Table 3 Spatial cluster analysis in Shandong Province, 2005–2015
Phase | Infection source | Code | No. of counties | Proposed cluster timeframe | No. of cases | Expected cases | Population (10,000) | RR | p |
|---|---|---|---|---|---|---|---|---|---|
Control | Indigenous | a | 13 | Jan. 1 of 2006 to Dec. 31 of 2007 | 126 | 18.80 | 2165.7 | 9.78 | <0.001 |
b | 1 | Jan. 1 of 2008 to Dec. 31 of 2008 | 5 | 0.20 | 44.9 | 25.90 | 0.013 | ||
c | 1 | Jan. 1 of 2005 to Dec. 31 of 2005 | 6 | 1.10 | 254.3 | 5.51 | 0.698 | ||
Imported | d | 2 | Jan. 1 of 2005 to Dec. 31 of 2005 | 15 | 0.62 | 133.0 | 25.17 | <0.001 | |
e | 14 | Jan. 1 of 2005 to Dec. 31 of 2005 | 20 | 9.29 | 1994.4 | 2.22 | 0.856 | ||
f | 1 | Jan. 1 of 2008 to Dec. 31 of 2009 | 28 | 7.55 | 809.9 | 3.92 | <0.001 | ||
g | 4 | Jan. 1 of 2007 to Dec. 31 of 2007 | 15 | 3.91 | 840.2 | 3.95 | 0.037 | ||
h | 5 | Jan. 1 of 2008 to Dec. 31 of 2009 | 45 | 4.49 | 481.1 | 11.23 | <0.001 | ||
Elimination | Indigenous | i | 1 | Jan. 1 of 2010 to Dec. 31 of 2011 | 37 | 0.14 | 120.2 | 801.58 | <0.001 |
j | 1 | Jan. 1 of 2010 to Dec. 31 of 2011 | 4 | 0.46 | 411.7 | 9.19 | 0.732 | ||
Imported | k | 17 | Jan. 1 of 2013 to Dec. 31 of 2015 | 236 | 68.53 | 2970.6 | 4.54 | <0.001 | |
l | 1 | Jan. 1 of 2013 to Dec. 31 of 2015 | 17 | 2.48 | 107.5 | 6.99 | <0.001 | ||
m | 11 | Jan. 1 of 2013 to Dec. 31 of 2015 | 113 | 33.54 | 1453.7 | 3.78 | <0.001 |