TABLE 2.

Mean (+ SD) for demographic and lipoprotein characteristics from the GOLDN study population

	Discovery Subsample (N = 663)	Replication Subsample (N = 331)	Pa
Demographic measures
Age, years	48.6 (16.4)	47.7 (16.2)	0.37
Gender, % male	47.0	49.2	0.52
Data collection center, % Minnesota	49.5	48.3	0.74
Lipoprotein parameters
HDL parameters
Concentration of large particles, nM	6.3 (3.5)	6.3 (3.6)	0.90
Concentration of medium particles, nM	3.0 (3.7)	2.88 (3.4)	0.59
Concentration of small particles, nM	21.7 (5.3)	21.5 (5.8)	0.71
Total particles, nM	40.0 (5.6)	30.7 (5.8)	0.43
Average diameter, nm	8.9 (0.4)	8.8 (0.5)	0.47
LDL parameters
Concentration of large particles, nM	412.8 (263.6)	403.5 (304.6)	0.62
Concentration of small particles, nM	938.9 (547.4)	923.9 (554.8)	0.69
Total particles, nM	1,393.8 (460.0)	1,369.5 (1,369.5)	0.44
Average diameter, nm	20.80 (0.86)	20.8 (0.9)	0.67
IDL parameters
Total particles, nM	42.1 (51.5)	42.2 (55.31)	0.98
VLDL parameters
Concentration of large particles, nM	3.9 (5.8)	3.6 (6.6)	0.51
Concentration of medium particles, nM	38.3 (38.1)	36.5 (34.6)	0.44
Concentration of small particles, nM	33.0 (21.9)	31.8 (21.5)	0.43
Total particles, nM	75.2 (51.7)	72.0 (48.2)	0.34
Average diameter, nm	51.6 (7.9)	51.6 (8.1)	0.95

^aP value from Chi-square test with 1 degree of freedom (age, center of data collection) or t-test (all other variables) of group differences revealed nonsignificant group differences for all tests.