Table 2. Simple linear regression analysis using muscle mass (SMM or ASM) as dependent variable in 111 HD subjects ¹ .

	SMM				ASM
	β	95% CI	R2	P value	β	95% CI	R2	P value
Univariate significant
n-3 PUFA intake, g/day	1.160	0.396 to 1.924	0.077	0.003	1.043	0.419 to 1.667	0.091	0.001
Ratio of n-6/n-3 PUFA, g/day	-0.161	-0.315 to -0.007	0.038	0.041	-0.162	-0.287 to -0.036	0.057	0.012
BMI, kg/m2	0.721	0.467 to 0.976	0.225	< .0001	0.576	0.365 to 0.788	0.211	< .0001
Creatinine, mg/dL	1.257	0.797 to 1.717	0.212	< .0001	1.011	0.629 to 1.393	0.201	< .0001
eKt/V	-11.014	-13.561 to -8.468	0.402	< .0001	-9.052	-11.155 to -6.949	0.395	< .0001
Nonsignificant relevant covariates
Dialysis vintage, year	-0.183	-0.377 to 0.012	0.031	0.066	-0.155	-0.315 to 0.006	0.032	0.059
HOMA-IR	0.124	-0.075 to 0.323	0.014	0.220	0.104	-0.060 to 0.268	0.014	0.213
hs CRP, mg/dL	1.092	-0.236 to 2.420	0.023	0.106	1.080	-0.009 to 2.169	0.034	0.052

Abbreviations: SMM, skeletal muscle mass; ASM, appendicular skeletal muscle mass; HD, hemodialysis; BMI, body mass index; PUFA, polyunsaturated fatty acid; eKt/V: equilibrated Kt/V; HOMA-IR, homoeostasis model assessment-estimated insulin resistance; hs CRP, high-sensitivity C reactive protein; CI, confidence interval

¹β refers to the regression coefficient that demonstrated the change in muscle mass per kg change in the exposure variable