Table 9.

Overview of significant interactions of markers of oxidative stress that differ between groups and clinical parameters. Properties of the respective model with corrected coefficient of determination (R2), number of cases (n), and significance (p) are shown in the first line. Furthermore, the determined standardized coefficient (β) and significance (p) are given for each influencing factor included in the model, where a significant interaction was found. Others are marked with n.s. for nonsignificant.

	SHp Corr. R2 = 0.60, n = 36, p < 0.001	lg 3-NT Corr. R2 = 0.57, n = 38, p < 0.001	lg 15-F2t-IsoP Corr. R2 = 0.22, n = 26, p = 0.023
Age	β = −0.45, p = 0.002	β = 0.40, p = 0.002	β = 0.46, p = 0.017
Gender	n.s.	n.s.	n.s.
BMI	n.s.	n.s.	n.s.
Diabetes	n.s.	n.s.	n.s.
Sleep apnea	β = −0.29, p = 0.015	β = 0.49, p < 0.001	n.s.
Mean systole	n.s.	n.s.	n.s.
Renin	n.s.	n.s.	n.s.
eGFR	β = 0.29, p = 0.029	β = −0.33, p = 0.007	n.s.
Serum protein	β = 0.34, p = 0.007	n.s.	n.s.
Cholesterol	n.s.	n.s.	n.s.
NT-proBNP	n.s.	n.s.	n.s.

3-NT = 3-nitrotyrosin, 15-F2t-IsoP = 15-F2t-isoprostane, BMI = body mass index, eGFR = estimated glomerular filtration rate, SHp = free thiol groups in proteins.