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Table 3 Characteristics of the male participants across sleep duration

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

  5 to 6 7 to 8 9 to 10
N (%) 303(9.2) 2362(68.2) 738(22.6)
Age (years) 54.6(45.1–63.6)* 49(39.1–58.6) 51.2(37.8–61.4)#
Education < high school (%) 72.3 69.3 77.8*
Rural region (%) 55* 69 73.1#
Current smoking (%) 59.4 56.1 55.2
Drinking (%) 64.8 62.5 57.3*#
Medical history
 Hypertension (%) 16.4* 10.2 14.6*
 Diabetes (%) 4.4 3.2 3.4
Systolic blood pressure (mmHg) 122(115–138) 121(114–132) 121(112–135)
Diastolic blood pressure (mmHg) 81(77–90) 81(76–89) 80(73–88)*#
BMI (kg/m2) 23.2(21–25.8) 23.3(21.1–25.5) 23(20.7–25.4)*
WC (cm) 84.7(78–92) 84.5(77.4–91.3) 83.2(76–90.4)*#
FPG (mg/dl) 92.9(83.9–104.6) 92.5(85.1–102.1) 91.6(84.6–101.2)
HbA1c (%) 5.5(5.3–5.9) 5.5(5.2–5.8) 5.5(5.2–5.8)
Hs-CRP (mg/l) 1(1–3) 1(1–2) 1(1–2)
Uric acid (mg/dl) 5.7(4.7–6.7) 5.7(4.8–6.7) 5.7(4.8–6.6)
Total cholesterol (mg/dl) 181.8(160.1–213.1) 183.3(160.5–209.6) 180.6(158.1–204.8)
Triglycerides (mg/dl) 121.4(77.9–189.5) 116(77.9–192.4) 116.5(78–186.9)
HDL-C (mg/dl) 51.4(43.3–62.3) 50.3(42.1–61.1) 50.7(42.8–59.9)
LDL-C (mg/dl) 110.2(88.9–136.5) 110.6(89.3–133.8) 108.5(88.1–129.5)
ApoA1(mg/dl) 1.12(0.95–1.36)* 1.07(0.91–1.27) 1.06(0.92–1.24)#
ApoB (mg/dl) 0.9(0.74–1.12) 0.89(0.73–1.07) 0.85(0.71–1.03)*#
ApoB/apoA1 0.78(0.63–1.04) 0.82(0.63–1.04) 0.8(0.63–1)
LPA (mg/dl) 8.1(3.8–15.3) 6.9(3.4–15.1) 7.9(3.8–16)
  1. *P < 0.05 compared with the reference 7 to 8 h; #P < 0.05 compared with the reference 5 to 6 h; BMI: body mass index; WC: waist circumference; FPG: fast plasma glucose; HbA1c: hemoglobin 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