|
A. Sensitivity
| | | |
| |
Positive
|
Negative
| |
|
Positive
|
67 (39%)
|
22 (13%)
|
89 (52%)
|
|
Negative
|
20 (12%)
|
61 (36%)
|
81 (48%)
|
|
Total
|
87 (51%)
|
83 (49%)
|
170 (100%)
|
|
Sensitivity of Direct Smear = 0.51 (0.43–0.59)
|
|
Sensitivity of Concentrated Smear = 0.52 (0.44–0.61)
|
|
Sensitivity of Direct + Concentrated Smear = 0.64 (0.56–0.72)a, b
|
|
B. Specificity
| | | |
| |
Positive
|
Negative
| |
|
Positive
|
0 (0%)
|
12 (11%)
|
12 (11%)
|
|
Negative
|
1 (1%)
|
96 (88%)
|
97 (89%)
|
|
Total
|
1 (1%)
|
108 (99%)
|
109 (100%)
|
|
Specificity of Direct Smear = 0.99 (0.94–1.0)a
|
|
Specificity of Concentrated Smear = 0.89 (0.81–0.95)b
|
|
Specificity of Direct + Concentrated Smear = 0.88 (0.80–0.94)b
|
|
Gold Standard: Sputum Culture + Clinical Criteria
|
|
A. Sensitivity
| | | |
| |
Positive
|
Negative
| |
|
Positive
|
67 (34%)
|
27 (14%)
|
94 (48%)
|
|
Negative
|
20 (10%)
|
82 (42%)
|
102 (52%)
|
|
Total
|
87 (44%)
|
109 (56%)
|
196 (100%)
|
|
Sensitivity of Direct Smear = 0.44 (0.36–0.52)
|
|
Sensitivity of Concentrated Smear = 0.48 (0.40–0.56)
|
|
Sensitivity of Direct + Concentrated Smear = 0.58 (0.50–0.66)a, b
|
|
B. Specificity
| | | |
| |
Positive
|
Negative
| |
|
Positive
|
0 (0%)
|
7 (8%)
|
7 (8%)
|
|
Negative
|
1 (1%)
|
75 (90%)
|
76 (92%)
|
|
Total
|
1 (1%)
|
82 (99%)
|
83 (100%)
|
|
Specificity of Direct Smear = 0.99 (0.93–1.0)
|
|
Specificity of Concentrated Smear = 0.92 (0.83–0.97)
|
|
Specificity of Direct + Concentrated Smear = 0.90 (0.81–0.96)b
|
