Table 3. Comparative mean analysis of serum of GSH, GSSG, TOS, TAC and OSI of BT patients and control group in referral hospitals, Addis Ababa, Ethiopia, 2020.

Serum parameters	Control group(N = 50)	BT patients (N = 50)	p value	95% CI
GSH	20.04 ± 2.6	11.09 ± 1.26	0.001	−9.77, −8.15
GSSG	0.21 ± 0.07	0.72 ± 0.03	0.001	0.48, 0.52
TOS	6.59 ± 0.81	9.66 ± 1.76	0.001	2.52, 3.61
TAC	118.68 ± 10.19	79.65 ± 17.91	0.017	−44.81, −33.25
OSI (ratio of TOS/TAC*100)	5.61 ± 0.92	13.37± 5.89	0.006	6.08, 9.44

Measuring units of GSH and GSSG are in μM/μg, TOS is in μmol H₂O₂ Eq/L, TAC is in mmol Trolox Eq/L and OSI is in arbitrary units.