Table 3.

Distribution of the disease in the two groups.

	Distribution			Predominant distribution
	Focal	Multifocal	Diffuse	Upper lung zone	Middle lung zone	Lower lung zone
Group 1 (n = 30)	1	10	19	8	29	30
Group 2 (n = 76)	9	52	15	40	56	72
Total (n = 106)	10	62	34	48	85	102

p < 0.001.