Table 1.

Correlations between the normalized concentration (Mol%) of serum lipid species with OA severity and synovitis

		Male		Female
Predictor variables		OA	Synovitis	OA	Synovitis
		r	r	r	r
SFAs	Myristic acid	− 0.20	− 0.23	0.13	0.17
	Pentadecylic acid	− 0.09	− 0.18	0.12	0.11
	Palmitic acid	0.18	− 0.01	− 0.10	0.09
	Stearic acid	− 0.25	− 0.02	− 0.06	− 0.16
	Docosanoic acid	0.00	0.45*	0.22	0.02
MUFAs	Myristoleic acid	− 0.21	− 0.30	0.08	0.14
	Palmitoleic acid	0.19	− 0.15	− 0.04	0.18
	Oleic acid	0.10	− 0.14	− 0.03	0.15
	Eicosenoic acid	− 0.16	− 0.07	− 0.09	0.15
	Nervonic acid	0.02	− 0.41*	0.09	− 0.02
ω-6 FAs	Linoleic acid	− 0.27	0.14	0.14	− 0.16
	γ-Linolenic acid	0.51**	0.18	0.04	− 0.27
	Eicosadienoic acid	0.11	0.23	0.12	0.01
	Arachidonic acid	0.12	0.07	− 0.02	0.02
	Osbond acid	0.56**	− 0.09	− 0.08	0.22
ω-3 FAs	α-Linolenic acid	− 0.13	− 0.22	0.05	− 0.06
	Stearidonic acid	− 0.14	− 0.29	− 0.12	− 0.01
	ETA	− 0.11	0.20	0.10	0.13
	EPA	− 0.39*	− 0.12	− 0.03	− 0.32*
	DPA	− 0.09	− 0.42*	− 0.15	− 0.20
	DHA	− 0.06	0.04	− 0.02	− 0.10
ω-6/ω-3 FA ratio		0.09	0.14	0.12	0.1

ETA eicosatetraenoic acid, EPA eicosapentaenoic acid, DPA all-cis-7,10,13,16,19-docosapentaenoic acid, DHA docosahexaenoic acid. p values less than 0.05 are shown in bold. *p < 0.05; **p < 0.01