Table 3c. Univariate Analysis for Predictors of Venous Thromboembolism in Cancer Patients with Indicated Lab Values, Adjusting for Cancer Site VTE Risk Score, Individual Cancer Sites and Cancer Stage (Table 3a).

Characteristic	OR	95% CI*		p-value*
Leukocyte count >11 × 109/L
Preserving case-control pair matching†	1.38	0.81	2.35	0.23
Not preserving case control pair matching‡	1.57	0.01	172.80	0.85
Hemoglobin <100g/L
Preserving case-control pair matching†	0.94	0.43	2.07	0.88
Not preserving case control pair matching‡	1.32	0.50	3.51	0.57
Platelet count ≥350 × 109/L
Preserving case-control pair matching†	1.61	0.78	3.29	0.20
Not preserving case control pair matching‡	1.45	0.00	1239.26	0.91

^*95% Confidence intervals are calculated using the robust sandwich estimate of Lin and Wei [54] for the covariance and standard error. P-values are Wald p-values from the conditional logistic model using the robust sandwich estimate. Covariates that reached the statistical significance level p≤0.1 are included in this table.

^†Subset of matched cases and controls where data were available in the electronic medical records, preserving the case-control pair status; N=344 sets.

^‡Subset of cases and controls where data were available in the electronic medical records, not preserving the case-control pairing; N=512 individuals.