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Table 1 Baseline Characteristics of Study Participants by sex and abdominal obesity (n = 5727)

From: Influence of uric acid on the correlation between waist circumference and triglyceride glucose index: an analysis from CHARLS

Characteristic Men (n = 2663) Women (n = 3064) P Total
Baseline (2011)
 Age (years) 59.9 (8.57) 58.2 (8.58) < 0.001 59.0 (8.62)
Ethnicity, n (%)
 Han 2491 (93.5) 2820 (92.0) 0.029 5311 (92.7)
 Others 172 (6.5) 244 (8.0) 416 (7.3)
Education, n (%)
 Illiteracy 852 (32.0) 1853 (60.5) < 0.001 2705 (47.2)
 Primary school 764 (28.7) 572 (18.7) 1336 (23.3)
 Middle school 709 (26.6) 456 (14.9) 1165 (20.3)
 High school 222 (8.3) 146 (4.8) 368 (6.4)
 Tertiary high school or above 116 (4.4) 37 (1.2) 153 (2.7)
 Current smoking, n (%) 2010 (75.5) 240 (7.8) < 0.001 2250 (39.3)
 Drinking ≥1 times/month, n (%) 1214 (45.6) 225 (7.3) < 0.001 452 (7.9)
 SBP (mmHg) 129.7 (19.96) 130.0 (21.59) 0.537 129.8 (20.85)
 DBP (mmHg) 75.9 (12.34) 75.4 (11.70) 0.121 75.6 (12.00)
 HR (beats/min) 71.9 (10.79) 72.4 (9.70) 0.051 72.2 (10.22)
 HDL-C (mg/dL) 48.33 (39.05–59.54) 50.26 (41.37–60.31) < 0.001 49.48 (40.21–59.92)
 LDL-C (mg/dL) 109.41 (89.30–131.44) 118.30 (96.26–142.66) < 0.001 114.05 (93.17–137.24)
 BMI (Kg/m2) 23.0 (3.56) 24.1 (3.94) < 0.001 23.6 (3.81)
 Waist Circumference (cm) 84.1 (11.83) 84.8 (12.81) 0.044 84.5 (12.37)
 Uric Acid (mg/dL) 4.88 (1.233) 3.98 (1.042) < 0.001 4.40 (1.221)
 Creatinine (mg/dL) 0.87 (0.189) 0.69 (0.136) < 0.001 0.77 (0.186)
 FPG (mmol/L) 6.10 (1.931) 6.12 (1.925) 0.686 6.11 (1.928)
 TG (mmmol/L) 1.43 (1.147) 1.55 (1.025) < 0.001 1.50 (1.085)
 TyG* 6.33 (0.669) 6.44 (0.643) < 0.001 6.39 (0.658)
Follow-up (2015)
 Current smoking, n (%) 1392 (52.3) 167 (5.5) < 0.001 1559 (27.2)
 Drinking ≥1 times/month, n (%) 1187 (44.6) 243 (7.9) < 0.001 1430 (25.0)
 SBP (mmHg) 130.5 (19.73) 129.4 (20.23) 0.032 129.9 (20.00)
 DBP (mmHg) 76.3 (11.35) 74.7 (10.89) < 0.001 75.4 (11.13)
 HR* 73.3 (11.19) 74.3 (10.19) 0.001 73.8 (10.68)
 HDL-C 48.26 (41.70–56.70) 51.35 (44.79–58.69) < 0.001 50.19 (43.24–57.92)
 LDL-C 96.52 (79.54–115.06) 105.79 (86.49–123.94) < 0.001 101.54 (83.01–120.08)
 BMI (Kg/m2) 23.2 (3.73) 24.3 (4.24) < 0.001 23.8 (4.05)
 Waist Circumference (cm) 84.3 (13.80) 85.7 (13.41) < 0.001 85.0 (13.61)
 Uric Acid (mg/dL) 5.46 (1.419) 4.48 (1.215) < 0.001 4.94 (1.403)
 Creatinine (mg/dL) 0.92 (0.304) 0.72 (0.207) < 0.001 0.81 (0.275)
 FPG (mmol/L) 5.75 (1.997) 5.82 (2.022) 0.207 5.79 (2.010)
 TG (mmmol/L) 1.51 (0.996) 1.73 (1.044) < 0.001 1.62 (1.028)
 TyG 6.34 (0.643) 6.50 (0.627) < 0.001 6.43 (0.640)
  1. Abbreviations: UA uric acid, WC waist circumference, TyG triglyceride-glucose, SBP systolic blood pressure, DBP diastolic blood pressure, HR heart rate, BMI body mass index, HDL-C high-density lipoprotein cholesterol, LDL-C low-density lipoprotein cholesterol, TG Triglycerides, FPG fasting blood glucose
  2. TyG = ln [fasting TG (mmol/L) * FPG (mmol/L) *0.5*159.37]
  3. BMI = Weight (kg)/height (m)2