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Table 1 List of the study variables

From: Common risk indicators for oral diseases and obesity in 12-year-olds: a South Pacific cross sectional study

  Description of the indicator
Socio-demographic variables
 Age (years) (Date of examination- date of birth)/365.25
 Sex Female/Male
 Region Islands / North / South
 Type of school Public/Private
 Cultural Ethnic group Melanesian / Polynesian / New Caledonian / Others
Oral diseases (clinical evaluation)
 Gingivitis a
  No Gingival index = 0 for both arches
  Localised Gingival index > 0 in only one group of teeth
  Generalised Gingival index > 0 for one or both arches
 Dental caries b
  No untreated carious lesion
  At least one untreated carious lesion
 Infectious dental process c
  No infectious dental process
  At least one infectious dental process
 Number of posterior functional units (PFU d) PFU < 4
4 ≤ PFU < 6
PFU ≥ 6
 Severe oro-facial dysmorphologies e None
One or more
 Type of breathing Nasal breathing
Oral (or mixed) breathing
Stature weight status (clinical evaluation)
 Body mass index BMI
  Under-weight BMI < -2SD
  Normal-weight -2SD ≤ BMI ≤ 1SD
  Over-weight BMI > 1SD
  Obesity BMI > 2SD
 Waist to height ratio WtHr  
  Normal WtHr <0.5
  At risk WtHr ≥0.5
Self-reported oral health and behaviours (questionnaire)
 Frequency of tooth brushing Less than once a day
Once or several times a day
 Usual drink when thirsty Water when thirsty
Sweet drinks when thirsty
 Has already smoked No, has never smoked
Yes, has already smoked
 Lunch at school No, the child has lunch at home
Yes, the child has lunch at school
 Experience with dental care No, has never visited a dentist
Yes, has already visited a dentist
 Dental anxiety (VAS 0 to 10) No or low anxiety (score ≤ 3)
Yes moderate to high anxiety (score > 3)
 Experience of recent dental pain No
 Prevention at school No experience
Already experienced
 Feel able to eat all kind of foods No, problems in eating some kind of foods
Yes, able to eat all kind of food
  1. a Løe and Silness index [19]
  2. b Stage 3 or 4 of Ekstrand classification [18]
  3. c Presence of an abscess, a cellulite, a tooth with pulpal exposure or a fistula
  4. d Number of Pairs of posterior teeth with at least one contact area during chewing [7, 9]
  5. e > 2 years from the normal age of eruption or dental overcrowding >4 mm from the occlusion plane, > 1 mm negative over-jet, > 6 mm positive over-jet, Unilateral or bilateral cross-bite and complete overbite, > 6 mm open overbite [20]