Pre-treatment platelet counts as a prognostic and predictive factor in stage II and III rectal adenocarcinoma

Table 3 Logistic regression analysis of pathologic response (complete or good vs moderate or minimal or no response) as the outcome variable and platelet counts (≤vs > 300 × 10⁹/L), carcinoembryonic antigen (≤ 5 μg/L vs > 5 μg/L) and symptoms (obstruction or pain vs bleeding or asymptomatic) at presentation as the predictor variables

Variable	OR	95%CI	P value
Platelet count	0.15	0.02-0.85	0.03
CEA	0.04	0.004-0.41	0.006
Symptoms at presentation	4.7	0.39-55.8	0.20

CEA: Carcinoembryonic antigen.