TABLE 2.
Bivariate correlations between baseline and change in carotenoid status measures across groups1
| Timepoint | Carotenoid variable | Change (follow-up − baseline) |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Treatment group (n = 12) |
Control group (n = 9) |
||||||||
| Serum L, μmol/L | MPOD | Skin carotenoids | Dietary LZ, mg2 | Serum L, μmol/L3 | MPOD | Skin carotenoids | Dietary LZ, mg2 | ||
| Baseline | Dietary LZ2 | −0.91 (0.09) | 0.45 (0.44) | −0.21 (0.73) | −0.99 (0.08) | −0.64 (0.17) | −0.13 (0.78) | −0.20 (0.61) | −0.63 (0.26) |
| Serum L | −0.29 (0.38) | 0.87 (<0.01)4 | −0.15 (0.64) | −0.65 (0.55) | −0.50 (0.20) | 0.07 (0.87) | 0.30 (0.47) | −0.53 (0.35) | |
| Skin carotenoids | −0.12 (0.73) | 0.75 (<0.01)4 | −0.22 (0.49) | −0.97 (0.15) | −0.40 (0.33) | 0.38 (0.32) | −0.20 (0.61) | −0.86 (0.06) | |
| MPOD | 0.30 (0.37) | −0.19 (0.57) | 0.34 (0.29) | −0.83 (0.37) | 0.12 (0.77) | −0.40 (0.29) | −0.27 (0.48) | −0.68 (0.21) | |
L, lutein; LZ, lutein and zeaxanthin; MPOD, macular pigment optical density.
1
Data presented as Pearson r (P).
2
Treatment group n = 5, control group n = 7.
3
Control group n = 8.
4
Denotes significance at P < 0.05 (2 tailed).