Changes in cardiac volume determined with repeated enhanced 4DCT during chemoradiotherapy for esophageal cancer

Radiation Oncology

Table 1 Baseline characteristics and potential explanatory variables for cardiac volume reduction

Features	Value	P-value
Number of patients	46
Age (years, Mean ± SD)	66.93 ± 9.76	0.281^a
Gender (n, %)		0.107^b
Female	14(30.43)
Male	32(69.57)
BMI (Mean ± SD)	22.63 ± 3.92	0.606^a
Smoker (n, %)		0.410^b
Yes	21(45.65)
No	25(54.35)
Hypertension (n, %)		0.309^b
Yes	6 (13.04)
No	40 (86.96)
Tumor location (n)
Upper	11
Middle	22
Lower	13
Stage		0.137^b
Stage II	13
Stage III	33
BP systolic at baseline (mmHg)	125.05 ± 15.98	0.881^a
BP diastolic at baseline (mmHg)	75.66 ± 8.17	0.167^a
HR at baseline (beats/min)	75.32 ± 6.23	0.412^a
△BP systolic (Mean ± SD)	17.36 ± 17.96	0.160^a
△BP diastolic (Mean ± SD)	4.32 ± 9.70	0.077^a
△HR (Mean ± SD)	4.64 ± 4.91	0.448^a

Abbreviations: BMI Body mass index, BP Blood pressure, HR Heart rate, P-value: the correlation between the potential explanatory variables and decline of heart volume. △BP systolic:systolic blood pressure at the twentieth – the initial systolic blood pressure. △BP diastolic: diastolic blood pressure at the twentieth – the initial diastolic blood pressure. △HR: heart rate at the twentieth – the initial heart rate
^aPearson’s correlation analysis
^b one-way ANOVA analysis
P ≥ 0.05 reflects that there was no correlation between the potential explanatory variables and heart volume change. Inversely,
P < 0.05 reflects that the potential explanatory variables were strongly linked to heart volume change

ISSN: 1748-717X