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Table 1 Basic characteristics of the study population by sex

From: Association of sleep duration with apolipoproteins and the apolipoprotein B/A1 ratio: the China health and nutrition survey

 

Men

Women

 

Characteristic

n = 3463

n = 3918

 

Age (years)

50.1 (39.3–59.6)

49.9(40–59.3)

0.586

Education < high school (%)

71.3

79.2

0.0001

Rural region (%)

68.7

67.4

0.236

Current smoking (%)

56.1

3.7

0.0001

Drinking (%)

61.6

9.3

0.0001

Medical history

 Hypertension (%)

11.7

12.6

0.245

 Diabetes (%)

3.4

2.2

0.003

Systolic blood pressure (mmHg)

121(113–133)

120(110–131)

0.0001

Diastolic blood pressure (mmHg)

81(75–89)

80(71–85)

0.0001

BMI (kg/m2)

23.2 (21–25.5)

23.1(21–25.6)

0.969

WC (cm)

84(77–91)

80(74–88)

0.0001

FPG (mg/dl)

92.3(84.9–102.1)

91.4(84.6–99.9)

0.001

HbA1c (%)

5.5(5.2–5.8)

5.5(5.2–5.8)

0.232

Hs-CRP (mg/l)

1(1–2)

1(0–2)

0.0001

Uric acid (mg/dl)

5.7(4.8–6.8)

4.3(3.6–5.2)

0.0001

Total cholesterol (mg/dl)

182.9(160.1–208.4)

185.2(160.5–212.7)

0.014

Triglycerides (mg/dl)

116(77.9–189.5)

108.1(74.4–162.1)

0.0001

HDL-C (mg/dl)

50.7(42.5–60.7)

55.3(47.1–64.6)

0.0001

LDL-C (mg/dl)

110.6(88.9–133)

113.3(90.9–138.8)

0.0001

ApoA1(mg/dl)

1.07(0.92–1.27)

1.12(0.97–1.3)

0.0001

ApoB (mg/dl)

0.88(0.72–1.07)

0.88(0.71–1.07)

0.563

Apo B/Apo A1

0.81(0.63–1.03)

0.76(0.6–0.96)

0.0001

LPA (mg/dl)

7.2(3.5–15.3)

8.4(4.5–17.8)

0.0001

Sleep duration (hours)

8(7–8)

8(7–8)

0.053

  1. BMI: body mass index; WC: waist circumference; FPG: fast plasma glucose; HbA1c: haemoglobin A1c; Hs-CRP: hs-C-reactive protein; HDL-C: high density lipoprotein cholesterol; LDL-C: low density lipoprotein cholesterol; ApoB: apolipoprotein B; ApoA1: apolipoprotein A1; LAP: lipid accumulation product