Inter-rater Reliability Assessment for Motivating Factors in Blood Donation Using Cohen's Kappa Analysis

Abstract

The identification of motivating factors for blood donation, especially for new donors, is important for donor recurrence and retention to ensure that blood stock is always maintained. The aim of this study is to identify the inter-rater reliability of the motivating factors for blood donation, in order to verify that the identified factors are reliable and can be used for further research work. The result from the reliable item has the potential to be used to discover possible blood donation candidates, particularly among the younger generation. It involved two professionals called experts from health industry to give the rating. Therefore, this research performed the Cohen Kappa analysis in order to obtain the mutual agreement value among raters. The result shown the Kappa value is 0.7 which is considered to be in substantial agreement, with 12 out of 16 pairs had perfect agreement, 3 had perfect disagreement while there was one item, which does not have the same level of consensus among raters. The reliability evidence from previously identified factors was provided by these findings and significantly proven for creating appropriate incentive schemes for individual potential donors, which could help raise donation volumes without jeopardising blood supplies. The agreed-upon parameters can then be utilised to create any promotional scheme to ensure that blood is always available and never runs out.