Table 3. Disease-Free Survival according to Body Mass Index Status and Tumor SUVbw in Stage I NSCLC Patients (n = 1,197).

	Univariable HR (95% CI)	P	Multivariable HR* (95% CI)	P
Normal weight
Low tumor SUVbw ≤ 5 (n = 304)	1.00 (referent)		1.00 (referent)
High tumor SUVbw > 5 (n = 196)	5.93 (3.50–10.01)	< 0.001	4.72 (2.77–8.06)	< 0.001
Overweight/obesity
Low tumor SUVbw ≤ 5 (n = 433)	1.00 (referent)		1.00 (referent)
High tumor SUVbw > 5 (n = 264)	3.61 (2.23–5.83)	< 0.001	2.61 (1.58–4.31)	< 0.001
P for interaction		0.002		< 0.001

*The multivariable Cox regression model stratified by body mass index status included lymphovascular invasion, visceral pleural invasion, and tumor SUV variables.

NSCLC, non-small cell lung cancer; SUVbw, maximum standardized uptake value normalized to body weight; HR, hazard ratio; CI, confidence interval