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

Table 3

Comparison of PaO₂ values between different groups according to HRCT score.

HRCT score		%	PaO2, mmHg
Total	101		76.0 ± 17.8
≤8	17	16.8	90.5 ± 9.2
8–16	32	31.7	81.2 ± 19.6
16–24	30	29.7	71.3 ± 13.1
24–32	22	21.8	63.0 ± 14.5
value
≤8 versus 8–16			0.029
≤8 versus 16–24			<0.001
≤8 versus 24–32			<0.001
8–16 versus 16–24			0.032
8–16 versus 24–32			0.001
16–24 versus 24–32			0.029

Data are presented as (%) or mean ± SD unless otherwise stated. HRCT: high resolution computed tomography; PaO₂: arterial partial pressure of oxygen.