Fig. 4From: Powerful and robust non-parametric association testing for microbiome data via a zero-inflated quantile approach (ZINQ)Empirical quantile functions (quantiles of normalized abundance (quantile) vs. quantile levels (Ï„)) stratified by with / without HBP for two typical taxa detected by ZINQ exclusively, with dashed horizontal lines indicating the two group means, which are close or identical in the examples. a Spindle shape, HBP is associated with lower Eubacterium abundance (rarefied) when the microbe is abundant. b Crossing, HBP is associated with lower Haemophilus abundance (CSS normalized) when the microbe is at a low level, but with higher abundance when the microbe is abundantBack to article page