Table 3 Demographic and characteristics by latent profile (N = 2569)

Age, Mean (SD)

19.76 (1.64)

19.61 (1.43)

19.59 (1.45)

1.293

0.275

Gender

20.247

 < 0.001

 Male

58 (2.26%)

236 (9.19%)

445 (17.32%)

 Female

175 (6.81%)

732 (28.49%)

923 (35.93%)

Ethnicity

3.416

0.181

 Han

224 (8.72%)

950 (36.98%)

1337 (52.04%)

 Ethnic Minority

9 (0.35%)

18 (0.70%)

31 (1.21%)

Grade

26.123

 < 0.001

 First Grade

118 (4.59%)

503 (19.58%)

824 (32.07%)

 Second Grade

94 (3.66%)

397 (15.45%)

454 (17.67%)

 Third Grade

17 (0.66%)

54 (2.10%)

76 (2.96%)

 Forth Grade

2 (0.08%)

10 (0.39%)

4 (0.16%)

 Fifth Grade

2 (0.08%)

4 (0.16%)

10 (0.39%)

Place of origin

 Urban

58 (2.26%)

220 (8.56%)

378 (14.71%)

7.226

0.027

 Rural

175 (6.81%)

748 (29.12%)

990 (38.54%)

Education level

10.723

0.097

 Junior college

167 (6.50%)

763 (29.70%)

1004 (39.08%)

 Bachelor’s

51 (1.99%)

161 (6.27%)

205 (7.98%)

 Master’s

10 (0.39%)

27 (1.05%)

54 (2.10%)

 Doctor’s

5 (0.19%)

17 (0.66%)

15 (0.58%)

Political Appearance

14.718

0.065

 Member of the Communist Party of China

6 (0.23%)

4 (0.16%)

16 (0.62%)

 Preparatory member of the Communist Party of China

9 (0.35%)

55 (2.14%)

78 (3.04%)

 Member of the Communist Youth League

165 (6.42%)

668 (26.00%)

899 (34.99%)

 General public

52 (2.02%)

238 (9.26%)

371 (14.44%)

 Others

1 (0.04%)

3 (0.12%)

4 (0.16%)

Student leaders

6.169

0.046

 Yes

65 (2.53%)

274 (10.67%)

448 (17.44%)

 No

168 (6.54%)

694 (27.01%)

920 (35.81%)

Perceived Stress, Mean (SD)

30.74 (4.40)

30.46 (4.21)

29.96 (6.86)

3.118

0.044

Perceived Social Support, Mean (SD)

52.64 (12.14)

59.11 (10.59)

67.43 (14.00)

207.742

 < 0.001