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Table 1 Baseline characteristics of the participants in relation to OHRQoL

From: Association between oral health-related quality of life and depressive symptoms in Chinese college students: Fitness Improvement Tactics in Youths (FITYou) project

Variable a Total score of OHIP-14 (male, n = 987) P value b Total score of OHIP-14 (female, n = 2474) P value b
= 0 1–6 > 6 = 0 1–6 > 6
Participants, no. (%) 299 (30.3) 379 (38.4) 309 (31.3)   659 (26.6) 973 (39.3) 842 (34.0)  
Age (years) 18.8 ± 1.7 18.6 ± 1.2 18.7 ± 1.4 0.050 18.3 ± 1.1 18.3 ± 1.2 18.3 ± 1.2 0.606
Han ethnicity, no. (%) 257 (86.0) 333 (87.9) 270 (87.4) 0.753 557 (84.5) 817 (84.0) 683 (81.1) 0.147
BMI (kg/m2), no. (%)
 < 18.5 (underweight) 43 (14.4) 54 (14.2) 52 (16.8)   132 (20.0) 183 (18.8) 191 (22.7)  
 18.5–24.9 (normal) 173 (57.9) 221 (58.3) 200 (64.7)   438 (66.5) 651 (66.9) 550 (65.3)  
 ≥ 25 (overweight) 83 (27.8) 104 (27.4) 57 (18.4) 0.047 89 (13.5) 139 (14.3) 101 (12.0) 0.250
No sibling, no. (%) 215 (71.9) 246 (64.9) 187 (60.5) 0.012 400 (60.7) 552 (56.7) 432 (51.3) 0.001
Breakfast consumption ≥ 5 times a week, no. (%) 233 (77.9) 279 (73.6) 213 (68.9) 0.043 527 (80.0) 741 (76.2) 589 (70.0) < 0.001
Smoking status, no. (%)
 Never 261 (87.3) 321 (84.7) 262 (84.8)   654 (99.2) 968 (99.5) 832 (98.8)  
 Former 16 (5.4) 26 (6.9) 16 (5.2)   2 (0.3) 5 (0.5) 7 (0.8)  
 Current 22 (7.4) 32 (8.4) 31 (10.0) 0.651 3 (0.5) 0 (0.0) 3 (0.4) 0.202
Current drinkers, no. (%) 82 (27.4) 128 (33.8) 125 (40.5) 0.003 31 (4.7) 61 (6.3) 62 (7.4) 0.106
Parental education level ≥ high school, no. (%) 131 (43.8) 148 (39.1) 93 (30.1) 0.002 239 (36.3) 337 (34.6) 229 (27.2) < 0.001
Sleep duration (hours/day), no. (%)
 < 6 77 (25.8) 93 (24.5) 97 (31.4)   117 (17.8) 231 (23.7) 206 (24.5)  
 6–7 101 (33.8) 149 (39.3) 106 (34.3)   241 (36.6) 361 (37.1) 319 (37.9)  
 7–8 90 (30.1) 104 (27.4) 88 (28.5)   228 (34.6) 289 (29.7) 251 (29.8)  
 > 8 31 (10.4) 33 (8.7) 18 (5.8) 0.155 73 (11.1) 92 (9.5) 66 (7.8) 0.010
  1. BMI Body mass index, SDS Self-rating depression scale, OHIP-14 Oral health impact profile-14
  2. a Percentages were presented for dichotomous variables, and arithmetic means (standard deviations [SD]) were presented for continuous variables
  3. b Analysis of variance or χ2 test