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Table 1 Characteristics of participants (n = 1901)

From: Associations among oral health-related quality of life, subjective symptoms, clinical status, and self-rated oral health in Japanese university students: a cross-sectional study

Variable   
Male   1,095 (57.6)a
Self-rated oral health Very good 218 (11.5)
  Good 481 (25.3)
  Fair 844 (44.4)
  Poor 312 (16.4)
  Very poor 46 (2.4)
Oral health behavior   
 Regular check-up Yes 318 (16.7)
 Use of floss Yes 243 (12.8)
 Daily frequency of tooth-brushing 1 time 254 (13.4)
  2 times 1,402 (73.8)
  3 times or more 245 (12.9)
Subjective oral symptom   
 Oral pain Yes 53 (2.8)
 Recurrent aphthous stomatitis Yes 404 (21.3)
 Temporomandibular disorders   
  Pain in temporomandibular joint Never 1,490 (78.4)
  Rarely 251 (13.2)
  Sometimes 132 (6.9)
  Frequency 28 (1.5)
  Clicking Never 1,072 (56.4)
  Rarely 348 (18.3)
  Sometimes 256 (13.5)
  Frequency 225 (11.8)
Difficulty in mouth opening Never 1,521 (80.0)
  Rarely 190 (10.0)
  Sometimes 132 (6.9)
  Frequency 58 (3.1)
Clinical status   
 Percentage of bleeding on probing   33.65±27.96b
 Community Periodontal Index 0 249 (13.1)
  1 431 (22.7)
  2 928 (48.8)
  3 289 (15.2)
  4 4 (0.2)
 Malocclusion + 521 (27.4)
 Decayed, missing, and filled teeth score   2.01±2.88
Oral Health Impact Profile-14   
 Total   1.92±5.47
 Functional limitation   0.23±0.84
 Physical pain   0.36±1.09
 Psychological discomfort   0.40±1.15
 Physical disability   0.19±0.82
 Psychological disability   0.33±1.03
 Social disability   0.22±0.84
 Handicap   0.20±0.81
  1. anumber (%)
  2. bmean ± SD