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Table 4 Predictors of pulmonary tuberculosis (PTB) among subjects identified as having cough and provided one or more sputum samples among residents of two peri-urban neighbourhoods in Karachi, May 2002-November 2002; (n = 114)

From: Hyperendemic pulmonary tuberculosis in peri-urban areas of Karachi, Pakistan

Variable n* PTB+(%) Crude OR** 95% CI**
Blood in sputum     
   Yes 32 5 (15.6) 0.98 0.27 – 3.36
   No 82 13 (15.9) 1.00 -
Night sweat     
   Yes 43 7 (16.3) 1.06 0.33 – 3.31
   No 71 11 (15.5) 1.00 -
Weight loss     
   Yes 78 11 (14.1) 0.68 0.22 – 2.18
   No 36 7 (19.4) 1.00 -
Presently has fever     
   Yes 55 8 (14.6) 0.83 0.27 – 2.55
   No 59 10 (17.0) 1.00 -
Loss of appetite in last two months     
   Yes 76 12 (15.8) 1.00 0.31 – 3.33
   No 38 6 (15.8) 1.00 -
Feeling of increased fatigue     
   Yes 92 13 (14.1) 0.56 0.16 – 2.09
   No 22 5 (22.7) 1.00 -
  1. * n = total in given category of the variable
  2. ** OR = odds ratio; CI = confidence interval