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. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: Clin Chim Acta. 2016 Oct 15;463:129–137. doi: 10.1016/j.cca.2016.10.019

Table 4.

Age group specific estimates for within individual and between individual variability in HCHS/SOL by age group

Age Group: 18–44 y
Age Group: 45+ y
N CVI N Mean (SD) CVG CV(P+A) II N CVI N Mean (SD) CVG CV(P+A) II
LIVER ENZYME MEASURES
Alanine aminotransferase (U/l) 25 23.3 333 25.6
(1.42)
81.19 5.5 0.29 25 24.9 456 26.1
(1.76)
63.93 6.7 0.4
Aspartate aminotransferase (U/l) 25 17.1 334 23.1
(1.59)
48.66 6.9 0.38 25 11.4 453 24.4
(1.83)
49.15 7.5 0.28
GGT (U/l) 24 18.8 332 29
(1.26)
102.56 4.3 0.19 24 16.3 442 34
(2.73)
90 8 0.2
KIDNEY FUNCTION MEASURES
Cystatin C (mg/l) 25 5.3 332 0.71
(0.03)
18.47 3.6 0.35 24 5.1 438 0.84
(0.03)
26.89 3.5 0.23
Creatinine (mg/dl) 24 7.5 338 0.81
(0.05)
24.36 6.7 0.41 25 7 455 0.86
(0.06)
46.37 6.5 0.21
Urine creatinine, random (mg/dl) 25 43.9 399 164
(6.09)
53.59 3.7 0.82 26 38.7 519 133.5
(3.6)
54.22 2.7 0.72
Urine microalbumin, random (mg/dl) 23 67.2 389 23
(2.66)
353.52 11.6 0.19 21 38.2 490 34.6
(2.38)
442.52 6.9 0.09
Log Albumin/creatinine ratio (mg/g) 24 29.4 390 1.9
(0.14)
46.17 7.5 0.66 22 12.8 487 2.3
(0.08)
48.25 3.6 0.27
LIPID MEASURES
Total cholesterol (mg/dl) 25 7.6 336 185.5
(5.73)
19.97 3.1 0.41 26 6.1 451 207.1
(6.07)
18.95 2.9 0.36
Triglycerides (mg/dl) 25 22.3 336 120.9
(4.5)
72 3.7 0.31 26 18.4 453 143.6
(6.51)
62.6 4.5 0.3
HDL-cholesterol (mg/dl) 25 8.5 334 49.3
(1.45)
26.52 2.9 0.34 26 5.5 455 50.3
(1.68)
25.12 3.3 0.26
LDL-cholesterol (mg/dl) 25 9.3 329 112
(4.49)
26.93 4 0.37 26 10 439 127.8
(4.57)
26.41 3.6 0.4
DIABETES RELATED MEASURES
Insulin, fasting (mU/l) 25 34.3 338 12.7
(1.7)
64.64 134 0.57 25 22.2 429 13.1
(1.58)
83.09 12 0.3
Insulin, post OGTT (mU/l) 21 33.5 479 70.9
(6.45)
99.67 9.1 0.35 16 29.4 439 104.1
(7.91)
88.93 7.6 0.34
Glucose, fasting (mg/dl) 24 3.4 343 97.9
(2.79)
31.88 2.8 0.14 26 6.5 433 110.9
(2.95)
37.88 2.7 0.18
Glucose, post OGTT (mg/dl) 21 23.8 486 108.3
(4.12)
30.26 3.8 0.8 16 15.2 441 137.6
(4.06)
36.06 3 0.43
% Glycosylated Hemoglobin 27 2 421 5.5
(0.05)
16.62 0.9 0.14 30 2.4 505 6.1
(0.06)
21.49 1 0.12
IRON RELATED MEASURES
Ferritin (ug/l) 24 20.2 325 95.9
(3.84)
100.98 4 0.2 24 16.5 435 130.1
(6.99)
96.21 5.4 0.18
Iron (ug/dl) 25 34.7 332 87.9
(2.66)
38.59 3 0.9 25 23.5 451 88.7
(2.71)
36.77 3.1 0.64
Total Iron Binding Capacity (TIBC) (ug/dl) 25 5.2 336 327.4
(10.62)
14.94 3.2 0.41 26 4.9 453 318.9
(10.22)
14.58 3.2 0.4
% Transferrin saturation 25 35.1 333 27.7
(0.72)
42.94 2.6 0.82 25 29 452 28.7
(0.78)
40.62 2.7 0.72
INFLAMMATION MEASURES
High-sensitivity C-Reactive Protein (mg/l) 24 26.1 335 3.2
(0.16)
125.86 5.1 0.21 25 58.6 453 4.2
(0.19)
138.4 4.5 0.42
HEMATOLOGICAL MEASURES
Red Blood Count (×10e12) 26 2.8 421 4.8
(0.08)
8.42 1.7 0.39 30 2.3 500 4.7
(0.08)
8.84 1.7 0.33
White Blood Count (×10e9) 24 12.5 385 6.4
(0.36)
27.23 5.5 0.5 29 11 454 6.5
(0.36)
29.84 5.6 0.41
Platelet Count (×10e9) 26 6.7 421 255.5
(9.28)
24.87 3.6 0.31 30 7.3 496 248.3
(9.35)
27.04 3.8 0.3
Hemoglobin (g/dl) 26 3.2 420 13.8
(0.26)
10.82 1.9 0.34 30 2.7 500 13.6
(0.24)
10.21 1.8 0.32
% Hematocrit 26 3.3 419 41.9
(0.8)
9.41 1.9 0.41 30 3.4 501 41.6
(0.77)
8.94 1.9 0.43
Mean Corpuscular Volume (fl) 25 2.1 420 88.3
(0.61)
6.13 0.7 0.37 28 1.3 499 89.4
(0.6)
6.68 0.7 0.21
Mean Corpuscular Hemoglobin (pg) 25 1.2 421 29.1
(0.29)
7.12 1 0.21 30 1.2 500 29.1
(0.27)
7.04 0.9 0.21
Mean Corpuscular Hemoglobin Concentration (g/dl) 25 2.4 420 33
(0.38)
4.12 1.1 0.66 29 2.1 501 32.7
(0.33)
4.24 1 0.55
% Red Cell Distribution Width 26 3.2 423 13.5
(0.11)
9.02 0.8 0.37 29 2.1 499 13.8
(0.09)
9.07 0.6 0.24
% Neutrophils 24 10.2 382 55.4
(2.71)
18.21 4.9 0.62 30 14.3 451 53.9
(3.84)
20.1 7.1 0.8
% Lymphocytes 24 16.7 385 33.1
(2.32)
24.42 7 0.74 30 18.3 451 34
(3.28)
26.18 9.6 0.79
% Monocytes 23 9 385 8.1
(0.96)
26.47 12 0.57 29 21.1 450 8.1
(1.06)
28.38 13.2 0.88
% Eosinophils 24 28 387 2.8
(0.53)
92.67 18.6 0.36 29 37.7 451 3 (0.52) 93.66 17.3 0.44
% Basophils 24 66.4 385 0.5
(0.36)
79.72 75.7 1.26 30 75.2 452 0.6 (0.4) 79.33 67.8 1.28
Neutrophil Count (×10e9) 23 14.6 382 3.6
(0.32)
39.32 8.7 0.43 29 18.7 450 3.6
(0.37)
39.76 10.5 0.54
Lymphocyte Count (×10e9) 23 12.6 384 2.1
(0.14)
26.05 6.9 0.55 29 11.9 445 2.1
(0.16)
29.65 7.7 0.48
Monocyte Count (×10e9) 23 17.4 387 0.5
(0.07)
30.3 13.1 0.72 29 15.6 457 0.5
(0.08)
33.54 14.6 0.64
Eosinophil Count (×10e9) 24 28.8 389 0.2
(0.04)
96.31 20.8 0.37 29 26.5 456 0.2
(0.04)
104.13 19.2 0.31
Basophil Count (×10e9) 24 119.2 388 0 (0.03) 156.76 131.3 1.13 30 133.2 452 0 (0.03) 137.93 126.9 1.33

CVI = coefficient of variation for within-individual variability

CVG = coefficient of variation for between-individual variability. Mean values of the blinded duplicate

CV(c+m) = coefficient of variation for process and analytical variability

II is the Index of Individuality