Assessment of thyroid gland hormones and ultrasonographic abnormalities in medical staff occupationally exposed to ionizing radiation

Table 3 Comparison between the studied groups according to oxidative stress markers

	Participants exposed to radioiodine (Group I) (n = 40)	Participants exposed to X-ray (Group II) (n = 40)	Control group (Group III) (n = 40)	p*	p**
MDA (nmol/ml)
Min. – Max.	0.13–21.84	1.52–11.10	0.26–2.50	0.006*	< 0.001*
Mean ± SD.	5.76 ± 7.09	4.04 ± 2.32	1.14 ± 0.67	0.006*	< 0.001*
H₂O₂ (mM/L)
Min. – Max.	1.01–2.42	1.20–2.34	0.16–0.93	< 0.001*	< 0.001*
Mean ± SD.	1.36 ± 0.40	1.25 ± 0.39	0.48 ± 0.23	< 0.001*	< 0.001*
TAC (mM/L)
Min. – Max.	0.08–1.74	0.19–0.94	1.08–2.71	< 0.001*	< 0.001*
Mean ± SD.	0.74 ± 0.56	0.56 ± 0.23	1.59 ± 0.51	< 0.001*	< 0.001*

p*, p-value for comparing between group I and group III. p**, p-value for comparing between group II and group III. *: Statistically significant at p ≤ 0.05. Student t test and Mann Whitney test were used

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