The geographic distribution patterns of HIV-, HCV- and co-infections among drug users in a national methadone maintenance treatment program in Southwest China

Table 5 Cluster information for HIV/HCV co-infection among MMTP clients, using the geographic scan statistic in Southwest China

Type of cluster	Number of towns	Coordinates	Radius (Km)	Population	Number of cases	Relative risk	Log likelihood ratio	Pvalue
Most likely high risk cluster	92	28.5087 N, 103.0829 E	55.71	1163	323	4.43	180.48	0.0001
Secondary low risk cluster	163	27.2293 N, 102.8077 E	88.14	2710	134	0.29	103.25	0.0001
Secondary low risk cluster	35	28.3288 N, 101.9280 E	46.04	262	7	0.24	13.08	0.0016

ISSN: 1471-2334