From: Clinical parameters predicting pathologic complete response following neoadjuvant chemoradiotherapy for rectal cancer
Variable
Odds ratio
95% CI
P value
Serum CEA (ng/mL)
 >5
Reference
–
 ≤5
2.170
1.195–3.939
0.011
Time interval (weeks)
 ≤7
 >7
2.588
1.484–4.512
0.001