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Table 1 Baseline characteristics

From: Association of serum hemoglobin level with the risk of carotid plaque beyond metabolic abnormalities among asymptomatic adults without major adverse clinical events: a cross-sectional cohort study

   Quartiles of Hb p value
Total
(n = 2,560)
I (lowest)
(≤ 12.8 g/dL)
(n = 647)
II
(12.9–13.6 g/dL)
(n = 725)
III
(13.7–14.5 g/dL)
(n = 585)
IV (highest)
(≥ 14.6 g/dL)
(n = 603)
Age (years) 60.4 ± 7.9 60.8 ± 7.8 60.3 ± 7.3 60.9 ± 7.7 59.7 ± 8.7 0.029
Male sex, n (%) 842 (32.9) 56 (8.7) 82 (11.3) 193 (33.0) 511 (84.7)  < 0.001
BMI (kg/m2) 24.9 ± 3.0 24.3 ± 3.0 24.7 ± 2.9 25.1 ± 3.0 25.4 ± 2.9  < 0.001
Waist circumference (cm) 83.8 ± 8.5 80.9 ± 8.3 82.4 ± 8.3 84.4 ± 8.3 87.9 ± 7.5  < 0.001
Systolic BP (mmHg) 122.8 ± 15.1 119.2 ± 15.4 121.3 ± 14.7 124.0 ± 14.7 127.2 ± 14.5  < 0.001
Diastolic BP (mmHg) 73.9 ± 9.8 70.4 ± 9.7 72.2 ± 9.3 75.0 ± 8.9 78.7 ± 9.3  < 0.001
Hypertension, n (%) 1,273 (49.7) 297 (45.9) 341 (47.0) 299 (51.1) 336 (55.7) 0.002
Diabetes mellitus, n (%) 411 (16.1) 93 (14.4) 88 (12.1) 100 (17.1) 130 (21.6)  < 0.001
Hyperlipidemia, n (%) 938 (36.6) 268 (41.4) 275 (37.9) 212 (36.2) 183 (30.3) 0.001
Smoking, n (%) 695 (27.1) 51 (7.9) 85 (11.7) 170 (29.1) 389 (64.5)  < 0.001
Total cholesterol (mg/dL) 199.3 ± 36.2 198.2 ± 36.0 201.0 ± 37.2 199.9 ± 35.6 197.9 ± 35.9 0.364
Triglycerides (mg/dL) 129.0 ± 70.6 116.2 ± 61.9 120.5 ± 59.7 130.2 ± 66.8 151.9 ± 87.5  < 0.001
HDL-C (mg/dL) 54.4 ± 14.8 58.2 ± 14.9 55.8 ± 14.4 53.7 ± 14.5 49.2 ± 13.6  < 0.001
LDL-C (mg/dL) 121.6 ± 32.9 119.5 ± 32.6 123.2 ± 33.5 122.2 ± 32.5 121.3 ± 32.9 0.208
Fasting glucose (mg/dL) 101.3 ± 20.6 96.8 ± 15.1 98.5 ± 18.0 102.7 ± 21.3 108.1 ± 25.8  < 0.001
Creatinine (mg/dL) 0.79 ± 0.19 0.74 ± 0.20 0.73 ± 0.14 0.79 ± 0.18 0.91 ± 0.17  < 0.001
  1. Values are presented as mean ± standard deviation or number (%)
  2. BMI, body mass index; BP, blood pressure; Hb, hemoglobin; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; MetS, metabolic syndrome