Table 4. Development of new prediction equations for DLco and DLco/VA.

		Dlco					DLco/VA
		Estimate	SE	t-value	p-value	r2	Estimate	SE	t-value	p-value	r2
Male	Intercept	−10.9092	15.107	−0.72	0.475	0.499	5.74985	2.60388	2.21	0.033	0.326
	Age	−0.1424	0.034	−4.21	<0.001		−0.02316	0.00583	−3.97	<0.001
	Height	0.2460	0.085	2.9	0.006		−0.0036	0.01461	−0.25	0.807
	Weight	0.0111	0.048	0.23	0.816		0.00634	0.00821	0.77	0.444
	Intercept	−10.4433	14.797	−0.71	0.484	0.498	6.01507	2.56814	2.34	0.024	0.316
	Age	−0.1434	0.033	−4.33	<0.001		−0.02374	0.00575	−4.13	<0.001
	Height	0.2482	0.083	2.98	0.005		−0.00233	0.01444	−0.16	0.873
Female	Intercept	−11.6196	9.723	−1.2	0.235	0.257	7.99271	1.85793	4.3	<0.001	0.217
	Age	−0.0709	0.028	−2.56	0.012		−0.02632	0.00529	−4.97	<0.001
	Height	0.1876	0.060	3.13	0.002		−0.02008	0.01147	−1.75	0.083
	Weight	0.0650	0.038	1.72	0.089		0.01522	0.00722	2.11	0.038
	Intercept	−12.8895	9.797	−1.32	0.192	0.233	7.69516	1.88687	4.08	<0.001	0.178
	Age	−0.0532	0.026	−2.05	0.043		−0.02219	0.00501	−4.43	<0.001
	Height	0.2145	0.059	3.66	<0.001		−0.01377	0.01127	−1.22	0.230

DLco: diffusing capacity of lung for carbon monoxide; VA: alveolar volume.