Table 1

Chest radiography in non-accidental injury

CitationStudy groupStudy type (level of evidence)Outcome (for non-accidental injury)Key resultsComments
Barsness et al, USA (2003)62 children with rib fractures (<3 years). Sub-analysis of 3 758 trauma evaluations) presenting to a US Level 1 Trauma CentreCase series with non-independent reference standard (3B)PPVRetrospective study
Paper95%Unclear how figure in paper is derived
Raw data analysis82.3 (70–91)%Criteria for diagnosis of non-accidental injury not defined
Carty and Pierce, UK (2002)467 (425 <2 years) children referred for second opinion as to cause of injuriesCase series with non-independent reference standard (3B)Specificity PPV100 (96–100)% 100 (96–100)%Retrospective personal case series
Bulloch et al, USA (2000)39 children (<12 months of age) identified as having rib fractures on basis of standard American radiology codesCase series with non-independent reference standard (3B)Positive predictive value82 (66.5–82.5)%Retrospective study
Each film reported by a single radiologist, with causality determined by case review involving 2 paediatricians
Small numbers
Cadzow and Armstrong, Australia (2000)18 infants (<2 years) with documented rib fractures in a tertiary referral paediatric centreCase series with non-independent reference standard (3B)Positive predictive value83 (58.6–96.4)%Retrospective study
Each child’s case reviewed by multi-disciplinary team to determine whether child was abused or not
Small numbers
Leventhal et al, USA (1993)215 children (<3 years) with fractures. Data collection from Emergency Medicine Department logs and Child Abuse RegisterCase series with non-independent reference standard (3B)Specificity100 (94–100)%Retrospective study
Garcia et al, USA (1990)Case review of 2 080 trauma evaluations at Level 1 trauma centre. 33 children (0–13 years) with a rib fractureCase series with non-independent reference standard (3B)Positive predictive value21 (9–39)%Retrospective review
No gold standard for NAI defined
Not specifically looking at rib fractures in non-accidental injury
Set in trauma centre
King et al, USA (1988)189 (<1 month to 13 years) children referred to an assessment team for investigation of abuse. 163 less than 2 years of ageCase series with non-independent reference standard (3B)Sensitivity18 (12.8–24.2)%Retrospective study
Not explicitly stated whether all children received a chest radiograph
Wide age range
Schweich and Fleisher, USA (1985)21 children (3 months to 15 years 4 months) admitted to paediatric emergency care facility with rib fracturesCase series with non-independent reference standard (3B)Positive predictive value23 (5–41)%Retrospective study
Small numbers
Wide age range
Merten et al, USA (1983)Initial recruitment of 904 infants and children (3 weeks to 16 years) with “strong clinical evidence of abuse”. 494 complete radiological examinations included in the analysisCase series with non-independent reference standard (3B)Age (years) stratified sensitivityRetrospective
<1 (n = 190)10 (6–15)%
1–2 (n = 101)8 (4–15)%
2–5 (n = 128)2.3 (0.5–6.7)%
>5 (n = 75)1.3 (0.0–7.2)%
All ages6.3 (4.3–8.8)%
Thomas, UK (1977)25 infants (<1 year) with rib fractureCase series with non-independent reference standard (3B)Positive predictive value24 (8–40)%Inpatients and outpatients analysed
Data collected 1969–1979
Small numbers