Table 2. Pulmonary function tests performed between 2000 and 2012^#

Lung function	Date of test
	Feb 1, 2000	May 29, 2006	Oct 31, 2011	April 21, 2012	Sept 15, 2012	Oct 27, 2012
VC % predicted	100	101	80	88	88	88
FVC % predicted	101	103	80	94	91	94
FEV₁ % predicted	95	98	72	93	91	92
FEV₁/VC % predicted	71	71	65	76	74	67
D_LCO % predicted	100	76	32	42		51.2

VC: vital capacity; FVC: forced vital capacity; FEV₁: forced expiratory volume in 1 s; D_LCO: diffusing capacity of the lung for carbon monoxide. ^#: the full dose of pirfenidone was started in November 2011.