Skip to main content

Table 1 Baseline characteristics across quartiles of baseline SUA in the CHARLS

From: Association between baseline and changes in serum uric acid and incident metabolic syndrome: a nation-wide cohort study and updated meta-analysis

Baseline characteristics

Quartiles of baseline SUA†

P value*

Quartile 1 (N = 941)

Quartile 2 (N = 948)

Quartile 3 (N = 944)

Quartile 4 (N = 946)

Men, n (%)

445 (47.3)

446 (47.0)

446 (47.2)

446 (47.1)

0.999

Age, mean (SD), years

58.7 (8.5)

59.1 (8.5)

59.6 (8.7)

60.8 (9.0)

 < 0.001

BMI, mean (SD), kg/m2

22.4 (3.3)

22.5 (3.4)

22.7 (3.0)

23.1 (3.4)

 < 0.001

Urban residence, n (%)

232 (24.7)

254 (26.8)

320 (33.9)

324 (34.2)

 < 0.001

Illiterate, n (%)

269 (28.6)

267 (28.2)

245 (26.0)

263 (27.8)

0.665

Married, n (%)

837 (88.9)

851 (89.8)

851 (90.1)

829 (87.6)

0.304

Current smokers, n (%)

316 (33.6)

298 (31.4)

284 (30.1)

297 (31.4)

0.640

Current alcohol drinkers, n (%)

218 (23.2)

224 (23.6)

260 (27.5)

268 (28.3)

0.001

WC, mean (SD), cm

81.6 (8.4)

82.3 (8.7)

82.8 (8.5)

84.0 (9.4)

 < 0.001

Systolic BP, mean (SD), mmHg

124.2 (19.1)

125.2 (20.1)

126.5 (20.5)

129.3 (20.5)

 < 0.001

Diastolic BP, mean (SD), mmHg

73.2 (11.4)

73.0 (11.6)

73.9 (12.0)

75.0 (11.7)

0.001

FBG, mean (SD), mg/dL‡

105.0 (33.6)

102.6 (21.5)

102.7 (19.6)

103.1 (21.0)

0.105

TG, mean (SD), mg/dL‡

95.5 (44.1)

97.0 (44.5)

103.9 (58.2)

113.1 (59.5)

 < 0.001

HDL–C, mean (SD), mg/dL‡

54.3 (14.0)

55.3 (14.1)

55.1 (14.4)

54.5 (14.1)

0.358

Serum creatine, mean (SD), mg/dL

0.69 (0.15)

0.74 (0.15)

0.77 (0.16)

0.85 (0.22)

 < 0.001

eGFR, mean (SD), mL/min/1.73 m2

99.4 (10.6)

95.1 (11.6)

92.8 (11.7)

85.9 (15.2)

 < 0.001

  1. BMI, body mass index; BP, blood pressure; CHARLS, China Health and Retirement Longitudinal Study; eGFR, estimated glomerular filtration rate; FBG, fasting blood glucose; HDL-C, high density lipoprotein cholesterol; SUA, serum uric acid; TG, triglycerides; WC, waist circumference
  2. †Cut-off values of baseline SUA quartiles in men: < 3.9 mg/dL, 3.9 to < 4.7 mg/dL, 4.7 to < 5.2 mg/dL, ≥ 5.2 mg/dL. Cut-off values of baseline SUA quartiles in women: < 3.2 mg/dL, 3.2 to < 3.7 mg/dL, 3.7 to < 4.3 mg/dL, ≥ 4.3 mg/dL
  3. *ANOVA (for continuous variables) and chi-square test (for categorical variables) were used to compare basic characteristics across SUA quartile groups
  4. ‡Conversion factors for units: FBG in mg/dL to mmol/L, × 0.0555; TG in mg/dL to mmol/L, × 0.0113; HDL-C in mg/dL to mmol/L, × 0.0259
Back to article page

Nutrition & Metabolism

ISSN: 1743-7075

Contact us