Fatty Liver as a Potential Surrogate for Waist Circumference in the Diagnosis of Metabolic Syndrome: A Population-Based Study among Chinese Adults

Table 3

The values of insulin resistance and MetS z-score of 2, 3, or 4 disorder combinations of the study population, grouped by WC and NAFLD.

	Normal WC		Abnormal WC
	Without NAFLD (1)	With NAFLD (2)	Without NAFLD (3)	With NAFLD (4)
Having 2 disorders (exclude WC)
Insulin, pmol/L	30 (21.6, 41.7)	35.6 (25.6, 51.43)^a	38.95 (27.8, 53.65)	46.9 (33.2, 64.83)
HOMA-IR	1.10 (0.81, 1.52)	1.35 (0.89, 1.81)^a	1.39 (1.01, 1.99)	1.74 (1.19, 2.45)
MetS z-score (4 factors)	−0.82 (−1.80, 0.11)	−0.20 (−1.13, 0.74)^a	−0.39 (−1.20, 0.63)	0.09 (−0.83, 1.23)
Having 3 disorders (exclude WC)
Insulin, pmol/L	33.3 (25.18, 46.15)	39.15 (27, 55.95)	42.2 (29.55, 57.6)	52.5 (37.7, 75.2)
HOMA-IR	1.27 (0.93, 1.82)	1.57 (1.10, 2.13)	1.62 (1.15, 2.41)	2.14 (1.51, 3.20)
MetS z-score (4 factors)	0.88 (−0.09, 2.07)	1.54 (0.40, 2.67)	1.46 (0.26, 2.86)	1.76 (0.69, 3.69)
Having 4 disorders (exclude WC)
Insulin, pmol/L	41.1 (27.85, 64)	52.15 (30.48, 63.5)	45.3 (32.65, 66.4)	60.1 (41.4, 83.75)
HOMA-IR	1.62 (1.26, 2.49)	2.15 (1.40, 3.10)	1.95 (1.33, 2.80)	2.73 (2.01, 4.10)
MetS z-score (4 factors)	2.74 (1.52, 5.93)	3.22 (1.56, 5.83)	2.68 (1.51, 4.17)	4.79 (2.77, 7.40)

Data were shown as median (interquartile range). Having n disorders means disorder combinations from abnormal BG, TG, HDL, and BP; MetS z-score (4 factors) includes BG, TG, HDL, and BP z-scores. Abdominal WC: WC ≥ 90 cm for males and WC ≥ 80 cm for females; normal WC: <90 cm for males and <80 cm for females. Data were analyzed by adjusting for age and sex. value of <0.05 normal WC with NAFLD (2) compared with normal WC without NAFLD (1). All parameters showed no differences between normal WC with NAFLD (2) and abnormal WC without NAFLD (3).