Table 2.
Whole sample characteristics & bivariable associations (N = 2495).
| Variables | Psychological Well-Being | p b | ||
|---|---|---|---|---|
| High (20) | Medium (17–19) | Low (5–16) | ||
| Normal sleep quality, mean (SD) | 52 (33.07) | 50 (29.45) | 43 (35.51) | 0.000 |
| Normal sleep quality, median (IQR a) | 71 (30, 88) | 66 (27, 87) | 59 (26, 85) | 0.002 |
| Poor sleep quality, mean (SD) | 77 (31) | 75 (30) | 80 (33) | 0.001 |
| Poor sleep quality, median (IQR) | 71 (26, 97) | 73 (25, 98) | 74 (31, 99) | 0.005 |
| Gender, n (%) c | 0.001 | |||
| Female | 347 (63) | 743 (74) | 812 (86) | |
| Male | 207 (37) | 259 (26) | 127 (14) | |
| Education | 0.015 | |||
| 985 project | 121 (15) | 147 (16) | 115 (16) | |
| 211 project | 149 (18) | 166 (18) | 145 (20) | |
| Yi Ben | 153 (19) | 179 (19) | 139 (19) | |
| Er Ben | 208 (25) | 224 (24) | 193 (26) | |
| San Ben | 196 (23) | 219 (23) | 141 (19) | |
| Household conditions | 0.004 | |||
| State & society administrator (cadre in governments), Manager (Manager or department leader in state company, private company, foreign company and joint company) | 103 (16) | 122 (13) | 98 (13) | |
| Private enterprise owner (having large scale company), Technological specialist (teacher, engineer, doctor, academic researcher, lawyer, culture worker) | 135 (17) | 183 (19) | 127 (17) | |
| Clerk & office worker (secretary, accountant, computer operator), Individual entrepreneur (one-person company with unlimited liability) | 192 (24) | 213 (22) | 198 (27) | |
| Commercial & service worker (tertiary industry workers), Industrial worker (worker in factory, mining and transport industry) | 237 (30) | 269 (28) | 201 (27) | |
| Farmer, Unemployed | 133 (17) | 166 (17) | 118 (16) | |
| Marital or love status | 0.016 | |||
| Yes | 293 (42) | 377 (30) | 193 (35) | |
| No | 398 (58) | 879 (70) | 355 (65) | |
| Physical activity | 0.001 | |||
| Physically inactive | 273 (43) | 476 (36) | 231 (43) | |
| Less active (1–4 occasions per month) | 309 (49) | 632 (48) | 287 (53) | |
| More active (5+ occasions per month) | 49 (8) | 219 (16) | 19 (4) | |
| Body mass index | 665 (27) | 1579 (63) | 251 (10) | 0.006 |
| Place of birth | 0.003 | |||
| Rural | 388 (47) | 428 (38) | 233 (43) | |
| Urban | 436 (53) | 698 (62) | 312 (57) | |
| Subjects | 0.020 | |||
| Humanities and Social Sciences | 186 (22) | 253 (25) | 122 (19) | |
| Science | 252 (30) | 319 (31) | 165 (26) | |
| Engineering | 403 (48) | 458 (44) | 339 (54) | |
| Age, year, n (%) | 0.017 | |||
| 18 | 94 (14) | 153 (12) | 84 (14) | |
| 19–20 | 116 (17) | 179 (14) | 113 (19) | |
| 21–24 | 322 (48) | 615 (49) | 269 (46) | |
| 25–30 | 135 (20) | 298 (24) | 117 (20) | |
a IQR refers to inter-quartile range. b Significance level determined that the non-parametric Kruskal-Wallis test was used for assessing continuous independent variables, and chi-square tests for the categorical variables. c Column percentages, because of rounding, may not be exact 100.