Imaging features and prognostic value of 18F-FDG PET/CT detection of soft-tissue metastasis from lung cancer: a retrospective study

Table 7 Prognostic significance of potential indicators of overall survival in the STM group

Variable	x²/Q^a	P-value	P-value (PH)^b
Age (years)	0.211	0.646	0.281
Sex (male vs. female)	0.116	0.733	0.085
First manifestation	0.165	0.685	0.099
Accompanied by other site metastasis	2.159	0.142	0.531
ADC	2.588	0.019	0.003
SCLC	2.854	0.009	0.043
SUVmax of lung cancer	2.456	0.117	0.542
SUVmax of STM^c	5.399	0.020	0.881
Number of STM	0.005	0.941	0.948
Bone metastasis	5.538	0.019	0.169
Hepatic metastasis	0.005	0.946	0.719
Brain metastasis	8.920	0.003	0.638
Adrenal gland metastasis	8.945	0.003	0.465
Metastasis within the chest cavity	0.153	0.696	0.963
Other distant metastasis	0.968	0.659	0.036

ADC Adenocarcinoma, SCLC Small cell lung cancer, STM Soft-tissue metastasis, SUVmax maximum standardized uptake value
^aStatistics for Log-Rank (satisfying the PH) or Renyi test (not satisfying the PH)
^bTest for assumption of proportional hazards (PH)
^cCoding rules for SUVmax of STM: 1 = less than 5.8; 0 = great than or equal to 5.8
Statistically significant P-values are highlighted in bold

ISSN: 1471-2407