Table 2. TB-Ag ELISA assay.
| Characteristics | n=41 | Active TB | Active TB | Chi-square | Df | P-value | n=84 | Non-TB Control | Non-TB Control | Chi-square | Df | P-value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Positive | Negative | Positive | Negative | |||||||||
| n= 34 (83%) | n= 7 (17%) | n= 5 (6%) | n= 82 (94%) | |||||||||
| Age | ||||||||||||
| <18 | 1 | 1 (100) | 0 | 9 | 0 | 9 (100) | ||||||
| 18 to 40 | 32 | 26 (81) | 6 (19) | 53 | 3 (5) | 50 (95) | ||||||
| >40 | 8 | 7 (88) | 1 (12) | 30.059 | 2 | 0.0001 | 25 | 2 (8) | 23 (92) | 0.000 | 1 | 1.0000 |
| Gender | ||||||||||||
| Male | 21 | 16 (76) | 5 (24) | 50 | 3 (6) | 47 (94) | ||||||
| Female | 20 | 18 (90) | 2 (10) | 0.029 | 1 | 0.8638 | 37 | 2 (5) | 35 (95) | 0.000 | 1 | 1.0000 |
| BCG Vaccinated | ||||||||||||
| Yes | 12 | 12 (100) | 0 | 23 | 1 (4) | 22 (96) | ||||||
| No | 19 | 14 (74) | 5 (26) | 47 | 2 (4) | 45 (96) | ||||||
| Don’t Know | 10 | 8 (80) | 2 (20) | 1.647 | 2 | 0.4389 | 17 | 2 (12) | 15 (88) | 0.400 | 2 | 0.8187 |
| BMI | ||||||||||||
| Underweight (16-18.5) | 18 | 16 (89) | 2 (11) | 22 | 1 (4) | 21 (96) | ||||||
| Normal (18.5 to 25) | 19 | 14 (74) | 5 (26) | 60 | 3 (5) | 57 (95) | ||||||
| Overweight (> 25) | 4 | 4 (100) | 0 | 7.294 | 2 | 0.0261 | 5 | 1 (20) | 4 (80) | 1.600 | 2 | 0.4493 |
Depict the results of the M. tuberculosis Ag85 estimation in the serum of TB patients and non-TB control individuals in Melghat region. Note: n = no of cases; ( ) = Percentage; BMI = Body Mass Index; Ag85 = Antigen 85.