| Years | IWA | CWA | ||||
| Data Sources | Text N. | Words N. | Data Sources | Text N. | Words N. | |
| 2017-2021 | English for Specific Purposes | 25 | 4660 | Hunan University | 25 | 12,935 |
| Journal of English for Academic Purposes | 25 | 4010 | Dalian University of Technology | 25 | 10,886 | |
| Journal of second language writing | 25 | 5145 | Harbin Institute of Technology | 25 | 12,283 | |
| System | 25 | 4330 | East China Normal University | 25 | 12,824 | |
| Total | 100 | 18,145 | Total | 100 | 48,928 | |