highly significantp < 0.0001
Level of correlation between IHI and PNGIMR on KD60 and M24 in WHO cone bioassays Correlation between IHI and PNGIMR results was statistically highly significant but with a stronger association between M24 results (r = 0.9, p < 0.0001, n = 20) than between KD60 results (r = 0.6, p = 0.002, n = 20) (Fig. 3 ).