Table II.

Comparison of the levels of advanced oxidation protein products (AOPPs) between serum samples and tonsil tissue samples in patients with chronic tonsillitis.

Serum AOPP (ng/mL) (mean ± SD) N = 30	Tonsil Tissue AOPP (ng/mg protein) (mean ± SD) N = 30	95% CI	P
13.1 ± 3.3	41.9 ± 13.5	-33.99 to -23.67	< 0.001*

AOPP: Advanced oxidation protein product, SD: Standard deviation, CI: Confidence interval. Data are presented as mean ± SD for each group. Data were tested using the unpaired t test. A P value of less than 0.05 was considered as statistically significant. Since the 95% CI did not include zero, there was a statistically significant difference between the two groups.