ArticleBMC musculoskeletal disorders2021
Using Z-score to optimize population-specific DDH screening: a retrospective study in Hangzhou, China.
Article in BMC musculoskeletal disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Early Screening for Developmental Dysplasia of the Hip: Sonographic Reference Values, Risk Factors, and Treatment Considerations.International journal of neonatal screening · 2025Article
- Deciphering the past status and future tendency: a comprehensive scientometric study on developmental dysplasia of the hip.Journal of orthopaedic surgery and research · 2024Article
- Risk factors for misdiagnosis in children with developmental dysplasia of the hip: a retrospective single centre study.BMJ paediatrics open · 2023Article
- Incidence and Epidemiological Characters of Developmental Dysplasia of the Hip in Lianyungang: Based on Ultrasound Screening: A Retrospective Study.International journal of general medicine · 2022Article
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7 authors.
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Abstract
backgroundDDH (Developmental Dysplasia of the Hip) screening can potentially avert many morbidities and reduce costs. The debate about universal vs. selective DDH ultrasonography screening in different countries revolves to a large extent around effectiveness, cost, and the possibility of overdiagnosis and overtreatment. In this study, we proposed and evaluated a Z-score enhanced Graf method to optimize population-specific DDH screening.
methodsA total of 39,710 history ultrasonography hip examinations were collected to establish a sex, side specific and age-based Z-scores model using the local regression method. The correlation between Z-scores and classic Graf types was analyzed. Four thousand two hundred twenty-nine cases with follow-up ultrasonographic examinations and 5284 cases with follow-up X-ray examinations were used to evaluate the false positive rate of the first examination based on the subsequent examinations. The results using classic Graf types and the Z-score enhanced types were compared.
resultsThe Z-score enhanced Graf types were highly correlated with the classic Graf's classification (R = 0.67, p < 0.001). Using the Z-scores ≥2 as a threshold could reduce by 86.56 and 80.44% the false positives in the left and right hips based on the follow-up ultrasonographic examinations, and reduce by 78.99% false-positive cases based on the follow-up X-ray examinations, respectively.
conclusionsUsing an age, sex and side specific Z-scores enhanced Graf's method can better control the false positive rate in DDH screening among different populations.
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