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Table 3 Factors affecting for ZN sputum smears microscopy reading in peripheral diagnostic facilities, Addis Ababa, Ethiopia

From: Misdiagnosis of pulmonary tuberculosis and associated factors in peripheral laboratories: a retrospective study, Addis Ababa, Ethiopia

Variables False reading COR (95% CI) P value AOR (95% CI) P value
No Yes
Separate TB laboratory room
 Yes 31 29 1    
 No 25 50 2.14 (1.06, 4.30) 0.033* 0.46 (0.74, 2.89) 0.41
Training on ZN microscopy
 Yes 14 46 1    
 No 18 57 0.96 (0.43, 2.14) 0.93   
Cheek quality of sputum
 Yes 32 28 1    
 No 27 48 2.03 (1.02, 4.06) 0.04* 0.63 (0.12, 3.28) 0.59
Use new slides
 Yes 6 54 1    
 No 5 70 1.56 (0.45, 5.37) 0.49   
Filter reagent before use
 Yes 31 29 1    
 No 26 49 2.02 (1.02, 4.04) 0.048* 1.54 (0.14, 4.17) 0.73
Prepared and use IQC
 Yes 25 10 1    
 No 84 16 0.47 (0.32, 1.79) 0.53   
Having lenses tissue
 Yes 20 15 1    
 No 66 34 0.68 (0.29, 1.17) 0.13   
Good reagent storage condition
 Yes 34 66 1    
 No 19 16 0.43 (0.28, 1.15) 0.12   
Received feed back
 Yes 6 69 1    
 No 5 55 0.96 (0.28, 3.30) 0.94   
Owner ship
 Private 26 19 1    
 Government 67 23 0.87 (0.42, 1.80) 0.47   
Having ZN reagents
 Yes 57 4 1    
 No 63 11 2.49 (0.87, 12.29) 0.08   
  1. * Statistically significant P < 0.05