Table 2 Comparison of cases among different cities and city clusters.

From: A hierarchical study for urban statistical indicators on the prevalence of COVID-19 in Chinese city clusters based on multiple linear regression (MLR) and polynomial best subset regression (PBSR) analysis

Prevalence

High level clusters

Middle level clusters

Low level clusters

Average

Tier 1st

32.25

13.28

11.58

19.04

Tier 2nd

13.95

16.46

8.32

12.91

Tier 3rd

13.10

4.15

4.04

7.10

Tier 4th

4.84

6.96

3.47

5.09

Tier 5th

11.65

6.88

2.76

7.10

Average

15.16

9.55

6.04

N/A

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