Table 1.
Participants’ demographic information.
| Demographics | Total (N=1245) | Male (n=466) | Female (n=779) | Chi-square t test (df)a | P valueb | |
| Age (years), mean (SD) | 20.5 (2.6) | 20.8 (2.7) | 20.3 (2.4) | 2.99 (1244) | .003 | |
| Body mass index (kg/m2), mean (SD) | 22.3 (6.5) | 23.6 (7.0) | 21.5 (5.8) | 5.55 (1244) | <.001 | |
| Grade, n (%) | 13.0 (4) | .01 | ||||
|
|
One | 190 (15.3) | 52 (11.2) | 138 (17.7) |
|
|
|
|
Two | 357 (28.7) | 135 (29.0) | 222 (28.5) |
|
|
|
|
Three | 295 (23.7) | 127 (27.3) | 168 (21.6) |
|
|
|
|
Four and five | 286 (23.0) | 104 (22.2) | 182 (23.3) |
|
|
|
|
Graduate student or above | 117 (9.4) | 48 (10.3) | 69 (8.9) |
|
|
| Birthplace, n (%) | 6.6 (2) | .04 | ||||
|
|
Urban area | 858 (68.9) | 305 (65.5) | 533 (71.0) |
|
|
|
|
Rural area | 360 (28.9) | 146 (31.3) | 214 (27.5) |
|
|
|
|
International students | 27 (2.2) | 15 (3.2) | 12 (1.5) |
|
|
| Ethnicity, n (%) | 3.7 (1) | .06 | ||||
|
|
Han | 1079 (86.7) | 415 (89.1) | 664 (85.2) |
|
|
|
|
Others | 166 (13.3) | 51 (10.9) | 115 (14.8) |
|
|
| Average monthly expense (yuan), n (%) | 6.1 (4) | .19 | ||||
|
|
<500 | 36 (2.9) | 18 (3.9) | 18 (2.3) |
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|
|
|
500 to 1000 | 191 (15.3) | 80 (17.2) | 111 (14.2) |
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|
|
|
1000 to 1500 | 374 (30.0) | 139 (29.8) | 235 (30.2) |
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|
|
|
1500 to 2000 | 319 (25.6) | 107 (23.0) | 212 (27.2) |
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|
|
|
>2000 | 325 (26.1) | 122 (26.2) | 203 (26.1) |
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|
aThe age and the body mass index was tested using a t test. Others were tested using a Pearson chi-square test.
bThe P value here refers to whether the difference in these demographic characteristics between participants of different genders was statistically significant.