Table 3. Multivariate logistic regression analysis of factors associated with survival of 7 days or less.

Variable	OR (95% CI)	p-value
lnHFP<2	3.80 (1.49–11.12)	0.008
ECOG PS –3 or 4 vs. 1 or 2	3.42 (1.27–10.95)	0.023

OR: odds ratio, 95% CI: 95% confidence interval, lnHFP: natural logarithm-transformed high frequency power, ECOG PS: Eastern Cooperative Oncology Group performance status.

Hosmer-Lemeshow test, p = 0.501.