Integrated analysis of clinical, bioelectrical and functional variables in newly diagnosed lung cancer adult patients: pilot study

Table 8 Eigenvalues and eigenvectors of the correlation matrix of 11 independent variables considering R/H² and Xc/H²

Eigenvalues	3.8485	1.8737	1.6729	1.0287	0.9047	0.7318	0.4143	0.2510	0.1822	0.0910	0.0011
Proportion	0.350	0.170	0.152	0.094	0.082	0.067	0.038	0.023	0.017	0.008	0.000
Accumulated	0.350	0.520	0.672	0.766	0.848	0.915	0.952	0.975	0.992	1.000	1.000
Eigenvectors
Variables	PC1	PC2	PC3	PC4	PC5	PC6	PC7	PC8	PC9	PC10	PC11
Age	0.071	0.036	0.527	0.022	0.695	−0.243	0.084	−0.160	0.342	−0.156	−0.004
Gender	0.405	−0.275	0.022	−0.050	0.090	−0.242	0.063	0.818	−0.106	−0.070	− 0.018
Weight	−0.357	− 0.441	0.241	− 0.139	−0.113	0.006	−0.181	0.059	0.047	−0.056	0.739
H	−0.456	0.006	0.078	−0.044	−0.096	0.296	−0.246	0.381	0.522	−0.207	−0.408
R/H²	0.427	−0.194	0.003	−0.035	−0.243	− 0.191	−0.415	− 0.171	0.518	0.461	−0.038
Xc/H²	0.261	−0.441	−0.378	0.236	−0.016	0.112	0.115	−0.249	0.240	−0.627	0.012
θ	−0.160	−0.352	− 0.392	0.127	0.566	0.337	0.025	0.057	0.001	0.493	−0.013
ECOG	0.357	0.057	0.235	−0.041	0.161	0.550	−0.589	−0.033	− 0.327	−0.174	0.008
TS	0.188	−0.017	−0.043	− 0.846	0.012	0.302	0.354	−0.067	0.159	0.003	0.017
HV	0.170	−0.122	0.475	0.394	−0.272	0.456	0.487	0.044	0.094	0.215	0.010
BMI	−0.166	−0.595	0.280	−0.173	− 0.090	−0.174	− 0.022	−0.232	− 0.362	0.026	− 0.534

H, R/H², Xc/H², θ, ECOG, TS, HV, and BMI were the height of patient, body electrical resistance divided by H², body electrical capacitive reactance divided by H², body phase angle, Eastern Cooperative Oncology Group, tumor stage, histological variety of the tumor, and body mass index, respectively. PCi (i = 1, …, 11) meant type of principal component

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