Table 2.

Descriptive measurements of the oxidative stress markers and the histopathological variables and staging of the colorectal cancer (mean±SD)

Variables	MDA (M) nmol/L	MDA (P) nmol/L	4-HNE (M) nmol/L	4-HNE (P) nmol/L
Tumor stage*
I	1.01±0.8	0.99±0.7	0.16±0.02	0.11±0.01
II	1.01±0.7	0.93±0.3	0.25±0.03	0.21±0.02
III	2.15±1.6	2.02±1.4	0.34±0.09	0.31±0.07
IV	3.99±1.9	3.28±1.8	0.41±0.03	0.38±0.02
p value	0.001	0.001	0.001	0.001
Diameter (cm)
≤3.9	2.34±0.3	2.18±0.2	0.28±0.03	0.25±0.02
4.0–7.9	2.11±0.2	1.99 ±0.2	0.25±0.02	0.21±0.01
≥8.0	2.17±0.2	2.15±0.2	0.25±0.02	0.22±0.01
p value	0.107	0.188	0.104	0.105
Cell differentiation (D)
WD	1.56±0.2	1.12±0.5	0.19±0.01	0.17±0.03
MD	3.67±1.4	3.28±1.1	0.31±0.02	0.28±0.02
PD	1.23±0.3	1.2±0.2	0.16±0.01	0.15±0.01
p value	0.814	0.631	0.243	0.198
Venous invasion
Present	3.65±1.4	3.08±1.5	0.49±0.1	0.45±0.12
Absent	1.42±0.8	1.23±0.5	0.26±0.11	0.21±0.11
p value	0.036	0.021	0.169	0.091
Lymph invasion
Present	3.71±0.3	3.12±0.7	0.45±0.02	0.41±0.03
Absent	1.67±0.4	1.24±0.4	0.26±0.03	0.21±0.02
p value	0.094	0.16	0.128	0.499

^*According to the TNM classification criteria