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Back ground: Tuberculosis is a major global health problem, Ethiopian ranks th
among 22 high burden countries. Common Laboratory diagnosis methods of tuberculo
sis are Ziehl-Neelsen light microscopy; light emitting diodes fluorescent microscopy in
resource limited countries like Ethiopia, however, detection of TB require skilled labora
tory personnel, continuous monitoring and quality improvement mechanisms.
Objective: To evaluate the performance of laboratory professionals and associated
factors on TB microscopy
Method: Institutional based cross sectional study was conducted, from Nov 5-30,
2015; 276 laboratory professionals were included in the study. Data were collected
using panel testing slide and questioner. Variables which showed association at p < 0.2
in the bivariate analysis were fitted to the multivariate binary logistic regression model.
OR with 95% Cl & P-value< 0.05 was used to measure association in multivariate
binary logistic regression.
Results: Of the respondents, 216 (78.3%) performed TB microscopy correctly; (95%
Cl: 73.2, 83.3); while 60(21.7%) participants committed major error. Only 3(1.1 %) of the
participants read all (10) slides exactly without any type of error. Those who participa
tion in decision making about laboratory issues in health facilities perform TB microsco
py correctly 60% times less likely than those who do not (AOR=0.38,95% Cl (0.19,
0.77). participants who involve in external Quality Assurance performers 2.07 times
more likely to perform TB microscopy as compared with those who do not
EQA(AOR=2.07,95% Cl (1.01,4.20). Respondents who used Standard Operating Pro
cedure while performing TB diagnosis in the laboratory had 9.59 times more likely to di
agnose TB correctly as compared to those who don't use SOP(AOR=9.59,95%CI
(2.45,37). Males are 2.86 times more likely to diagnose TB microscopy correctly than
females (AOR=2.86, 95% |
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