Table 4. Hematological toxicities in the propensity-matched cohort.

	IMRT alone (N=241)	IMRT+CC (N=241)	P	Standardized difference
Leucopenia			<0.001
Grade 1–2	87 (36.1%)	152 (63.1%)		0.560
Grade 3–4	7 (2.9%)	21 (8.7%)		0.250
Neutropenia			<0.001
Grade 1–2	16 (6.6%)	92 (38.2%)		0.817
Grade 3–4	7 (2.9%)	12 (5.0%)		0.107
Anemia			< 0.001
Grade 1–2	54 (22.4%)	153 (63.5%)		0.912
Grade 3–4	3 (1.2%)	4 (1.7%)		0.035
Thrombocytopenia			<0.001
Grade 1–2	6 (2.5%)	50 (20.7%)		0.594
Grade 3–4	5 (2.1%)	4 (1.7%)		0.031

Abbreviations: CC = concurrent chemotherapy, IMRT = intensity-modulated radiotherapy