Table 2.

Pulmonary function test of pre- and post-SBRT

	Pre-SBRT	Post-SBRT	Δ	P value
FVC (L)	2.1 (0.4–3.7)	2.1 (1.6–2.7)	−0.1 (−1.1–1.2)	0.92
VC (L)	2.3 (1.1–2.9)	2.2 (1.3–2.7)	−0.1 (−0.3–0.5)	0.22
%VC (%)	83 (49–106)	80 (63–104)	−3.1 (−25–22)	0.32
FEV1 (L)	1.3 (0.4–2.1)	1.3 (0.6–2.0)	−0.1 (−0.8–0.8)	0.56
%FEV1 (%)	74 (24–119)	73 (26–115)	−1.2 (−55–55)	0.87

All data given as mean (range) without P value. SBRT = stereotactic body radiotherapy, Δ = post-treatment value minus pre-treatment value, FVC = forced vital capacity, VC = vital capacity, %VC = percent predicted vital capacity, FEV1 = forced expiratory volume in one second, %FEV1 = percent predicted forced expiratory volume in one second. P value < 0.05 is considered statistically significant.