**2. Systematic literature review method**

The systematic literature review method was used to review literature related to diabetes mellitus, type 2 diabetes mellitus, Community Health Workers, CHWs diabetic knowledge and diabetes mellitus, diabetic training of CHWs. The theories where two themes with their subthemes that has emerged. Other related sources were used to support the themes that has emerged from the theories. The following themes and their subthemes have emerged: (1) The use of Practice orientated theory for training development which include the agent, the recipient, the context, the dynamics, procedure and terminus; (2) The use of the ADDIE model in the development of a training programme for HBCs which include Analysis, Design, Development, Implementation and Evaluation.
