title: Assessment of blood donation intention among medical students in Pakistan--An application of theory of planned behavior.
abstract: OBJECTIVE
  Theory of Planned Behavior proposes a model which can measure how human actions are guided. It has been successfully utilized in the context of blood donation. We employed a decision-making framework to determine the intention of blood donation among medical students who have never donated blood before the study.
  
  
  METHODS
  Survey responses were collected from 391 medical students from four various universities on a defined questionnaire. The tool composed of 20 questions that were formulated to explain donation intention based on theory of planned behavior. The construct included questions related to attitude, subjective norm and perceived behavior control, descriptive norm, moral norm, anticipated regret, donation anxiety and religious norm. Pearson's correlational relationships were measured between independent and dependent variables of intention to donate blood. ANOVA was applied to observe the model fit; a value of 0.000 was considered statistically significant. A multiple regression analysis was conducted to explore the relative importance of the main independent variables in the prediction of intention. Multi-collinearity was also evaluated to determine that various independent variables determine the intention. The reliability of measures composed of two items was assessed using inter-item correlations.
  
  
  RESULTS
  Three hundred and ninety-one medical students (M:F; 1:2.2) with mean age of 21.96 years ± 1.95 participated in this study. Mean item score was 3.8 ± 0.83. Multiple regression analysis suggested that perceived behavioral control, anticipated regret and attitude were the most influential factors in determining intention of blood donation. Donation anxiety was least correlated and in fact bore a negative correlation with intention. ANOVA computed an F value of 199.082 with a p-value of 0.000 indicating fitness of model. The value of R square and adjusted R square was 0.811 and 0.807 respectively indicating strong correlation between various independent and dependent variables.
  
  
  CONCLUSIONS
  Medical students as novice blood donors showed a positive attitude toward blood donation. Theory of planned behavior can be successfully utilized in determining the antecedents toward blood donation behavior.
authors.affiliation: Aga Khan Medical College, Karachi, Pakistan.
authors.forename: Anadil
authors.initials: A
authors.lastname: Faqah
authors.affiliation: Aga Khan Medical College, Karachi, Pakistan. Electronic address: bushra.moiz@aku.edu.
authors.forename: Bushra
authors.initials: B
authors.lastname: Moiz
authors.affiliation: Aga Khan Medical College, Karachi, Pakistan.
authors.forename: Fatima
authors.initials: F
authors.lastname: Shahid
authors.affiliation: Dow University of Health Sciences, Karachi, Pakistan.
authors.forename: Mariam
authors.initials: M
authors.lastname: Ibrahim
authors.affiliation: Pathology and Laboratory Medicine, The Aga Khan University, Karachi, Pakistan.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Raheem
mesh_terms: D000328:Adult; D001519:Behavior; D001782:Blood Donors / Q000523:psychology*; D005260:Female; D006801:Humans; D033182:Intention; D008297:Male; D008962:Models, Theoretical; D010154:Pakistan; D013337:Students, Medical / Q000523:psychology*
keywords: Blood donation; Intention; Medical students; Novice donors; Pakistan