Table 2. Type and severity of pulmonary impairment in patients previously treated for pulmonary tuberculosis.a .
| Variable | (n = 214) |
|---|---|
| Type of impairment | |
| Normal | 112 (52.4) |
| Obstructive pattern (FEV1/VC ratio < LLN and TLC ≥ LLN) | 74 (34.6) |
| Restrictive pattern (TLC < LLN and FEV1/VC ratio ≥ LLN) | 18 (8.4) |
| Mixed pattern (TLC and FEV1/VC ratio < LLN) | 8 (3.7) |
| Nonspecific pattern (TLC ≥ LLN, FEV1/VC ratio ≥ LLN, and FEV1 or FVC < LLN) | 2 (0.9) |
| Reduced pulmonary function (FEV1 < LLN) | 60 (28) |
| FEV1 | |
| < 35% of predicted | 9 (4.2) |
| 35-49% of predicted | 11 (5.1) |
| 50-59% of predicted | 15 (7.0) |
| 60-69% of predicted | 19 (8.9) |
| ≥ 70% of predicted and < LLN | 6 (2.8) |
| ≥ LLN | 154 (72) |
LLN: lower limit of normal. aValues expressed as n (%).