Table 2 Pearson correlation coefficient (𝛾) between metabolic factors and ultrasound quantitative parameters.

Variables	LDA-texture index	SNR	CFDS slope
Variables	r	r	r
BMI (kg/m²)	0.42^***	0.45^***	0.21^***
WC (cm)	0.41^***	0.48^***	0.22^***
SBP (mmHg)	0.40^***	0.41^***	0.24^***
DBP (mmHg)	0.37^***	0.35^***	0.18^***
FATPER (%)	0.16^**	0.23^***	0.10^*
VFR	0.40^***	0.49^***	0.20^***
FPG (mmol/L)	0.21^***	0.25^***	0.14^**
TCHO (mmol/L)	0.14^**	0.21^***	0.19^***
TG^# (mmol/L)	0.37^***	0.41^***	0.27^***
HDL-C^# (mmol/L)	−0.33^***	−0.28^***	−0.15^**
LDL-C (mmol/L)	0.20^***	0.25^***	0.20^***
HOMA-IR^#	0.31^***	0.32^***	0.24^***
ALT (µkat/L)	0.41^***	0.34^***	0.24^***

^a#Variable was managed by logarithmic transformation.
^br: Pearson correlation coefficient.
^c*P < 0.05; ^**P < 0.01; ^***P < 0.001.
^dAbbreviations: ALT: alanine aminotransferase; BMI: body mass index; CFDS: center frequency downshift; DBP: diastolic blood pressure; FATPER: fat percentage; FPG: fasting plasma glucose; HDL-C: high-density lipoprotein cholesterol; HOMA-IR: homeostasis model assessment of insulin resistance; LDA-texture: linear discriminant analysis was applied to combine the texture features; LDL-C: low-density lipoprotein cholesterol; SBP: systolic blood pressure; SNR: signal-to-noise ratio; TCHO: total cholesterol; TG: triglycerides; VFR: visceral fat rating; WC: waist circumference.

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