Table 3.

High-resolution computed tomography (HRCT) features of elderly patients with pulmonary tuberculosis and those with non-tuberculosis CAP.

	Pulmonary TB (n = 133)	Non-TB CAP (n = 133)	p value	NPV	PPV
Emphysematous lesions	38 (29)	30 (23)	0.261	0.480	0.441
GGO	72 (54)	110 (83)	< 0.001	0.274	0.396
Airspace consolidation	109 (82)	105 (79)	0.536	0.538	0.509
Reticular shadow	8 (6)	16 (12)	0.087	0.483	0.333
Centrilobular nodule	93 (70)	37 (28)	< 0.001	0.706	0.715
Air bronchogram	80 (60)	21 (16)	< 0.001	0.679	0.792
Cavity	56 (42)	2 (2)	< 0.001	0.630	0.966
Bronchial wall thickening	31 (23)	58 (44)	< 0.001	0.424	0.348
Bronchiectasis	30 (23)	31 (23)	0.884	0.498	0.492
Pleural effusion	46 (35)	29 (22)	0.021	0.545	0.613
Enlargement of mediastinum and/or hilar lymph node	52 (39)	31 (23)	0.005	0.557	0.627
Distributions of GGO and/or consolidation
Number of lobe involvements	2 (1–4)	3 (2–5)	0.002
Bilateral lungs	64 (48)	96 (72)	< 0.001	0.349	0.400
Right lung	96 (72)	121 (91)	< 0.001	0.245	0.442
Left lung	83 (62)	113 (85)	< 0.001	0.286	0.423
Upper lobes	81 (61)	77 (58)	0.617	0.519	0.513
Middle lobes	80 (60)	93 (70)	0.095	0.430	0.462
Lower lobes	79 (59)	114 (86)	< 0.001	0.260	0.409

Data are presented as number (%).

CAP community-acquired pneumonia, TB tuberculosis, NPV negative predictive value, PPV positive predictive value, GGO ground-glass opacities.