Skip to main content

Table 3 Means (± standard deviations), or percentages, for characteristics of each particle diameter group

From: A clustering analysis of lipoprotein diameters in the metabolic syndrome

  1 2 3 4 5 6 7 8 p-value *
N 200 51 242 237 176 43 7 80  
α† .76 (.16; .76-.80) .80 (.18; .75-.85) .74 (.18; .72-.76) .72 (.16; .7-.74) .74 (.16; .72-.76) .78 (.17; .73-.83) .998 (.01; .99-1.00) .82 (.18; .78-.86)  
Male, % 72 61 60 44 28 19 43 14 < 0.0001
Age, y 50.5 (15.0) 50.9 (14.8) 50.6 (15.6) 46.8 (16.7) 47.5 (16.5) 41.1 (17.5) 53.8 (26.1) 49.7 (16.3) 0.001
Average particle diameter (nm)
VLDL 53.1 (3.33) 65.7 (4.9) 45.6 (3.1) 53.6 (3.4) 45.3 (3.0) 64.2 (5.2) 98.1 (14.6) 50.4 (4.1) < 0.0001
LDL 19.8 (.4) 20.1 (.6) 20.4 (.4) 21.1 (.4) 21.5 (.4) 21.7 (.6) 21.9 (.6) 22.2 (.4) < 0.0001
HDL 8.4 (.2) 8.5 (.2) 8.6 (.2) 9.0 (.2) 9.2 (.2) 9.4 (.3) 9.7 (.3) 9.7 (.3) < 0.0001
Distributions of lipoprotein subfractions (sera concentrations; nmol/L)
VLDL
Small 39.5 (25.6) 26.2 (17.3) 43.5 (23.8) 27.6 (14.3) 32.6 (18.2) 11.1 (8.7) 4.6 (7.0) 18.6 (14.2) < 0.0001
Medium 61.2 (37.5) 45.6 (51.3) 44.4 (33.7) 27.8 (34.0) 28.1 (24.4) 8.9 (7.3) 3.0 (2.3) 17.7 (14.8) < 0.0001
Large 7.88 (5.5) 17.8 (24.6) 1.8 (1.9) 3.8 (5.3) .8 (1.0) 1.4 (2.3) .4 (0.4) .9 (1.3) < 0.0001
LDL          
Very small 1208.4 (400.9) 1005.9 (359.3) 886.2 (374.8) 546.5 (266.4) 364.7 (227.4) 298.9 (273.0) 274.1 (219.1) 171.0 (156.8) < 0.0001
Small 1516.6 (462.2) 1313.9 (466.4) 1178.7 (410.5) 745.2 (289.2) 528.1 (256.7) 431.0 (333.6) 351.0 (270.5) 215.4 (190.0) < 0.0001
Medium small 308.2 (123.4) 308.1 (219.5) 292.5 (212.1) 198.6 (176.6) 163.4 (190.9) 132.1 (174.0) 76.89 (55.88) 44.7 (38.15) < 0.0001
Large 154.6 (116.1) 238.5 (215.7) 291.3 (146.7) 470.8 (189.7) 560.7 (228.3) 630.1 (192.4) 775.99 (271.34) 746.86 (245.26) < 0.0001
HDL          
Small 25.0 (5.0) 24.6 (5.4) 23.7 (4.9) 20.6 (4.7) 19.9 (5.1) 16.4 (4.9) 16.58 (4.74) 17.89 (4.51) < 0.0001
Medium 1.5 (2.7) 2.7 (3.3) 1.9 (2.5) 4.3 (3.9) 4.0 (4.2) 5.8 (4.2) 3.22 (5.22) 2.43 (3.02) < 0.0001
Large 3.0 (1.7) 3.3 (1.9) 4.6 (1.8) 6.9 (2.4) 8.7 (2.3) 10.0 (2.5) 11.50 (3.41) 12.42 (2.44) < 0.0001
Sera lipoprotein particle concentrations (nmol/L)
VLDL 108.6 (51.4) 76.4 (54.2) 80.4 (39.1) 58.5 (38.7) 61.2 (29.8) 28.8 (12.6) 11.60 (5.21) 42.19 (20.69) < 0.0001
LDL 1760.0 (469.2) 1624.3 (488.8) 1520.8 (424.6) 1202.6 (353.6) 1086.4 (330.6) 1025.0 (338.5) 1050.72 (205.79) 969.10 (304.47) < 0.0001
HDL 29.1 (5.5) 30.2 (5.3) 29.4 (5.7) 31.0 (5.5) 31.7 (5.1) 31.8 (5.5) 31.89 (6.44) 32.01 (5.19) < 0.0001
  1. *Controls for family structure; Values in the table are means+/-SD, etc.
  2. † α is the internal reliability of the class and values above 0.70 are considered reliable [18].