Paediatric Assessment Instruments

Paediatric instruments in this library cover four areas. Developmental screening tools such as the Ages and Stages Questionnaire and the Hammersmith Infant Neurological Examination identify children whose development is not following the expected course. Behavioural and emotional questionnaires such as the Child Behavior Checklist, the Strengths and Difficulties Questionnaire and the Vanderbilt ADHD Diagnostic Rating Scale describe difficulties across settings. Pain scales such as FLACC, CRIES, the Neonatal Infant Pain Scale, the Neonatal Pain and Discomfort Scale and the Comfort Scale are observational, because the child cannot self-report. Motor and functional measures such as the Gross Motor Function Measure and the Pediatric Balance Scale track ability over time in children with neurological conditions.

The consistent feature across all four is that the informant is usually not the patient. Parents, teachers and clinicians each see a different slice of the child's behaviour, and their reports agree only moderately.

Multi-informant design is the norm rather than an optional extra in paediatric behavioural assessment. Instruments such as the Child Behavior Checklist and the Strengths and Difficulties Questionnaire have separate parent, teacher and self-report forms precisely because agreement between them is modest and the disagreement is informative. Analysing only the parent form because it was easiest to collect discards that information.

Age banding is the second structural feature. Most paediatric instruments have age-specific forms, items and norms, and a child who crosses a band boundary during a longitudinal study changes instrument version mid-study. That has to be planned for at design time, because the scores across the boundary are not directly comparable and the analysis has to account for it.

Check the age range and the version, then check what happens when a participant ages out of it. In studies with long follow-up this is a real and frequently overlooked problem.

Check who consents and who assents. Paediatric data collection involves parental consent and, depending on age and jurisdiction, the child's own assent, and a digital instrument has to be able to record both and to route the questionnaire to the right person.

Check the norms. Several widely used paediatric instruments were normed in one country and are used in others without local norms, which shifts the proportion of children classified as being in the clinical range. Where local norms exist, use them and say so. Finally, licensing in this group is tighter than average, and some instruments require a qualified user level.

Why do parent and teacher reports disagree?

Because they observe the child in different settings with different demands. The disagreement is data rather than noise: a difficulty that appears at school but not at home says something specific. Collect both where the instrument provides both and report them separately.

How is pain assessed in babies and young children?

Observationally, using an instrument matched to the age. CRIES, the Neonatal Infant Pain Scale and the Neonatal Pain and Discomfort Scale cover newborns; FLACC covers young children; the Comfort Scale covers sedated and ventilated paediatric patients. All score behaviour and physiology rather than reported experience.

What happens when a child ages out of an instrument's range mid-study?

Plan for it before enrolment. Either choose an instrument that spans the whole follow-up period, or define in advance how the transition will be handled and analysed. Scores from different age forms are not directly comparable.

Who gives consent for paediatric assessments?

A parent or legal guardian consents, and depending on the child's age and the local requirements the child also gives assent. A digital system needs to capture both, and route each questionnaire to the correct respondent.