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Table 2 Temporal clustering of reported brucellosis cases in the mainland of China from 2012 to 2016

From: Human distribution and spatial-temporal clustering analysis of human brucellosis in China from 2012 to 2016

Year

Cluster time frame

Observed*

Expected*

RR

LLR

P

2012

2012/2 to 2012/7

27 075

19 649.54

2.20

2856.35

0.001

2013

2013/2 to 2013/7

28 463

21 564.29

1.93

2223.25

0.001

2014

2014/3 to 2014/8

38 903

28 291.64

2.22

4123.72

0.001

2015

2015/3 to 2015/7

33 492

23 888.54

1.98

3265.39

0.001

2016

2016/3 to 2016/8

31 495

23 698.30

1.99

2631.76

0.001

2012–2016

2014/1 to 2015/12

113 111

97 193.89

1.31

2138.16

0.001

  1. Observed*: Number of Observed cases in a cluster
  2. Expected*: Number of Expected cases in a cluster
  3. RR Relative risk, LRR Log-likelihood ratio
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