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. 2023 Nov 3;18(11):e0288226. doi: 10.1371/journal.pone.0288226

Table 1. Distribution of research objects.

Frequency Percentage
Gender
Male 2031 40.020
Female 3044 59.980
Grade
1 1815 35.764
2 2292 45.163
3 589 11.606
4 379 7.468
Total
5075 100