Evaluation of effect of body mass index and weight loss on survival of patients with nasopharyngeal carcinoma treated with intensity-modulated radiation therapy

Table 2 Univariate analyses of risk factors for 3-year LRFS, DMFS, DSS, and OS rates

Variable	LRFS (%)	p	DMFS (%)	p	DSS (%)	p	OS (%)	p
Age (y)		0.165		0.911		0.198		0.042
<50	91.9		88.0		92.0		88.8
≥50	88.6		87.3		84.9		87.0
Sex		0.980		0.032		0.078		0.880
Male	90.8		91.3		90.4		84.5
Female	88.6		79.4		83.5		81.8
preT BMI		0.466		0.052		0.213		0.667
<23 kg/m²	86.9		81.1		86.5		86.7
≥23 kg/m²	91.9		93.8		89.2		82.0
Education level		0.580		0.530		0.130		0.092
Low	92.6		86.1		84.5		78.2
Medium	88.1		87.1		86.7		82.8
High	87.4		91.8		98.0		96.2
Smoke		0.463		0.257		0.318		0.828
No	90.9		86.4		86.6		83.1
Yes	88.4		90.5		91.9		84.9
CCIS		0.022		0.638		0.663		0.025
0	93.9		86.7		89.5		85.4
1	69.9		92.9		84.7		82.0
≥2	88.8		89.3		83.8		71.9
T stage		0.317		0.928		0.474		0.194
T1/T2	92.2		86.9		89.8		85.7
T3/T4	87.9		88.7		86.5		81.5
N stage		0.657		0.138		0.024		0.134
N0/N1	92.4		92.8		96.6		89.7
N2/N3	89.3		85.8		85.3		81.4
Treatment		0.488		0.013		0.094		0.471
RT alone	93.8		86.9		92.3.		89.9
CCRT alone	91.8		94.9		93.0		83.5
RT/CCRT + CT	85.4		84.2		81.7		80.6
BWL during RT		0.111		0.097		0.256		0.113
≥5 %	100.0		92.7		90.2		86.1
<5 %	88.2		84.7		90.7		82.1
Hemoglobin		0.652		0.225		0.364		0.206
≥13.5	91.5		90.1		89.0		85.7
<13.5	88.3		83.0		87.4		79.2

Abbreviations: LRFS locoregional-free survival; DMFS distant metastasis-free survival; DSS disease-specific survival; OS overall survival. Other abbreviations as in Table 1

ISSN: 1748-717X