O S Miettinen
Striving to deconfound the fundamentals of epidemiologic study design
Journal of clinical epidemiology
peripheral nerve injuries upper limb lead substantial disability pain aimed assess socioeconomic factors affect outcomes repaired reconstructed digital major nerve trunk injuries upper limb identified 670 individuals underwent surgical nerve repair reconstruction using sensory nerve autografts swedish national quality registry hand surgery 20102018 socioeconomic factors including education cohabitation type work sick leave immigrant status income gathered swedish statistical agency wwwscbse national diabetes register ndr calculated prevalence ratios pr assess relationship socioeconomic factors surgical outcomes nerve injuries individuals major nerve trunk injury higher quickdash scores lower income compared digital nerve injury individuals immigration background adjusted pr 20 95 ci 1232 history 4 weeks sick leave year surgery adjusted pr 18 95 ci 1131 education level tertiary adjusted pr 28 95 ci 1747 significantly higher quickdash scores recognizing impact nonbiological factors including immigration prior sick leave education level outcome nerve surgery crucial improving prognosis socioeconomically deprived individuals