Table 1. Sociodemographic, clinical and radiological variables in smear negative patients with and without pulmonary tuberculosis. Lima, Peru, 2005–2008.
| Total | PTB | No PTB | OR | P value | |
| (n = 663) | (n = 184) | (n = 479) | |||
| Male Sex | 370(55.8) | 109(59.2) | 261(54.57) | 1.21 (0.86–1.71) | 0.27 |
| Age (s.d) | 41.4 (17.2) | 36.3 (15.8) | 43.3 (17.3) | 0.97 (0.96–0.98) | <0.01 |
| Fever | 43(6.5%) | 23(12.5) | 20(4.2) | 3.64 (1.51–8.80) | <0.01 |
| Hemoptysis | 205(30.9) | 77(41.9) | 128(26.7) | 1.97 (1.38–2.82) | <0.01 |
| Productive cough | 443(66.8) | 109(59.2) | 334(69.7) | 0.63 (0.44–0.90) | <0.01 |
| Weight loss | 417 (62.90) | 132(71.7) | 285(59.5) | 1.73 (1.19–2.50) | <0.01 |
| Previous history of TB | 239(36.1) | 45(24.5) | 194(40.5) | 0.48 (0.32–0.70) | <0.01 |
| TB contact | 314(47.36) | 92(50) | 222(46.4) | 1.16 (0.82–1.63) | 0.40 |
| HIV infection† | 98(24.0) | 24(19.5) | 74(26.0) | 0.69 (0.41–1.16) | 0.16 |
| Alcoholism | 41 (6.18%) | 11(6.0) | 30(6.3) | 0.95 (0.47–1.94) | 0.89 |
| Abnormal CXR | 538(81.2) | 167(90.8) | 371(77.5) | 2.86 (1.66–4.92) | <0.01 |
| Miliary infiltrate | 5(0.8) | 3(1.6) | 2(0.4) | 3.95 (0.66–23.85) | 0.13* |
| Apical infiltrate | 379(57.2) | 133(72.3) | 246(51.4) | 2.47 (1.71–3.57) | <0.01 |
Values in parenthesis are percentages unless otherwise indicated.
†Results available for 408 patients who accepted voluntary counselling and testing.
*Based on Fisher exact test.
PTB = Pulmonary tuberculosis.