Table 1 Differences in the number of emergency department visits and the proportion in each category between the initial period and the subsequent period

Total No. of ED visits

8486 (100)

5871 (100)

−30.8%

82,049 (100)

65,412 (100)

−20.3%

< 0.001*

[273.7, 248.7–298.8]

[202.4, 194.3–210.6]

[71.3, 43.6–98.9]

[245.7, 241.3–250.0]

[195.3, 192.3–198.2]

[50.4, 45.1–55.7]

  < 5

950 (11.2)

401 (6.8)

−57.8%

9537 (11.6)

5643 (8.6)

−40.8%

< 0.001*

< 0.001*

[28.6, 27.5–29.7]

[16.8, 16.0–17.7]

[11.7, 10.3–13.1]

 5–17

898 (10.6)

442 (8)

−50.8%

7414 (9.0)

4329 (6.6)

−41.6%

< 0.001*

< 0.001*

[22.2, 21.3–23.0]

[12.9, 12.4–13.4]

[9.3, 8.3–10.3]

 18–64

4476 (52.7)

3315 (56)

−25.9%

42,175 (51.4)

36,159 (55.3)

−14.3%

< 0.001*

< 0.001*

[126.3, 123.8–128.7]

[107.9, 106.2–109.7]

[18.3, 15.3–21.4]

  ≥ 65

2162 (25.5)

1713 (29.2)

−20.8%

22,923 (27.9)

19,281 (29.5)

−15.9%

< 0.001*

< 0.001*

[68.6, 67.6–69.6]

[57.6, 56.6–58.6]

[11.1, 9.7–12.5]

 Female

4210 (49.6)

2782 (47.4)

−33.9%

38,870 (47.4)

31,256 (47.8)

−19.6%

< 0.001*

0.117

[116.4, 114.0–118.7]

[93.3, 91.6–95.0]

[23.1, 20.2–26.0]

 Male

4276 (50.4)

3089 (52.6)

−27.8%

43,179 (52.6)

34,156 (52.2)

−20.9%

< 0.001*

0.117

[129.3, 126.9–131.6]

[102.0, 100.2–103.7]

[27.3, 24.4–30.2]

 Adults

5413 (63.8)

4078 (69.5)

−24.7%

52,206 (63.6)

43,061 (65.8)

−17.5%

< 0.001*

< 0.001*

[156.3, 153.5–159.1]

[128.5, 126.6–130.5]

[27.8, 24.4–31.2]

 Trauma

1417 (16.7)

1089 (18.5)

−23.1%

15,275 (18.6)

14,140 (21.6)

−7.4%

< 0.001*

< 0.001*

[45.7, 44.9–46.6]

[42.2, 41.3–43.1]

[3.5, 2.3–4.8]

 Pediatrics

1575 (18.6)

666 (11.3)

−57.7%

14,442 (17.6)

7713 (11.8)

−46.6%

< 0.001*

< 0.001*

[43.2, 41.6–44.9]

[23.0, 21.9–24.1]

[20.2, 18.2–22.2]

 Others

81 (1.0)

38 (0.6)

−53.1%

126 (0.2)

498 (0.8)

295.2%

< 0.001*

< 0.001*

[0.4, 0.2–0.5]

[1.5, 1.3–1.7]

[−1.1, −1.3 −−0.9]

 I

250 (2.9)

243 (4.1)

−2.8%

2739 (3.3)

2183 (3.3)

−20.3%

< 0.001*

0.949

[8.2, 7.9–8.5]

[6.5, 6.2–6.8]

[1.7, 1.2–2.1]

 II

1532 (18.1)

1086 (18.5)

−29.1%

16,567 (20.2)

13,444 (20.6)

−18.9%

< 0.001*

0.742

[49.6, 48.5–50.7]

[40.1, 39.1–41.2]

[9.5, 7.9–11.0]

 III

6489 (76.5)

4358 (74.2)

−32.8%

61,231 (74.6)

48,158 (73.6)

−21.4%

< 0.001*

0.050

[183.3, 179.1–187.5]

[143.8, 141.2–146.3]

[39.6, 34.7–44.5]

 IV

152 (1.8)

149 (2.5)

−2.0%

958 (1.2)

1126 (1.7)

17.5%

0.023 *

< 0.001*

[2.9, 2.6–3.2]

[3.4, 3.0–3.7]

[−0.5, −0.9–0.1]

 V

63 (0.7)

35 (0.6)

−44.4%

554 (0.7)

501 (0.8)

−9.6%

0.204

0.198

[1.7, 1.5–1.8]

[1.5, 1.3–1.7]

[0.2, −0.1–0.4]

OHCA

15 (0.2)

16 (0.3)

6.7%

165 (0.2)

182 (0.3)

10.3%

0.374

0.002*

[0.5, 0.4–0.6]

[0.5, 0.5–0.6]

[0.0, −0.2–0.1]

Arrival Modes

2020 January No. (%)

2020 February No. (%)

% Change

2019 Feb–Dec Sum (%)

2020 Feb–Dec Sum (%)

% Change (Sum)

 (MW U test)

(Median, P25–P75)

(Median, P25–P75)

(No.)

(%)

 Ambulatory

7077 (83.2)

4517 (77.0)

−36.2%

66,638 (81.2)

50,707 (77.5)

−24.9%

< 0.001*

< 0.001*

(6065, 5924–6410.5)

(4624, 4372–4861.5)

 EMS

779 (9.4)

766 (13.0)

−1.7%

8318 (10.1)

8552 (13.1)

2.8%

0.178

< 0.001*

(743, 722.5–777)

(796, 762.5–810.5)

 Transfer-in

630 (7.2)

588 (10.0)

−6.7%

7093 (8.6)

6153 (9.4)

−13.3%

< 0.001*

0.009*

(644, 621–668.5)

(571, 532.5–588.5)