Table 1. Univariate and multivariate repeated measures ANOVA for PCS and MCS scores.

Treatment comparison	PCS least square mean estimate								MCS least square mean estimate
	Univariate				Multivariate^				Univariate				Multivariate^
	Baseline	Follow-up	P*		Baseline	Follow-up	P*		Baseline	Follow-up	P*		Baseline	Follow-up	P*
SBRT vs. surgery			0.6945				0.7629				0.5898				0.4714
SBRT	32.93	27.33			36.01	31.01			43.82	41.96			39.85	38.44
Surgery	39.55	34.74			37.38	33.01			52.25	49.29			45.87	42.93
SLR vs. lobectomy			0.7954				0.6982				0.999				0.9505
SLR	38.41	33.26			41.48	36.85			50.20	47.09			47.58	44.17
Lobectomy	39.84	35.22			42.64	38.82			52.80	49.69			48.04	44.76
SLR vs. SBRT			0.8735				0.8977				0.6687				0.8126
SLR	38.41	33.26			38.93	33.87			50.20	47.09			44.75	42.37
SBRT	32.93	27.33			36.74	32.06			43.82	41.96			41.30	39.69

*, P value for the interaction between treatment group and time; ^, adjusted for age at diagnosis, gender, race, education, smoking status, completion of survey by proxy, and presence of relevant comorbidities. PCS, Physical Component Score; MCS, Mental Component Score; SBRT, stereotactic body radiation therapy; SLR, sublobar resection.