Table 3.
The linear regression formulae and coefficient correlation of R 2 (free carnitine and acylcarnitines)
| 1year (n = 198) |
2 years (n = 198) |
4 years (n = 78) |
||||
|---|---|---|---|---|---|---|
| 1month | 3months | 6months | 1year | |||
|
C0 |
R 2 = 0.86 y = 1.07x + 1.43 |
R 2 = 0.82 y = 1.15x + 3.10 |
R 2 = 0.75 y = 1.22x + 5.68 |
R 2 = 0.76 y = 1.35x + 6.56 |
R 2 = 0.71 y = 1.49x + 7.29 |
R 2 = 0.80 y = 2.29x + 5.44 |
|
C2 |
R 2 = 0.85 y = 0.85x + 0.23 |
R 2 = 0.79 y = 0.72x + 0.13 |
R 2 = 0.63 y = 0.51x + 0.63 |
R 2 = 0.56 y = 0.29x − 0.13 |
R 2 = 0.40 y = 0.15x − 0.27 |
R 2 = 0.06 y = 0.009x + 0.05 |
|
C3 |
R 2 = 0.89 y = 0.92x + 0.05 |
R 2 = 0.88 y = 0.89x + 0.03 |
R 2 = 0.80 y = 0.75x + 0.07 |
R 2 = 0.79 y = 0.56x − 0.01 |
R 2 = 0.66 y = 0.34x + 0.00 |
R 2 = 0.08 y = 0.06x + 0.06 |
|
C5 |
R 2 = 0.85 y = 1.02x + 0.01 |
R 2 = 0.83 y = 1.04x + 0.02 |
R 2 = 0.72 y = 1.09x + 0.02 |
R 2 = 0.77 y = 0.92x + 0.02 |
R 2 = 0.78 y = 1.02x + 0.00 |
R 2 = 0.45 y = 0.68x + 0.01 |
|
C5:1 |
R 2 = 0.01 y = 0.1x + 0.01 |
R 2 = 0.00 y = 0.01x + 0.01 |
R 2 = 0.00 y = 0.02x + 0.01 |
R 2 = 0.01 y = 0.09x + 0.01 |
R 2 = 5E‐05 y = −0.008x + 0.01 |
R 2 = 0.01 y = 0.13x + 0.01 |
|
C5OH |
R 2 = 0.79 y = 0.87x + 0.03 |
R 2 = 0.80 y = 0.84x + 0.03 |
R 2 = 0.60 y = 0.47x + 0.04 |
R 2 = 0.58 y = 0.48x + 0.04 |
R 2 = 0.42 y = 0.41x + 0.03 |
R 2 = 0.53 y = 0.40x + 0.03 |
|
C5DC |
R 2 = 0.47 y = 0.71 x + 0.03 |
R 2 = 0.44 y = 0.75 x + 0.04 |
R 2 = 0.19 y = 0.46 x + 0.05 |
R 2 = 0.20 y = 0.42 x + 0.03 |
R 2 = 0.13 y = 0.35 x + 0.02 |
R 2 = 9E‐05 y = 0.003 x + 0.03 |
|
C8 |
R 2 = 0.44 y = 0.76x + 0.02 |
R 2 = 0.53 y = 0.83x + 0.01 |
R 2 = 0.49 y = 0.72x + 0.02 |
R 2 = 0.30 y = 0.67x + 0.04 |
R 2 = 0.23 y = 0.63x + 0.04 |
R 2 = 0.38 y = 0.55x + 0.03 |
|
C10 |
R 2 = 0.73 y = 0.98x + 0.00 |
R 2 = 0.70 y = 0.99x + 0.01 |
R 2 = 0.68 y = 0.94x + 0.01 |
R 2 = 0.64 y = 0.88x + 0.01 |
R² = 0.59 y = 0.86x + 0.02 |
R 2 = 0.67 y = 0.72x + 0.001 |
|
C12 |
R 2 = 0.46 y = 0.73x + 0.03 |
R 2 = 0.52 y = 0.78x + 0.03 |
R 2 = 0.50 y = 0.74x + 0.03 |
R 2 = 0.48 y = 0.62x + 0.03 |
R 2 = 0.41 y = 0.62x + 0.03 |
R 2 = 0.77 y = 0.80x + 0.01 |
|
C14 |
R 2 = 0.81 y = 0.92x + 0.03 |
R 2 = 0.84 y = 1.03x + 0.03 |
R 2 = 0.60 y = 0.77x + 0.07 |
R 2 = 0.73 y = 0.75x + 0.05 |
R 2 = 0.70 y = 0.9x + 0.04 |
R 2 = 0.69 y = 1.01x + 0.02 |
|
C14:1 |
R 2 = 0.55 y = 0.86x + 0.02 |
R 2 = 0.54 y = 0.80x + 0.02 |
R 2 = 0.43 y = 0.83x + 0.05 |
R 2 = 0.25 y = 0.74x + 0.05 |
R 2 = 0.37 y = 0.93x + 0.06 |
R 2 = 0.55 y = 0.68x + 0.03 |
|
C16 |
R 2 = 0.85 y = 1.01x + 0.10 |
R 2 = 0.87 y = 1.07x + 0.17 |
R 2 = 0.81 y = 1.06x + 0.17 |
R 2 = 0.83 y = 0.97x + 0.20 |
R 2 = 0.81 y = 0.94x + 0.14 |
R 2 = 0.70 y = 0.91x + 0.37 |
|
C16OH |
R 2 = 0.31 y = 0.64x + 0.01 |
R 2 = 0.18 y = 0.56x + 0.01 |
R 2 = 0.20 y = 0.60x + 0.01 |
R 2 = 0.19 y = 0.54x + 0.01 |
R 2 = 0.15 y = 0.43x + 0.00 |
R 2 = 0.47 y = 0.98x + 0.005 |
|
C18 |
R 2 = 0.83 y = 0.98x + 0.03 |
R 2 = 0.83 y = 1.00x + 0.06 |
R 2 = 0.82 y = 1.02x + 0.03 |
R 2 = 0.83 y = 0.91x + 0.06 |
R 2 = 0.77 y = 0.79x + 0.07 |
R 2 = 0.63 y = 0.86x + 0.16 |
|
C18:1 |
R 2 = 0.75 y = 0.90x + 0.12 |
R 2 = 0.73 y = 0.88x + 0.20 |
R 2 = 0.75 y = 1.03x + 0.10 |
R 2 = 0.76 y = 1.05 x + 0.14 |
R 2 = 0.67 y = 0.85x + 0.17 |
R 2 = 0.62 y = 0.70x + 0.22 |
|
C18:1OH |
R 2 = 0.24 y = 0.48x + 0.01 |
R 2 = 0.20 y = 0.44x + 0.01 |
R 2 = 0.21 y = 0.34x + 0.01 |
R 2 = 0.17 y = 0.36x + 0.01 |
R 2 = 0.09 y = 0.24x + 0.01 |
R 2 = 0.23 y = 0.85x + 0.01 |
|
C3/C2 |
R 2 = 0.97 y = 1.08x + 0.00 |
R 2 = 0.95 y = 1.22x + 0.00 |
R 2 = 0.92 y = 1.44x + 0.00 |
R 2 = 0.86 y = 2.04x − 0.01 |
R 2 = 0.69 y = 2.88x − 0.00 |
R 2 = 0.26 y = 7.48x + 0.19 |
|
C0/(C16+C18) |
R 2 = 0.94 y = 1.05x + 0.32 |
R 2 = 0.92 y = 1.04x + 0.86 |
R 2 = 0.91 y = 1.19 x + 1.21 |
R 2 = 0.90 y = 1.34 x + 2.12 |
R 2 = 0.89 y = 1.54x + 2.71 |
R 2 = 0.78 y = 1.51 x + 5.44 |
|
(C16+C18:1)/C2 |
R 2 = 0.93 y = 1.17x + 0.01 |
R 2 = 0.87 y = 1.50x + 0.01 |
R 2 = 0.72 y = 2.07x + 0.1 |
R 2 = 0.47 y = 3.99x + 0.03 |
R 2 = 0.25 y = 9.35 x − 0.11 |
R 2 = 0.01 y = 78.04x + 14.75 |
|
C14:1/C2 |
R 2 = 0.59 y = 0.97x + 0.00 |
R 2 = 0.55 y = 1.22x + 0.00 |
R 2 = 0.36 y = 2.00x + 0.00 |
R 2 = 0.17 y = 4.18x + 0.01 |
R 2 = 0.19 y = 13.76x + 0.02 |
R 2 = 0.07 y = 196.72x − 0.01 |
|
C8/C10 |
R 2 = 0.11 y = 0.39x + 0.72 |
R 2 = 0.11 y = 0.33x + 0.75 |
R 2 = 0.15 y = 0.35x + 0.62 |
R 2 = 0.06 y = 0.45 + 0.88 |
R 2 = 0.05 y = 0.48 x + 0.78 |
R 2 = 0.04 y = 0.53 x + 0.73 |
| C14/C3 |
R 2 = 0.92 y = 1.14x + 0.00 |
R 2 = 0.90 y = 1.26x + 0.01 |
R 2 = 0.87 y = 1.39x + 0.01 |
R 2 = 0.80 y = 1.88x + 0.00 |
R 2 = 0.62 y =3.48 − 0.00 |
R 2 = 0.01 y = −33.00x + 8.41 |
The shaded columns indicate the items maintaining a linear correlation with R² ≥ 0.5.