Impact of the First Wave of COVID-19 on the Number of General Anesthesia Cases in 34 Tertiary Hospitals in Japan: A Multicenter Retrospective Study
Table 1
Comparison of the number of general anesthesia cases in each prefecture. The “number of patients with COVID-19” reflects the number of patients per 100,000 population in each prefecture as of April 2020.
State of emergency
Prefectures
Number of facilities
Number of patients with COVID-19
Number of GA cases (%)
Jan
Feb
Mar
Apr
May
Jun
Jul
Early issued
Tokyo
9
26.1
94.1
88.7
97.8
50.6
37.8
67.3
84.1
Osaka
1
25.4
92.4
89.7
99.8
81.6
65.5
90.2
99.3
Saitama
4
10.2
93.9
90.5
97.1
81.1
59.6
82.0
86.5
Chiba
1
9.6
87.5
84.4
91.1
74.8
59.2
86.5
94.5
Kanagawa
1
9.1
83.9
80.0
91.4
75.9
58.2
79.4
93.5
Average
16.1
90.4
86.7
95.5
72.8
56.1
81.1
91.6
Late issued
Ishikawa
1
20.9
93.9
95.2
103.2
71.8
47.6
71.3
75.0
Hokkaido
1
11.2
94.5
90.8
82.4
84.0
47.4
70.2
88.2
Kochi
1
8.2
94.3
94.3
92.9
86.8
77.7
94.6
100.7
Gunma
7
6.5
90.7
86.4
102.7
84.2
67.5
89.2
96.4
Gifu
1
6.2
88.2
80.2
93.0
64.7
57.0
85.3
81.3
Aichi
2
4.1
92.0
89.8
99.3
87.9
59.8
76.7
91.5
Fukushima
1
3.7
91.6
88.2
98.4
69.6
52.4
72.9
87.2
Nagano
1
2.8
99.0
97.7
111.3
93.0
79.9
102.1
103.9
Tochigi
1
2.1
90.1
85.3
100.2
85.5
78.4
97.2
96.5
Niigata
1
2.0
87.9
82.3
88.8
88.1
65.1
83.2
86.1
Okayama
1
1.0
86.1
83.3
98.5
82.0
57.6
76.8
85.7
Average
6.3∗
91.7
88.5
97.3
81.6†
62.8
83.6
90.2
The “number of GA cases” reflects the number of GA cases in each prefecture normalized versus the number in July 2019. The data after January 2020, when the first case of COVID-19 was reported in Japan, are shown. Values with significant differences between the two groups are shown in bold. The symbols indicate significant differences between groups. ∗,†Early vs. late group ().
