Incidence (%)
Sex Male 68(52.7)
  Female 61(47.3)
  Total 129(100)
Age, mean years (Standard Deviation) 45.9(17.5)
Chest X-ray* Lung area Unilateral 56(43.4)
  Bilateral 71(55.0)
Cavity Absent 50(38.8)
  Present 77(59.7)
Extent 1 14(10.9)
  2 78(60.5)
  3 35(27.1)
Grade of smear positivity 1+ 14(10.9)
  2+ 52(40.3)
  3+ 63(48.8)
Duration of cough** Less than 2 months 55(43.3)
  2 months or over 72(56.7)
*Laryngeal tuberculosis; 2 cases, **Unknown duration of cough; 2 cases
Table 1: Background of index cases.