Table 3.

The association C3 expression with HRCT findings

HRCT: Lobe-Specific Honeycombing Score	High C3	Low C3	P Value
0: Normal/none	10	19
1: Mild (1–25%)	4	7
2: Moderate (26–50%)	2	3
3: Marked (51–75%)	1	1
4: Severe (>75%)	1	0	Fisher’s exact test (0 vs. 1–4), P = 0.762

The comparison of high-resolution computed topography scan (HRCT) between cases in upper and lower quartile of complement component 3 (C3) expression (High C3 and Low C3, respectively). Extent of honeycombing in the lobe that mRNA was extracted from were determined by HRCT as previously described (36).