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Table 3 Increase of COVID-19 cases per 100,000 inhabitants in the Netherlands

From: Why crowding matters in the time of COVID-19 pandemic? - a lesson from the carnival effect on the 2017/2018 influenza epidemic in the Netherlands

Daya

Cumulative Casesb

Absolute rate differencec

(95% CI)

Rate ratioc

(95% CI)

Non-carnival region

Carnival region

2020/02/23d

2020/02/24d

2020/02/25d

2020/02/26

2020/02/27

0

0.02

0.02 (−0.01–0.11)

13.18 (0.13-Inf)

2020/02/28

0.01

0.02

0.01 (−0.03–0.10)

2.53 (0.05–134.09)

2020/02/29

0.02

0.04

0.02 (−0.04–0.12)

1.74 (0.17–12.81)

2020/03/01

0.03

0.06

0.03 (−0.04–0.15)

1.93 (0.31–10.18)

2020/03/02

0.03

0.06

0.03 (−0.04–0.15)

1.93 (0.31–10.18)

2020/03/03

0.09

0.25

0.16 (0.02–0.34)

2.76 (1.15–6.71)

2020/03/04

0.16

0.35

0.19 (0.02–0.40)

2.16 (1.08–4.26)

2020/03/05

0.40

0.55

0.15 (−0.08–0.42)

1.37 (0.83–2.21)

2020/03/06

0.62

0.96

0.34 (0.04–0.68)

1.55 (1.06–2.24)

2020/03/07

0.86

1.57

0.72 (0.34–1.14)

1.84 (1.36–2.48)

2020/03/08

1.07

2.51

1.44 (0.97–1.96)

2.34 (1.82–3.01)

2020/03/09

1.16

3.56

2.40 (1.85–2.99)

3.06 (2.45–3.84)

2020/03/10

1.40

4.21

2.82 (2.22–3.46)

3.02 (2.46–3.71)

2020/03/11

1.69

5.83

4.13 (3.43–4.88)

3.44 (2.87–4.12)

2020/03/12

2.11

7.03

4.93 (4.15–5.75)

3.34 (2.84–3.93)

2020/03/13

2.60

9.28

6.69 (5.80–7.62)

3.57 (3.09–4.13)

2020/03/14

3.07

11.08

8.02 (7.05–9.03)

3.61 (3.17–4.13)

2020/03/15

3.67

12.70

9.03 (7.98–10.11)

3.46 (3.06–3.91)

  1. Abbreviation: CI Confidence interval
  2. a Only the first 3 weeks after the first date of the carnival in 2020 are presented in this Table. Full presentation of all the available data can be found in Table S5
  3. b Cumulative cases of COVID-19 cases per 100,000 inhabitants
  4. c Compared with non-carnival region
  5. d Carnival period