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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