Table 4 Demographic and characteristics by latent profile (N = 10,583)

Age, Mean (SD)

19.45 (1.57)

19.51 (1.90)

19.60 (1.96)

4.688

0.009

Gender

61.94

 < 0.001

 Male

525 (16.4%)

513 (11.4%)

500 (17.3%)

 Female

2679 (83.6%)

3979 (88.6%)

2387 (82.7%)

Ethnic group

 Han Chinese

3017 (94.2%)

4241 (94.4%)

2703 (93.6%)

1.975

0.372

 Ethnic Minority

187 (5.8%)

251 (5.6%)

184 (6.4%)

Place of origin

10.988

0.004

 Rural

2583 (80.6%)

3559 (79.2%)

2228 (77.2%)

 Urban

621 (19.4%)

933 (20.8%)

659 (22.8%)

First volunteer

21.595

 < 0.001

 Yes

1967 (61.4%)

2530 (56.3%)

1728 (59.9%)

 No

1237 (38.6%)

1962 (43.7%)

1159 (40.1%)

Highest Degree

95.222

 < 0.001

 Junior college

2725 (80.0%)

3428 (76.3%)

2306 (79.9%)

 Bachelor’s

442 (13.8%)

935 (20.8%)

509 (17.6%)

 Master’s and above

37 (1.2%)

129 (2.9%)

72 (2.5%)

Education Level

72.623

 < 0.001

 Senior college

2650 (82.7%)

3351 (74.6%)

2237 (77.5%)

 General Undergraduate

504 (15.7%)

1019 (22.7%)

584 (20.2%)

 Double-class institutions

50 (1.6%)

122 (2.7%)

66 (2.3%)

Marital status

6.455

0.040

 Single/Divorced

3177 (99.2%)

4429 (98.6%)

2844 (98.5%)

 Married

27 (0.8%)

63 (1.4%)

43 (1.5%)

Student leader experience

76.459

 < 0.001

 Yes

889 (27.7%)

1405 (31.3%)

1099 (38.1%)

 No

2315 (72.3%)

3087 (68.7%)

1788 (61.9%)

Political Appearance

44.999

 < 0.001

 Member of the Communist Youth League

1628 (50.8%)

2448 (54.5%)

1603 (55.5%)

 Preparatory member or member of the Communist Party of China

69 (2.2%)

157 (3.5%)

97 (3.4%)

 General public

1480 (46.2%)

1847 (41.7%)

1176 (40.7%)

 Others

27 (0.8%)

13 (0.3%)

11 (0.4%)