Spatial–temporal pattern and risk factor analysis of bacillary dysentery in the Beijing–Tianjin–Tangshan urban region of China

Table 1 Results for spatial cluster analysis of bacillary dysentery

Cluster	Center	Number of counties	Observed	Expected	LLR	RR
1*	(116.17° E, 39.93° N)	7	13711	8490.57	2092.42	2.18
2	(117.19° E, 39.12° N)	6	5325	3471.51	494.54	1.66
3	(117.14° E, 40.21° N)	1	655	389.70	76.06	1.7
4	(117.05° E, 39.74° N)	4	1656	1352.54	33.44	1.24

Note: * indicates the most likely cluster, the others indicate secondary cluster. LLR is log likely ratio, and RR is relative risk.

ISSN: 1471-2458