Table 3.

Cross-tabulation between fine crackles or X-ray and presence or absence of interstitial lung disease in high-resolution computed tomography.

	ILD in HRCT
	Yes	No	Total	P value
With fine crackles	51	14	65	<.001
Without fine crackles	16	39	55
Total	67	53	120
With ILD in X-ray	42	0	42	<.001
Without ILD in X-ray	25	53	78
Total	67	53	120