Table 1

Mean observed (in litres) and percentage predicted values of forced vital capacity (FVC) according to the number of episodes of tuberculosis

Age (years)		Pulmonary tuberculosis
		No tuberculosis				1 episode				2 episodes				3 episodes
		n	Observed			% pred	n			Observed	% pred			n	Observed	% pred	n	Observed	% pred
20–24	339	4.32	98.5		1	4.77	109.2
25–29	2248	4.29	99.7		38	4.10	95.5		2	3.68	85.5
30–34	5416	4.22	100.1		200	4.06	96.5		13	3.99	94.7		2	3.89	92.5
35–39	5466	4.11	100.1		355	4.01	98.0		38	3.74	91.5		5	2.89	70.5
40–44	4100	3.99	100.4		417	3.86	97.5		75	3.71	93.6		17	3.47	87.6
45–49	2906	3.84	100.7		444	3.72	97.6		104	3.49	91.8		36	3.38	88.8
50–54	1870	3.68	101.1		367	3.54	97.1		64	3.39	93.2		18	3.23	88.6
55–60	1059	3.51	101.3		246	3.40	98.2		58	3.12	89.3		14	3.17	91.4
60>	308	3.34	102.0		69	3.17	96.3		12	3.08	93.8		4	3.27	100.5
Total	23712				2137				366				96