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  • Title: The panorama of cerebral palsy in Sweden part XIII shows declining prevalence in birth-years 2011-2014.
    Author: Himmelmann K, Påhlman M.
    Journal: Acta Paediatr; 2023 Jan; 112(1):124-131. PubMed ID: 36153696.
    Abstract:
    AIM: To describe epidemiology and characteristics of cerebral palsy (CP) in western Sweden 1954-2014. METHODS: Population-based study covering 105 935 live births in the area in 2011-2014. Birth characteristics, neuroimaging findings and outcome were analysed and prevalence calculated. Non-parametric methods were used for group comparisons. RESULTS: CP was diagnosed in 192 children. Crude prevalence had decreased to 1.81 per 1000 live births (p = 0.0067). Gestational age-specific prevalence for <28 gestational weeks was 74.8 per 1000 live births, 46.6 for 28-31 weeks, 5.8 for 32-36 weeks and 1.1 per 1000 for >36 weeks of gestation. Hemiplegia, found in 36.2%, had declined (p = 0.03). Diplegia was found in 36.2% and tetraplegia 5.3%. Dyskinetic CP accounted for 18.6% and ataxia for 3.7%. Neuroimaging revealed maldevelopments in 14%, white matter lesions in 44%, cortical/subcortical lesions in 13% and basal ganglia lesions in 17%. Prenatal aetiology was considered in 34%, peri- or neonatal in 48%, while in 18% aetiological period remained unclassified. Motor outcome in children who needed neonatal care had improved (p = 0.04). Motor function in dyskinetic CP had improved compared to previous cohorts (p = 0.008). CONCLUSION: The prevalence of CP has declined, mainly in term-born and in hemiplegia, and motor severity has changed compared to previous cohorts.
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