| Peer teaching procedure | Number of studies |
| Instruction, modeling, role play and feedback | 23 (32.9%) |
| Instruction, prompt, and reinforcement | 8 (11.4%) |
| Instructions, modeling, prompt, role play and feedback | 7 (10%) |
| Instructions, modeling, prompt, and feedback | 7 (10%) |
| Oral instructions, role play and feedback | 6 (8.6%) |
| Instructions and modeling | 2 (2.8%) |
| General responses to peer questions about PMI | 13 (18.5%) |
| Not reported | 4 (5.7%) |