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Table 3 Spatial clusters of STHs prevalence in Shandong Province

From: The prevalence of soil transmitted helminths and its influential factors in Shandong Province, China: an analysis of surveillance data from 2016 to 2020

Clusters

Covering counties

Radius (km)

Number of cases

Expected cases

LLR

RR

P-value

Primary cluster (a)

Lanshan, Donggang, Junan, Wulian, Juxian, Hedong, Linshu, Yinan

76.35

360

93.58

279.91

6.08

 < 0.001

Secondary cluster 1 (b)

Juxian, Wulian, Yishui, Yinan, Donggang, Lanshan, Junan

51.05

319

81.71

244.74

5.76

 < 0.001

Secondary cluster 2 (c)

Huancui, Wendeng, Rongcheng, Zhifu, Fushan, Haiyang

106.39

250

69.55

166.08

4.73

 < 0.001

Secondary cluster 3 (d)

Hedong, Lanshan, Linshu

30.55

122

81.32

10.08

1.59

0.001

  1. STHs Soil-transmitted helminths, LLR Log-likelihood ratio, RR Relative risk