Table 2.

Diagnostic performance of incidence-based psoriasis predictor

Group	Positive for OTU (%) a		Double positive b	Odds ratio
	Acidobacteria Gp4 (3,855)	Schlegelella (13,613)		Lesion (95% CI)	Unaffected (95% CI)
Control	80	96	78	0.073 (0.024 to 0.203)	0.329 (0.123 to 0.838)
Unaffected	61	69	53	0.220 (0.080 to 0.566)
Lesion	39	49	20

^aThe only two taxa significant at 5% FDR within all OTUs with >1% mean abundance.

^bχ² = 33.9, df = 2, P value <0.0000001.

OTU operational taxonomical unit.