. Author manuscript; available in PMC: 2021 Jul 1.

Published in final edited form as: Equine Vet J. 2020 Oct 29;53(4):690–700. doi: 10.1111/evj.13345

TABLE 5.

The odds ratio (OR), sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for the P2, P3 and P4 variants in PSSM2/MFM horses by breed. P3a and P3b were in complete linkage disequilibrium

	Variant	OR		Sensitivity		Specificity		PPV		NPV
	Variant		CI		CI		CI		CI		CI
PSSM2/MFM-WB	P2	2.07	0.82–5.12	0.27	0.18–0.38	0.85	0.73–0.92	0.69	0.50–0.84	0.48	0.38–0.58
	P3	1.31	0.43–3.75	0.12	0.06–0.23	0.91	0.80–0.96	0.62	0.36–0.82	0.45	0.36–0.54
	P4	1.35	0.56–3.36	0.24	0.15–0.34	0.82	0.69–0.90	0.62	0.43–0.78	0.46	0.36–0.56
PSSM2/MFM-AR	P2	2.00	0.60–7.05	0.33	0.19–0.51	0.80	0.63–0.90	0.63	0.39–0.82	0.55	0.40–0.68
	P3	1.00	0.05–19.6	0.03	0.002–0.17	0.97	0.83–0.99	0.50	0.03–0.98	0.50	0.38–0.63
	P4	1.62	0.45–5.56	0.20	0.09–0.37	0.87	0.70–0.95	0.60	0.31–0.83	0.52	0.39–0.65

Note: None of the calculated values reached statistical significance (P < .05).

Abbreviations: AR, Arabian; MFM, Myofibrillar Myopathy; NPV, negative predictive value; PPV, positive predictive value; PSSM2, Polysaccharide storage myopathy type 2; WB, Warmblood.