Table 1.
The number of emergency patients registered in the Osaka Emergency Information Research Intelligent Operation Network system.
| January | February | March | April | May | June | July | August | September | October | November | December | Total | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Acute disease | 2019 | 34,239 | 25,757 | 26,544 | 26,370 | 27,524 | 27,131 | 29,555 | 32,882 | 27,935 | 26,681 | 26,538 | 29,499 | 340,655 |
| 2020 | 30,857 | 25,663 | 24,224 | 21,363 | 21,760 | 23,247 | 25,619 | 30,656 | 24,781 | 24,418 | 23,563 | 24,351 | 300,502 | |
| IRR (95% CI) | 0.90 (0.89–0.92) | 1.00 (0.98–1.01) | 0.91 (0.90–0.93) | 0.81 (0.80–0.82) | 0.79 (0.78–0.80) | 0.86 (0.84–0.87) | 0.87 (0.85–0.88) | 0.93 (0.92–0.95) | 0.89 (0.87–0.90) | 0.92 (0.90–0.93) | 0.89 (0.87–0.90) | 0.83 (0.81–0.84) | 0.88 (0.88–0.89) | |
| p-value | 0.00 | 0.68 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Disease and injury due to sport | 2019 | 135 | 166 | 232 | 232 | 252 | 281 | 289 | 295 | 309 | 227 | 213 | 194 | 2825 |
| 2020 | 141 | 144 | 51 | 23 | 17 | 76 | 146 | 282 | 225 | 192 | 194 | 113 | 1604 | |
| IRR (95% CI) | 1.04 (0.82–1.33) | 0.87 (0.69–1.09) | 0.22 (0.16–0.30) | 0.10 (0.06–0.15) | 0.07 (0.04–0.11) | 0.27 (0.21–0.35) | 0.51 (0.41–0.62) | 0.96 (0.81–1.13) | 0.73 (0.61–0.87) | 0.85 (0.69–1.03) | 0.91 (0.75–1.11) | 0.58 (0.46–0.74) | 0.57 (0.53–0.60) | |
| p-value | 0.72 | 0.21 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.59 | 0.00 | 0.09 | 0.35 | 0.00 | 0.00 | |
| Fire accident | 2019 | 58 | 37 | 40 | 34 | 33 | 21 | 38 | 26 | 35 | 29 | 25 | 36 | 412 |
| 2020 | 52 | 37 | 28 | 22 | 29 | 18 | 24 | 31 | 12 | 26 | 26 | 48 | 353 | |
| IRR (95% CI) | 0.90 (0.60–1.33) | 1.00 (0.62–1.62) | 0.70 (0.42–1.16) | 0.65 (0.36–1.14) | 0.88 (0.51–1.49) | 0.86 (0.43–1.69) | 0.63 (0.36–1.08) | 1.19 (0.69–2.09) | 0.34 (0.16–0.68) | 0.90 (0.51–1.58) | 1.04 (0.58–1.88) | 1.33 (0.85–2.11) | 0.86 (0.74–0.99) | |
| p-value | 0.57 | 1.00 | 0.15 | 0.11 | 0.61 | 0.64 | 0.08 | 0.51 | 0.00 | 0.69 | 0.89 | 0.19 | 0.03 | |
| Injury, poisoning, and disease due to industrial accident | 2019 | 348 | 321 | 370 | 365 | 374 | 385 | 497 | 542 | 455 | 406 | 370 | 365 | 4798 |
| 2020 | 279 | 317 | 274 | 282 | 253 | 349 | 344 | 504 | 342 | 368 | 316 | 305 | 3933 | |
| IRR (95% CI) | 0.80 (0.68–0.94) | 0.99 (0.84–1.16) | 0.74 (0.63–0.87) | 0.77 (0.66–0.90) | 0.68 (0.57–0.80) | 0.91 (0.78–1.05) | 0.69 (0.60–0.80) | 0.93 (0.82–1.05) | 0.75 (0.65–0.87) | 0.91 (0.78–1.05) | 0.85 (0.73–1.00) | 0.84 (0.72–0.98) | 0.82 (0.79–0.86) | |
| p-value | 0.01 | 0.87 | 0.00 | 0.00 | 0.00 | 0.18 | 0.00 | 0.24 | 0.00 | 0.17 | 0.04 | 0.02 | 0.00 | |
| Interhospital transport | 2019 | 2897 | 2445 | 2626 | 2732 | 2553 | 2492 | 2662 | 2560 | 2493 | 2581 | 2601 | 2855 | 31,497 |
| 2020 | 2895 | 2451 | 2367 | 1924 | 1959 | 1996 | 2395 | 2424 | 2282 | 2493 | 2533 | 2615 | 28,334 | |
| IRR (95% CI) | 1.00 (0.95–1.05) | 1.00 (0.95–1.06) | 0.90 (0.85–0.95) | 0.70 (0.66–0.75) | 0.77 (0.72–0.81) | 0.80 (0.75–0.85) | 0.90 (0.85–0.95) | 0.95 (0.90–1.00) | 0.92 (0.86–0.97) | 0.97 (0.91–1.02) | 0.97 (0.92–1.03) | 0.92 (0.87–0.97) | 0.90 (0.89–0.91) | |
| p-value | 0.98 | 0.93 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.00 | 0.22 | 0.34 | 0.00 | 0.00 | |
| Natural disaster | 2019 | 0 | 0 | 0 | 0 | 0 | 3 | 2 | 1 | 0 | 4 | 0 | 0 | 10 |
| 2020 | 8 | 0 | 0 | 0 | 0 | 1 | 2 | 0 | 0 | 2 | 0 | 0 | 13 | |
| IRR (95% CI) | NA | NA | NA | NA | NA | 0.33 (0.01–4.15) | 1.00 (0.07–13.80) | NA | NA | 0.50 (0.05–3.49) | NA | NA | 1.30 (0.53–3.31) | |
| p-value | 0.38 | 1.00 | 0.45 | 0.54 | ||||||||||
| Other injury | 2019 | 7116 | 5753 | 6317 | 6400 | 6157 | 5891 | 6312 | 6518 | 6253 | 6800 | 6785 | 7516 | 77,818 |
| 2020 | 6936 | 6151 | 5925 | 5021 | 5237 | 5536 | 6037 | 5837 | 5752 | 6645 | 6133 | 6552 | 71,762 | |
| IRR (95% CI) | 0.97 (0.94–1.01) | 1.07 (1.03–1.11) | 0.94 (0.91–0.97) | 0.78 (0.76–0.81) | 0.85 (0.82–0.88) | 0.94 (0.91–0.98) | 0.96 (0.92–0.99) | 0.90 (0.86–0.93) | 0.92 (0.89–0.95) | 0.98 (0.94–1.01) | 0.90 (0.87–0.94) | 0.87 (0.84–0.90) | 0.92 (0.91–0.93) | |
| p-value | 0.13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.18 | 0.00 | 0.00 | 0.00 | |
| Self-induced injury | 2019 | 197 | 195 | 245 | 216 | 254 | 291 | 286 | 270 | 254 | 258 | 240 | 247 | 2953 |
| 2020 | 265 | 217 | 250 | 184 | 253 | 270 | 315 | 267 | 316 | 297 | 204 | 229 | 3067 | |
| IRR (95% CI) | 1.35 (1.11–1.63) | 1.11 (0.91–1.36) | 1.02 (0.85–1.22) | 0.85 (0.70–1.04) | 1.00 (0.83–1.19) | 0.93 (0.78–1.10) | 1.10 (0.94–1.30) | 0.99 (0.83–1.18) | 1.24 (1.05–1.47) | 1.15 (0.97–1.37) | 0.85 (0.70–1.03) | 0.93 (0.77–1.11) | 1.04 (0.99–1.09) | |
| p-value | 0.00 | 0.28 | 0.82 | 0.11 | 0.96 | 0.38 | 0.24 | 0.90 | 0.01 | 0.10 | 0.09 | 0.41 | 0.14 | |
| Traffic accident involving car, ship, or aircraft | 2019 | 2620 | 2510 | 2997 | 3248 | 3024 | 2878 | 3198 | 3068 | 3067 | 3207 | 3223 | 3159 | 36,199 |
| 2020 | 2635 | 2578 | 2679 | 1891 | 2127 | 2658 | 2843 | 2695 | 2678 | 2820 | 2712 | 2818 | 31,134 | |
| IRR (95% CI) | 1.01 (0.95–1.06) | 1.03 (0.97–1.09) | 0.89 (0.85–0.94) | 0.58 (0.55–0.62) | 0.70 (0.67–0.74) | 0.92 (0.88–0.97) | 0.89 (0.84–0.94) | 0.88 (0.83–0.93) | 0.87 (0.83–0.92) | 0.88 (0.84–0.93) | 0.84 (0.80–0.89) | 0.89 (0.85–0.94) | 0.86 (0.85–0.87) | |
| p-value | 0.84 | 0.34 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Trauma due to assault | 2019 | 268 | 207 | 232 | 232 | 224 | 228 | 226 | 256 | 225 | 217 | 229 | 252 | 2796 |
| 2020 | 250 | 225 | 229 | 171 | 197 | 210 | 218 | 185 | 197 | 202 | 185 | 205 | 2474 | |
| IRR (95% CI) | 0.93 (0.78–1.11) | 1.09 (0.90–1.32) | 0.99 (0.82–1.19) | 0.74 (0.60–0.90) | 0.88 (0.72–1.07) | 0.92 (0.76–1.12) | 0.96 (0.80–1.17) | 0.72 (0.59–0.88) | 0.88 (0.72–1.06) | 0.93 (0.76–1.13) | 0.81 (0.66–0.98) | 0.81 (0.67–0.98) | 0.88 (0.84–0.93) | |
| p-value | 0.43 | 0.39 | 0.89 | 0.00 | 0.19 | 0.39 | 0.70 | 0.00 | 0.17 | 0.46 | 0.03 | 0.03 | 0.00 | |
| Water accident | 2019 | 5 | 3 | 6 | 2 | 2 | 2 | 7 | 9 | 9 | 3 | 1 | 3 | 52 |
| 2020 | 3 | 4 | 2 | 6 | 3 | 5 | 4 | 2 | 4 | 5 | 2 | 3 | 43 | |
| IRR (95% CI) | 0.60 (0.09–3.08) | 1.33 (0.23–9.10) | 0.33 (0.03–1.86) | 3.00 (0.54–30.39) | 1.50 (0.17–17.96) | 2.50 (0.41–26.25) | 0.57 (0.12–2.25) | 0.22 (0.02–1.07) | 0.44 (0.10–1.59) | 1.67 (0.32–10.73) | 2.00 (0.10–117.99) | 1.00 (0.13–7.47) | 0.83 (0.54–1.26) | |
| p-value | 0.51 | 0.73 | 0.18 | 0.18 | 0.69 | 0.29 | 0.39 | 0.04 | 0.18 | 0.51 | 0.63 | 1.00 | 0.36 | |
| Other | 2019 | 14 | 9 | 13 | 11 | 13 | 12 | 11 | 7 | 11 | 7 | 11 | 60 | 179 |
| 2020 | 9 | 6 | 9 | 11 | 9 | 5 | 8 | 15 | 4 | 11 | 5 | 10 | 102 | |
| IRR (95% CI) | 0.64 (0.25–1.59) | 0.67 (0.20–2.10) | 0.69 (0.26–1.75) | 1.00 (0.39–2.54) | 0.69 (0.26–1.75) | 0.42 (0.11–1.27) | 0.73 (0.25–1.99) | 2.14 (0.82–6.21) | 0.36 (0.08–1.23) | 1.57 (0.56–4.78) | 0.45 (0.12–1.42) | 0.17 (0.08–0.33) | 0.57 (0.44–0.73) | |
| p-value | 0.31 | 0.45 | 0.40 | 1.00 | 0.40 | 0.10 | 0.50 | 0.09 | 0.08 | 0.36 | 0.14 | 0.00 | 0.00 |
IRR: incident rate ratio; CI: confidence interval; NA: no assessment. IRR is for 2020 versus 2019.