Predicting intention to use voluntary HIV counseling and testing services among health professionals in Jimma, Ethiopia, using the theory of planned behavior

Background: To endorse involvement in voluntary HIV counseling and testing (VCT), it is essential to recognize factors that influence people in deciding whether to access VCT services and their underlying route factors. Theory of planned behavior (TPB) constitutes a proficient framework for predicting behaviors and intentions. Objective: The aim of the study reported here was to assess the predicting ability of TPB in determining the intended use of VCT services among health professionals in Jimma, southwest Ethiopia. Methods: This was an institution-based cross-sectional quantitative study of a sample of 336 health professionals in 12 selected districts of Jimma, southwest Ethiopia between February 5 to March 28, 2012. Data were collected using structured questionnaire self-administered by the study participants. A hierarchal multivariable linear regression model was used to predict the role of TPB constructs that can influence the intention to use VCT services. Results: The constructs of TPB explained the variability in intention to use VCT by 27% (R-2 adjusted = 0.27). The standardized regression coefficients showed that the strongest predictor of intention to use VCT was subjective norms (beta= 0.32, P<30.0005)followed by attitude (beta= 0.21, P < 0.002). Perceived behavioral control was not a significant predictor of intention to use VCT among the study group (P = 0.12). Conclusion: The study revealed the possibility of describing the intention to use VCT among health professionals using TPB, with perceived social pressure being the leading predictor. In light of this, health intervention programs should be designed to develop health professionals' ability to resist norms that oppose the use of VCT and to change community-held norms against VCT use, provided they help individuals develop a positive attitude toward the services.