Table 5 

Results of Kfunction spacetime clustering analyses for place of diagnosis and date of diagnosis^{a} 

ICCC^{b }code(s) 
Disease group 
Geographical distance^{c }(Pvalues) 
NN threshold^{d }(Pvalues) 


III(a) 
Ependymoma 
0.64 
0.81 


III(b) 
Astrocytoma 
0.31 
0.14 


III(a), III(b) 
Ependymoma and Astrocytoma 
0.67 
0.62 


III(c) 
PNET 
0.03^{e} 
0.01^{e} 


III(d) 
Other gliomas 
0.26 
0.55 


III(e), III(f) 
Other Specified and Unspecified 
0.79 
0.85 


III(af) 
All CNS tumours 
0.84 
0.92 


^{a}Cases are close in time if dates of diagnosis differ by <t, where t is in the range 0.1 year to 1.5 year. ^{b }International Classification of Childhood Cancer. ^{c}Cases are close in space if distances between their locations differ by <s, where s is in the range 0.57.5 km. ^{d}Cases are close in space if either one is within the distance to the N^{th }nearest neighbour of the other, where N ranges from 115. ^{e}Statistically significant (P < 0.05). 

McNally et al. BMC Cancer 2012 12:13 doi:10.1186/147124071213 