Table 5. Mean values from the baseline and repeat assessment sample according to fourths of the biomarker distribution from the baseline sample, and their self-correlation for all assays 1.
| Baseline measures in
fourths |
Range of means
across baseline categories |
Correlation between
baseline and repeat measure |
||||
|---|---|---|---|---|---|---|
|
Alanine aminotransferase
[ALT] (U/L, n=16,610) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 12.8 | 17.9 | 23.4 | 39.5 | 26.7 | 0.46 |
| Repeat sample mean | 16.4 | 20.1 | 23.9 | 31.5 | 15.1 | |
|
Albumin [ALB] (g/L,
n=13,434) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 41.9 | 44.3 | 45.9 | 48.3 | 6.4 | 0.48 |
| Repeat sample mean | 44.0 | 45.3 | 46.1 | 47.2 | 3.2 | |
|
Alkaline phosphatase
[ALP] (U/L, n=16,616) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 57.2 | 73.2 | 86.3 | 112.3 | 55.2 | 0.72 |
| Repeat sample mean | 64.4 | 77.7 | 88.5 | 107.9 | 43.5 | |
|
Apolipoprotein A
[APOA] (g/L, n=13,290) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 1.2 | 1.4 | 1.6 | 1.9 | 0.7 | 0.77 |
| Repeat sample mean | 1.3 | 1.5 | 1.6 | 1.9 | 0.5 | |
|
Apolipoprotein B
[APOB] (g/L, n=16,485) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 0.7 | 0.9 | 1.1 | 1.3 | 0.6 | 0.66 |
| Repeat sample mean | 0.8 | 1.0 | 1.1 | 1.2 | 0.4 | |
|
Aspartate aminotransferase
[AST] (U/L, n=16,495) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 18.7 | 22.9 | 26.6 | 36.4 | 17.7 | 0.40 |
| Repeat sample mean | 21.8 | 24.7 | 27.4 | 32.5 | 10.7 | |
|
C-reactive protein
[CRP] (mg/L, n=16,551) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 0.4 | 0.9 | 1.7 | 6.3 | 6.0 | 0.29 |
| Repeat sample mean | 1.0 | 1.7 | 2.3 | 4.4 | 3.4 | |
|
Calcium [CA] (mmol/L,
n=13,431) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 2.3 | 2.3 | 2.4 | 2.5 | 0.2 | 0.42 |
| Repeat sample mean | 2.4 | 2.4 | 2.4 | 2.5 | 0.1 | |
|
Cholesterol
[CHOL] (mmol/L, n=16,623) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 4.3 | 5.3 | 6.0 | 7.1 | 2.9 | 0.66 |
| Repeat sample mean | 4.7 | 5.5 | 6.0 | 6.7 | 2.0 | |
|
Creatinine [CRE] (umol/L,
n=16,580) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 55.7 | 66.7 | 76.2 | 91.7 | 36.0 | 0.77 |
| Repeat sample mean | 59.9 | 69.7 | 78.8 | 91.7 | 31.8 | |
|
Cystatin C [CYS] (mg/L,
n=16,608) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 0.7 | 0.8 | 0.9 | 1.1 | 0.3 | 0.81 |
| Repeat sample mean | 0.8 | 0.9 | 0.9 | 1.1 | 0.3 | |
|
Direct bilirubin
[BILD] (umol/L, n=12,635) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 1.2 | 1.5 | 1.9 | 3.0 | 1.8 | 0.70 |
| Repeat sample mean | 1.4 | 1.6 | 1.8 | 2.6 | 1.2 | |
|
Gamma glutamyltransferase
[GGT] (U/L, n=16,604) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 14.9 | 21.9 | 31.6 | 72.6 | 57.8 | 0.67 |
| Repeat sample mean | 17.1 | 24.3 | 34.0 | 64.9 | 47.8 | |
|
Glucose [GLU] (mmol/L,
n=13,411) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 4.2 | 4.7 | 5.1 | 6.1 | 1.9 | 0.42 |
| Repeat sample mean | 4.8 | 4.9 | 5.0 | 5.5 | 0.7 | |
| HbA1c (mmol/mol, n=12,863) | 1 | 2 | 3 | 4 | ||
| Baseline sample mean | 30.5 | 34.0 | 36.3 | 42.2 | 11.7 | 0.76 |
| Repeat sample mean | 32.5 | 35.0 | 36.7 | 42.0 | 9.4 | |
|
HDL cholesterol
[HDLC] (mmol/L, n=13,430) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 1.0 | 1.3 | 1.5 | 2.0 | 0.9 | 0.85 |
| Repeat sample mean | 1.1 | 1.4 | 1.6 | 2.0 | 0.8 | |
|
Insulin-like growth factor-1
[IGF-1] (nmol/L, n=16,357) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 14.9 | 19.7 | 23.1 | 28.6 | 13.7 | 0.77 |
| Repeat sample mean | 15.7 | 19.5 | 22.2 | 26.3 | 10.6 | |
|
LDL direct
[LDLD] (mmol/L, n=16,538) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 2.5 | 3.2 | 3.8 | 4.7 | 2.2 | 0.65 |
| Repeat sample mean | 2.8 | 3.4 | 3.8 | 4.3 | 1.5 | |
|
Lipoprotein (a)
[LPA] (nmol/L, n=12,203) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 6.7 | 14.4 | 35.3 | 112.2 | 105.4 | 0.95 |
| Repeat sample mean | 8.2 | 16.6 | 37.3 | 116.6 | 108.4 | |
|
Oestradiol
[OES] (women only; pmol/L, n=659) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 227.0 | 345.9 | 517.8 | 1116.3 | 889.3 | 0.07 |
| Repeat sample mean | 518.7 | 526.7 | 612.2 | 666.5 | 147.8 | |
|
Phosphate
[PHOS] (mmol/L, n=13,378) |
1 | 2 | 3 | 4 | ||
| Mean in baseline sample | 1.0 | 1.1 | 1.2 | 1.4 | 0.4 | 0.45 |
| Repeat sample mean | 1.1 | 1.2 | 1.3 | 1.3 | 0.2 | |
|
Rheumatoid factor
[RF] (IU/mL, n=1,009) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 11.8 | 16.6 | 25.8 | 53.6 | 41.9 | 0.58 |
| Repeat sample mean | 17.8 | 20.0 | 27.6 | 45.9 | 28.1 | |
|
Sex hormone-binding
globulin [SHBG] (nmol/L, n=13,130) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 25.0 | 39.0 | 53.4 | 87.4 | 62.4 | 0.81 |
| Repeat sample mean | 30.3 | 43.6 | 57.5 | 83.5 | 53.2 | |
|
Testosterone
[TES] (men only; nmol/L, n=8,124) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 7.9 | 10.8 | 12.9 | 16.8 | 8.9 | 0.66 |
| Repeat sample mean | 9.3 | 11.3 | 12.8 | 15.5 | 6.2 | |
|
Total bilirubin
[TBIL] (umol/L, n=16,452) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 5.5 | 7.4 | 9.2 | 14.9 | 9.4 | 0.77 |
| Repeat sample mean | 6.4 | 7.5 | 8.7 | 13.2 | 6.8 | |
|
Total protein [TP] (g/L,
n=13,420) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 67.2 | 70.6 | 73.0 | 77.0 | 9.9 | 0.50 |
| Repeat sample mean | 70.6 | 72.6 | 74.0 | 75.9 | 5.3 | |
|
Triglycerides
[TRIG] (mmol/L, n=16,585) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 0.8 | 1.2 | 1.7 | 3.0 | 2.2 | 0.60 |
| Repeat sample mean | 1.1 | 1.4 | 1.8 | 2.5 | 1.4 | |
|
Urate [UA] (umol/L,
n=16,560) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 213.4 | 277.3 | 329.6 | 410.9 | 197.5 | 0.82 |
| Repeat sample mean | 231.9 | 288.8 | 336.2 | 399.6 | 167.7 | |
| Urea (mmol/L, n=16,587) | 1 | 2 | 3 | 4 | ||
| Baseline sample mean | 4.0 | 5.0 | 5.7 | 7.1 | 3.2 | 0.59 |
| Repeat sample mean | 4.7 | 5.3 | 5.8 | 6.6 | 1.9 | |
|
Vitamin D [VITD] (nmol/L,
n=15,437) |
1 | 2 | 3 | 4 | ||
| Baseline sample mean | 25.4 | 41.1 | 55.2 | 76.8 | 51.4 | 0.56 |
| Repeat sample mean | 34.0 | 42.3 | 50.4 | 64.3 | 30.3 | |
1 Includes biochemistry markers measured in serum and red blood cells (HbA1c).