Association between Hemoglobin Levels and Colorectal Polyps in Asymptomatic Chinese Adults

Table 1

Characteristics of study participants with and without colorectal polyps.

Variables	With colorectal polyps	Without colorectal polyps	value	value
(male/female)	449 (359/90)	1184 (764/420)	36.081^a	<0.001
Age (years)	52.1 (8.7)	49.1 (9.4)	5.925	<0.001
Waist circumference (cm)	89.1 (9.1)	85.5 (9.2)	6.993	<0.001
Body mass index (kg/m^2)	25.09 (3.18)	24.18 (3.18)	5.157	<0.001
Systolic blood pressure (mmHg)	130.4 (16.7)	126.9 (17.7)	3.639	<0.001
Diastolic blood pressure (mmHg)	79.5 (10.8)	77.1 (11.8)	3.711	<0.001
Alanine aminotransferase (U/L)	22.0 (16.0–30.0)	19.0 (14.0–28.0)	4.171^b	<0.001
Aspartate aminotransferase (U/L)	21.0 (18.0–25.0)	20.0 (17.0–25.0)	2.641^b	0.008
γ-Glutamyltransferase (U/L)	32.0 (21.0–54.0)	25.0 (16.0–44.0)	5.647^b	<0.001
Triglyceride (mmol/L)	1.64 (1.16–2.43)	1.42 (0.99–2.11)	4.825^b	<0.001
Total cholesterol (mmol/L)	4.78 (4.25–5.43)	4.61 (4.08–5.24)	3.376^b	0.001
HDL cholesterol (mmol/L)	1.13 (0.93–1.33)	1.20 (1.00–1.44)	4.058^b	<0.001
LDL cholesterol (mmol/L)	2.75 (2.27–3.30)	2.61 (2.17–3.14)	3.169^b	0.002
Fasting plasma glucose (mmol/L)	4.85 (4.50–5.35)	4.78 (4.41–5.19)	2.975^b	0.003
Serum uric acid (μmol/L)	366.3 (85.4)	343.1 (88.1)	4.779	<0.001
Carcinoembryonic antigen (μg/L)	2.00 (1.50–2.90)	1.80 (1.30–2.60)	5.001^b	<0.001
Hemoglobin (g/L)	151.9 (14.7)	145.9 (16.4)	6.795	<0.001

Data are expressed as the mean (SD) or median (IQR). ^a value. ^b value. HDL: high-density lipoprotein; LDL: low-density lipoprotein.