A New Scale to Assess the Severity and Prognosis of Pulmonary Alveolar Proteinosis

Table 2

Comparison of PaO₂ values between different groups according to DLCO, % predicted.

DLCO, % predicted		%	PaO2, mmHg
≥80	37	36.6	86.3 ± 18.0
60–80	32	31.7	76.2 ± 14.5
<60	32	31.7	64.0 ± 12.6
P value
≥80 versus 60–80			0.013
60–80 versus <60			0.001
≥80 versus <60			<0.001

Data are presented as (%) or mean ± SD unless otherwise stated. DLCO: single-breath diffusing capacity of carbon monoxide; PaO₂: arterial partial pressure of oxygen.