Table 4.

Association between qualitative nailfold videocapillaroscopy and pulmonary function tests

	Cutolo’s pattern
	Normal (n = 15)	Early (n = 23)	Active (n = 59)	Late (n = 37)	p value
FVC, % predicted	89.1 (± 20.3)	82.3 (± 17.2)	85.3 (± 18.3)	69.6 (± 20.7)*,**	0.001
DLCO, % predicted	77.3 (± 20.8)	71.4 (± 27.5)	68.6 (± 20.4)	54.2 (± 23.3)*,†,‡	0.002

Data presented as mean (± standard deviation) for continuous variables

FVC forced vital capacity, DLCO diffusion capacity of the lung for carbon monoxide

*p < 0.01, late versus normal

**p = 0.001, late versus active

^†p < 0.05, late versus early

^‡p < 0.05, late versus active