0.95 (0.84–1.05) | 189 | 208 | 0.91 (0.78–1.04) |
Winter | 585 | 520 | 1.12 (1.03–1.21) | 336 | 314 | 1.07 (0.96–1.19) | 249 | 207 | 1.21 (1.06–1.35) |
Suicide | |||||||||
Spring | 1,617 | 1,481 | 1.09 (1.04–1.14) | 1,055 | 957 | 1.10 (1.04–1.17) | 562 | 524 | 1.07 (0.99–1.16) |
Summer | 1,479 | 1,481 | 1.00 (0.95–1.05) | 943 | 957 | 0.99 (0.92–1.05) | 536 | 524 | 1.02 (0.94–1.11) |
Autumn | 1,462 | 1,465 | 1.00 (0.95–1.05) | 939 | 947 | 0.99 (0.93–1.05) | 523 | 518 | 1.01 (0.92–1.09) |
Winter | 1,322 | 1,453 | 0.91 (0.86–0.96) | 863 | 939 | 0.92 (0.86–0.98) | 459 | 514 | 0.89 (0.81–0.97) |
Homicide | |||||||||
Spring | 289 | 277 | 1.04 (0.92–1.16) | 165 | 154 | 1.07 (0.91–1.23) | 124 | 123 | 1.01 (0.83−1.18) |
Summer | 287 | 277 | 1.03 (0.92–1.15) | 153 | 154 | 0.99 (0.84–1.15) | 134 | 123 | 1.09 (0.90–1.27) |
Autumn | 257 | 274 | 0.94 (0.82–1.05) | 146 | 152 | 0.96 (0.80–1.11) | 111 | 122 | 0.91 (0.74–1.08) |
Winter | 268 | 272 | 0.98 (0.87–1.10) | 148 | 151 | 0.98 (0.82–1.14) | 120 | 121 | 0.99 (0.82–1.17) |
Undetermined | |||||||||
Spring | 268 | 232 | 1.16 (1.02–1.29) | 171 | 137 | 1.25 (1.06–1.44) | 97 | 95 | 1.02 (0.82–1.22) |
Summer | 222 | 232 | 0.96 (0.83–1.08) | 145 | 137 | 1.06 (0.89–1.23) | 77 | 95 | 0.81 (0.63–0.99) |
Autumn | 207 | 229 | 0.90 (0.78–1.03) | 102 | 135 | 0.75 (0.61–0.90) | 105 | 94 | 1.12 (0.90–1.33) |
Winter | 223 | 227 | 0.98 (0.85–1.11) | 125 | 134 | 0.93 (0.77–1.09) | 98 | 93 | 1.05 (0.84–1.26) |