Data were analysed using Statistical Package for Social Science (SPSS) programme version 19. The analysis of SF36 was done by using a special syntax. Multivariate analysis was preceded once assumptions were fulfilled. Multiple linear regressionswere used to determine the associations between factors and quality of life. The significant value was set at p≤0.05. The significant factors in determining the 8 component of quality of life scores was evaluated using independent t test. Ethical approval was obtained from Malaysia National University Ethical Committee and Malaysia National Medical Research Registry.