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. 2026 Jul 3;15:e93889. doi: 10.2196/93889

Table 1. Baseline information collected via a questionnaire and oral health examination.

Domains and variables Units and categories
Demographics
 Sex Male; female
 Age Years
 Ethnicity Han; other
 Height Centimeters
 Weight Kilograms
 School School name
 Grade Primary; middle; high
 Class Class name or number
Socioeconomic information
 Parent’s education level Junior high; high school; college; postgraduate
 Parent’s occupation Government; private; other
 Perceived dental cost burden Very cheap to very expensive
Caregiving context
 Relationship to child Father; mother; grandparent; other
 Primary caregiver Parent; relative; nanny; other
 Boarding status Yes; no
Dietary habits
 Sweet food or drink preferences Yes; No
 Use of sweets as rewards Never; sometimes; often; unknown
 Night-time snack intake Never; sometimes; often; unknown
 Daily sugar intake frequency ≥3 times/day: yes; no; unknown
 Tooth brushing start age <1 year; 1-2 years; etc
 Brushing frequency ≥3 times/d; twice daily; once daily; irregular
 Fluoride toothpaste use Yes; no; unknown
 Brushing assistance Self; helped
 Oral hygiene methods Toothbrush, floss, rinse, etc.
Dental treatment history
 Toothache in past 12 months Never; sometimes; often; unknown
 Dental visits Yes; no
 Time since last visit <6 months, 6-12 months, or >12 months
 Visit reason Check-up; treatment; prevention
 Dental cooperation level + + fully cooperative; + cooperative; – + mixed response; – negative; – – completely uncooperative
 General anesthesia experience Yes; no
Oral health knowledge and attitudes
 Oral health knowledge Correct; incorrect; don’t know
 Attitudes toward prevention Agree; disagree; don’t know
 Misconceptions about oral care True; false; don’t know
Parental burden and psychosocial status
 Time burden Never to always (5-point scale)
 Emotional stress Never to always (5-point scale)
 Social impact Never to always (5-point scale)
 Future concern for child Never to always (5-point scale)
Disability profile
 Disability type Vision; hearing; speech; intellectual; autism; physical; multiple; other
 Disability severity Mild; moderate; severe; very severe; unknown
 Age at diagnosis Years
 Diagnosing hospital Hospital name
 Medication or comorbidities Yes; no (specify)
Gastrointestinal and behavioral symptoms
 Stool frequency Times: week
 Stool consistency Normal; loose; watery
 Bloating Days/week
 Abdominal pain Days/week
 Sleep disturbances Times/week
Feeding behaviors
 Selective eating Never to always (5-point scale)
 Texture or color sensitivity Never to always (5-point scale)
 Food rituals Never to always (5-point scale)
 Disruptive mealtime behaviors Never to always (5-point scale)
 Food refusal behaviors Never to always (5-point scale)
Oral health examination variables
 Caries type (eg, no caries, crown caries, filled with/without caries), primary vs permanent teeth A: no caries; B: crown caries; C: filled with caries; D: filled without caries; E: missing due to caries; X: missing for other reasons
 Tooth trauma type Trauma types: enamel crack, enamel fracture, crown-dentine fracture, pulp exposure, avulsion, other
 Crown discoloration +; –
 Tooth mobility +; –
 Presence of fistula +; –
 Tooth eruption stage One-third; two-thirds; full
 Presence of supernumerary teeth Yes; no
 Presence of fissure sealant Yes; no
 Presence and type of dental fillings Yes; no (type noted)
 Missing teeth due to caries or other reasons Yes; no (reason noted)
 Exposure of pulp in traumatic crown fractures Yes; no
 Periodontal condition measured using plaque index and gingival index Clinical description