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Table 1 Profile of 12-year-old participants

From: The factors that influence the oral health-related quality of life in 12-year-old children: baseline study of a longitudinal research

  Female Male Total P
N Percentage N Percentage N Percentage
IOTN (DHC) treatment need
 No need 168 55.1% 153 53.9% 321 54.5% 0.845
 Borderline need 53 17.4% 53 18.7% 106 18.0%
 Definite need 84 27.5% 78 27.5% 162 27.5%
IOTN (AC) treatment need
 No need 249 81.6% 220 77.5% 469 79.6% 0.236
 Borderline need 40 13.1% 49 17.3% 89 15.1%
 Definite need 16 5.2% 15 5.3% 31 5.3%
DAI severity and treatment need
 Normal or minor malocclusion- no treatment need or slight need 169 55.4% 143 50.4% 312 53.0% 0.118
 Definite malocclusion- treatment selective 75 24.6% 68 23.9% 143 24.3%
 Severe malocclusion- treatment highly desirable 41 13.4% 46 16.2% 87 14.8%
 Very severe (handicapping) malocclusion-treatment mandatory 20 6.6% 27 9.5% 47 8.0%
ICON treatment need
 No 201 65.9% 182 64.1% 383 65.0% 0.644
 Yes 104 34.1% 102 35.9% 206 35.0%
ICON complexity
 Easy 87 28.5% 86 30.3% 173 29.4% 0.898
 Mild 158 51.8% 134 47.2% 292 49.6%
 Moderate 32 10.5% 35 12.3% 67 11.4%
 Difficult 16 5.2% 17 6.0% 33 5.6%
 Very difficult 12 3.9% 12 4.2% 24 4.1%
PAR
 Almost ideal occlusion 63 20.7% 59 20.8% 122 20.7% 0.530
 Acceptable occlusion 137 44.9% 117 41.2% 254 43.1%
 Malocclusion 105 34.4% 108 38.0% 213 36.2%
Periodontal status
 CPI score = 0 43 14.1% 37 13.0% 80 13.6% 0.705
 CPI score > 0 262 85.9% 247 87.0% 509 86.4%
Caries experience
  < SiC Index value 254 83.3% 245 86.3% 499 84.7% 0.314
  > =SiC Index value 51 16.7% 39 13.7% 90 15.3%
 DMFT = 0 203 66.6% 200 70.4% 403 68.4% 0.314
 DMFT > 0 102 33.4% 84 29.6% 186 31.6%
DMFT   Mean (SD)   Mean (SD)   Mean (SD)  
  305 0.59 (1.01) 284 0.54 (1.04) 589 0.57 (1.02) 0.598
  1. P: comparison for DMFT used the independent samples t test; others used the Mann-Whitney U test
  2. SiC Index Significant Caries Index; SiC index value (SD) was 1.68 (1.12)
  3. Results of statistical analysis