Table 3 Changes in the number of tweets and retweets and emotional expression based on academic standing

Number of tweets

First-year

50.56

72.19

422.33

Second-year

27.48

184.89

599.26

Third-year

98.33

238.63

405.64

Fourth-year or higher

175.42

248.58

407.37

F-value

8.89 ^***

6.60 ^***

2.13

Number of retweets

First-year

12.23

23.37

66.31

Second-year

6.65

42.97

133.27

Third-year

19.42

42.36

94.96

Fourth-year or higher

34.53

51.14

73.14

F-value

4.43 ^**

1.18

2.75 ^*

Number of tweets with photos/videos

First-year

8.90

17.41

46.98

Second-year

4.91

33.14

79.58

Third-year

16.54

27.41

55.87

Fourth-year or higher

22.75

33.06

51.28

F-value

5.51 ^***

.85

1.92

Number of retweets with photos/videos

First-year

4.43

12.73

21.71

Second-year

2.79

24.09

45.14

Third-year

8.39

10.82

32.50

Fourth-year or higher

7.70

15.60

22.48

F-value

1.92

.59

1.77

Number of tweets related to COVID-19

First-year

0.00

0.01

0.10

Second-year

0.00

0.13

0.16

Third-year

0.00

0.17

0.17

Fourth-year or higher

0.00

0.17

0.16

F-value

 − 

3.49 ^*

.55

Number of retweets related to COVID-19

First-year

0.00

0.00

0.00

Second-year

0.00

0.00

0.01

Third-year

0.00

0.01

0.00

Fourth-year or higher

0.00

0.01

0.01

F-value

 − 

1.13

.71

Ratio of positive sentences

First-year

0.38

0.40

0.33

Second-year

0.39

0.29

0.29

Third-year

0.32

0.34

0.31

Fourth-year or higher

0.35

0.31

0.30

F-value

.95

3.58 ^*

.71

Ratio of negative sentences

First-year

0.22

0.20

0.26

Second-year

0.22

0.29

0.29

Third-year

0.25

0.27

0.28

Fourth-year or higher

0.26

0.28

0.30

F-value

.78

4.36 ^**

.93