highly significantP = 1.25×10 -4
Nonetheless, the contingency table of type collected at each health facility ( Supplementary Table 4 , Supplementary File 1 ) reveals highly significant evidence to reject independence of type occurrence at each health facility (G statistic = 849.7, dof = 704, P = 1.25×10 -4 ) in favour of clustering of type occurrence by health facility.