Skip to main content

Table 4 Clinical characteristics of tuberculosis cases and factors associated with unreported cases

From: Factors associated with unreported tuberculosis cases in Spanish hospitals

  Total Reported   Unreported   Bivariate analysis   Multivariate analysis  
  N = 592 N = 507   N = 85   OR (95 % CI) p-value OR (95 % CI) p-value
Variables   n % n %     
Smoking          
 Non-smoker 318 272 85.5 46 14.5 1.64 [0.94-3.00] 0.084   
 Smoker 194 176 90.7 18 9.3 Ref. Ref.   
 Ex-smoker 80 59 73.8 21 26.3 3.46 [1.72-7.03] 0.001   
Alcohol use          
 Yes 116 104 89.7 12 10.3 Ref. Ref.   
 No 467 395 84.6 72 15.4 1.56 [0.84-3.14] 0.162   
 Unknown 9 8 88.9 1 11.1 1.20 [0.04-7.67] 0.877   
HIV status          
 Positive 25 23 92 2 8 Ref. Ref.   
 Negative 446 384 86.1 62 13.9 1.74 [0.49-11.9] 0.435   
 Not known by patient 110 91 82.7 19 17.3 2.25 [0.59-16.2] 0.264   
 Unknown 11 9 81.8 2 18.2 2.48 [0.23-27.0] 0.431   
Previous tuberculosis treatment          
 No 543 464 85.5 79 14.5 Ref. Ref.   
 Yes 34 29 85.3 5 14.7 1.04 [0.34-2.56] 0.942   
 Unknown 15 14 93.3 1 6.7 0.48 [0.02-2.42] 0.436   
Drug resistance          
 No 579 496 85.7 83 14.3 Ref. Ref.   
 Yes 13 11 84.6 2 15.4 1.15 [0.16-4.47] 0.861   
Chest radiograph          
 Abnormal with cavitation 208 191 91.8 17 8.2 Ref. Ref.   
 Abnormal without cavitation 284 235 82.7 49 17.3 2.33 [1.32-4.29] 0.003   
 Normal 71 57 80.3 14 19.7 2.75 [1.25-5.96] 0.012   
 Unknown 29 24 82.8 5 17.2 2.37 [0.71-6.72] 0.149   
Microbiology          
 Smear-positive 287 260 90.6 27 9.4 Ref. Ref.   Ref.
 Smear-negative and  culture-positive 222 179 80.6 43 19.4 2.30 [1.38-3.91] 0.001 1.87 (1.07-3.28) 0.028
 Smear-negative and  culture-negative 67 55 82.1 12 17.9 2.11 [0.97-4.36] 0.059 1.59 (0.68-3.72) 0.280
 Other 16 13 81.3 3 18.8 2.29 [0.48-7.80] 0.264 1.24 (0.30-5.06) 0.759
Tuberculosis involvement          
 Pulmonary 405 362 89.4 43 10.6 Ref. Ref.   Ref.
 Extrapulmonary 71 54 76.1 17 23.9 2.65 [1.38-4.94] 0.004 2.07 (1.05-4.09) 0.035
 Mixed 44 36 81.8 8 18.2 1.89 [0.77-4.18] 0.156 1.50 (0.63-3.53) 0.353
 Unknown 72 55 76.4 17 23.6 2.61 [1.36-4.84] 0.005 2.01 (0.97-4.15) 0.059
  1. HIV: Human immunodeficiency virus