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The mean score for intention of the respondents to donate blood voluntarily was 15.41 out of 25 with standard deviation of 4.42.The TPB variables explained 61.3% of the variance of intention to donate blood. Direct perceived behavioral control (β = 0.745, P 0.001), direct attitude (B = 0.295, P0.001) and direct subjective norm (β = 0.131, P 0.001) were significant predictors of the intention. Respondents' intentions are mainly determined by perceived barriers and, subjective norms, the attitude of respondents tow