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. 2020 Nov 20;160:40–46. doi: 10.1016/j.freeradbiomed.2020.07.034

Fig. 3.

Fig. 3

Observed points and modelled curves (one per participant) for urinary 8-oxodG and 8-oxoGuo levels following 0.8 MED of UVR. Urinary 8-oxodG and 8-oxoGuo levels were measured in every urine void for five days post-UVR. (a) A statistically significant (P = 0.01) increase and decrease in 8-oxodG occurred overall, with dark skin types at much lower values throughout. The apparent difference in curvature between skin type groups was not statistically significant (P = 0.11). (b) A statistically significant (P = 0.001) change in 8-oxoGuo levels occurred overall with lower values and a significant difference (P = 0.006) in curvature in the dark skin group. Two data-points (8-oxodG values = 24.13 and 31.38) from a skin phototype V subject were clearly erroneous and were excluded from analyses.