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Table 1 Characteristic features of definite and probable TB cases

From: Incidence of tuberculosis among school-going adolescents in South India

SI.No Participant ID Surveillance Visit (n)a Gender Age (years) BAZb Smearc Cultured Symptomse Past TBe Hx TB contacte, f Chest X Ray reult g QFT Resulth TST Value (mm)i Person days of follow up
Cough Fever Haemoptysis Night sweats
1 12–104 Active 3 Male 17 Normal 2/2 2/2 + - - - - + 3/3 Positive 16 706
2 20–116 Active 1 Female 16 Under weight 2/2 2/2 + + - - - - 3/3 NA 15 472
3 33–266 Active 2 Male 15 Normal 2/2 2/2 + - - - - - 3/3 Positive 24 718
4 42–107 Passive 1 Female 12 Under weight 2/2 2/2 + - + - - - 3/3 NA 7 721
5 72–601 Active 1 Female 15 Under weight 2/2 2/2 + + - + - - 3/3 Negative 5 711
6 23–061 Passive 1 Female 17 Normal 0/2 2/2 - - - - - - 0/3 Positive 25 725
7 52–301 Passive 1 Female 15 Under weight 0/2 1/2 - - - - - - 0/3 Positive 17 725
8 83–013 Passive 1 Female 15 Under weight 0/2 1/2 - - - - - - 0/3 NA 23 706
9 37–404 Active 1 Female 15 Normal 0/2 0/2 - - - - - - 3/3 Positive 10 706
10 37–430 Active 1 Male 16 Normal 0/2 0/2 - - - - - + 3/3 Positive 19 732
11 40–310 Passive 1 Male 16 Under weight 0/2 0/2 - - - - - - 3/3 NA 18 706
12 77–503 Active 1 Male 14 Normal 0/2 0/2 - - - - - + 3/3 NA 20 729
13 87–155 Passive 1 Female 14 Normal 0/2 0/2 - - - - - - 3/3 NA 13 722
14 26–101 Active 1 Male 12 Normal    - - - - - - 3/3 Positive 22 710
  1. a The details in the table were corresponding to n th visit of the participant
  2. b BAZ body mass index for Age Z – score; WHO cut offs 2007, Growth reference 5–19 years; calculated using WHO – ANTHRO software (version 3.2.2); Underweight (<− 2), Overweight (> +1), Normal (−2 to +1)
  3. c 2/2 = two samples smears were positive for Acid fast bacilli of two samples, 1/2 = one sample positive of two, 0/2 = both samples were negative
  4. d 2/2 = two sputum samples had shown the isolation of Mycobacterium tuberculosis (M.tb) on Geno Type MTBC test kit (HAIN kit) of two samples; 1/2 = one sample had M.tb of two; 0/2 = both samples were negative for M.tb
  5. e Cumulative response of both parent and subject has been considered in case of history of past TB, TB exposure, Symptoms suggestive of TB
  6. f Recent contact with a TB case at least for 8 h a week; in the period of 3 months
  7. g 3/3 = Radiological evidence of TB - chest x-ray (posterior-anterior view) had been reported as abnormal for TB by three radiologists of three radiologists; 0/3 = No radiologists had reported chest X – ray abnormal for TB
  8. h QFT quantiferon, NA result Not available
  9. i TST tuberculin skin test, the result value corresponds to the nearest one to the diagnostic ward (DGW) visit