Table 4. Comparison between spirometry results and chest X-ray results of patients treated for pulmonary tuberculosis who had no history of lung disease or smoking (n = 177); 2014-2015.

Spirometry resultsb	Chest X-ray resultsa
	Normal		NTA-I		NTA-II		NTA-III
	(n = 68)		(n = 72)		(n = 31)		(n = 6)
	n	%	n	%	n	%	n	%
Normal spirometry	35	46.7	29	38.7	10	13.3	1	1.3
Obstructive lung disease	11	28.9	19	50.0	8	21.1	0	0.0
Restrictive lung disease	17	37.0	18	39.1	9	19.6	2	4.3
Obstructive lung disease with reduced FVC	5	27.8	6	33.3	4	22.2	3	16.7

^aAccording to the National Tuberculosis Association (NTA) classification system. ^{25 ) b}According to the recommendations of the Brazilian Thoracic Association guidelines. ^{16 )} Chi-square test; p = 0.01.