TB patients VS. Healthy volunteers | Bacteriologically positive TB patients VS. Healthy volunteers | Bacteriologically negative TB patients VS. Healthy volunteers | Extrapulmonary TB patients VS. Healthy volunteers | |
---|---|---|---|---|
Sensitivity | ||||
Induration | 84.25% | 86.55% | 80.50% | 86.57% |
Erythema | 90.85%a | 93.65%a | 86.52%a | 92.54% |
Induration or Erythema | 91.25%a | 94.16%a | 86.88%a | 92.54% |
Induration + Erythema | 83.85% | 86.29% | 80.14% | 86.57% |
χ2 | 33.50 | 24.98 | 8.37 | 2.55 |
P | <0.01 | <0.01 | 0.04 | 0.47 |
Specificity | ||||
Induration | 91.15% | 91.15% | 91.15% | 91.15% |
Erythema | 89.83% | 89.83% | 89.83% | 89.83% |
Induration or Erythema | 89.63% | 89.63% | 89.63% | 89.63% |
Induration + Erythema | 91.35% | 91.35% | 91.35% | 91.35% |
χ2 | 4.13 | 4.13 | 4.13 | 4.13 |
P | 0.25 | 0.25 | 0.25 | 0.25 |
Consistency | ||||
Induration | 88.88% | 90.20% | 89.48% | 90.96% |
Erythema | 90.16% | 90.62% | 89.31% | 89.94% |
Induration or Erythema | 90.16% | 90.57% | 89.20% | 89.75% |
Induration + Erythema | 88.88% | 90.30% | 89.59% | 91.14% |
χ2 | 3.97 | 0.27 | 0.17 | 2.71 |
P | 0.26 | 0.97 | 0.98 | 0.44 |