Child Oral Health Impact Profile (COHIP)
Also known as: COHIP, Child Oral Health Impact Profile (COHIP)
The Child Oral Health Impact Profile (COHIP) is a 34-item instrument measuring oral health-related quality of life in children and adolescents aged 6-14 years. Developed by Broder and colleagues and refined through the National Institute of Dental and Craniofacial Research (NIDCR), the COHIP captures developmental and age-appropriate impacts of oral conditions (caries, malocclusion, traumatic injury) on children's functional well-being, emotional state, and social participation. The COHIP is the paediatric equivalent of OHIP-14 and has become the standard measure for child-centred outcomes in paediatric dental research.
Key highlights
- Developmentally appropriate: language and content tailored to children 6-14, capturing impacts (teasing, school absence) unique to childhood and adolescence; distinct from adult-oriented instruments
- Psychometrically sound with good internal consistency (Cronbach α = 0.82-0.87 for total scale) and acceptable test-retest reliability (ICC = 0.74-0.80) in paediatric populations
- Multidimensional: four domain subscales (function, emotion, social, school) enable granular understanding of oral health impact; allows tailored intervention targeting specific burden areas
- Validated internationally with translations in 20+ languages; cross-cultural validation confirms measurement equivalence and applicability in diverse child populations
- Responsive to intervention: demonstrates significant improvement following preventive programs, restorative treatment, and orthodontics, with moderate to large effect sizes
Intuition
This section is available to Pro members. Upgrade to Pro
How it works
This section is available to Pro members. Upgrade to Pro
When to use it
The COHIP is used in paediatric dental clinical settings to assess functional and emotional impact of oral conditions at baseline, guiding treatment planning toward patient-centred outcomes. It is the standard outcome measure in randomized controlled trials evaluating efficacy of preventive programs (school-based prevention, early intervention), restorative treatments (silver diamine fluoride, composite fillings), orthodontics, or trauma management in children. The COHIP is used in epidemiological surveys to estimate burden of oral disease and disparities in impact across socioeconomic and ethnic groups, and in health services research evaluating whether treatment improves child well-being.
Strengths & limitations
- Developmentally appropriate: language and content tailored to children 6-14, capturing impacts (teasing, school absence) unique to childhood and adolescence; distinct from adult-oriented instruments
- Psychometrically sound with good internal consistency (Cronbach α = 0.82-0.87 for total scale) and acceptable test-retest reliability (ICC = 0.74-0.80) in paediatric populations
- Multidimensional: four domain subscales (function, emotion, social, school) enable granular understanding of oral health impact; allows tailored intervention targeting specific burden areas
- Validated internationally with translations in 20+ languages; cross-cultural validation confirms measurement equivalence and applicability in diverse child populations
- Responsive to intervention: demonstrates significant improvement following preventive programs, restorative treatment, and orthodontics, with moderate to large effect sizes
- Self-report in children 6-11 may be affected by limited introspection, social desirability bias, or difficulty with abstract recall; parental rating provides useful corroboration but introduces reporter discordance
- Ordinal scale; parametric assumptions violated; non-parametric and ordinal regression analyses more appropriate than standard linear models
- Recall period (past month or longer) may not capture acute impacts (e.g., recent tooth trauma) or short-term treatment effects; modified versions with shorter windows have been suggested
- Does not distinguish causality: a child with caries-free teeth but severe anxiety about dentistry may report high impact for dental-related concerns; clinical context essential for interpretation
Common pitfalls
This section is available to Pro members. Upgrade to Pro
Applications
This section is available to Pro members. Upgrade to Pro
Frequently asked
Can I use COHIP in children younger than 6?
The COHIP was validated in children 6-14; younger children (3-5) may have difficulty with self-report scales. For preschool children, the OIDP-C or behaviour observation by parents/clinicians is more appropriate.
Should I use child self-report, parent report, or both?
Both provide valuable but different information. Child self-report captures subjective experience and emotional impact; parent report reflects parental perception and family burden. Clinicians should consider both, particularly when discordance exists. In research, child self-report is typically primary; parent report may be secondary or sensitivity analysis.
What is the minimal clinically important difference (MCID) for COHIP?
Published MCID estimates range from 10 to 15 points on the 0-136 scale. A change of ≥12 points represents clinically meaningful improvement; subscale MCID varies by domain. Smaller changes may reflect measurement error.
How does COHIP change with child age and development?
COHIP is valid across 6-14 years; some studies show younger children (6-9) report lower impact intensity than adolescents (12-14) even with similar disease, possibly due to developing self-awareness and social sensitivity. Normative data stratified by age may aid interpretation.
Sources
- 1.Broder, H. L., McGrath, C., & Cisneros, G. J. (2007). Questionnaire development: Face validity and item impact testing of the Child Oral Health Impact Profile. Community Dentistry and Oral Epidemiology, 35(Suppl 1), 8-19.
You have read it. What now?
Cite this page
ScholarGate. (2026, June 3). COHIP. ScholarGate. https://scholargate.app/dentistry/child-oral-health-qol