Use of ICD-9 diagnosis codes in epidemiologic surveys may significantly underestimate the incidence and impact of invasive pneumococcal disease locally.
Hsu
Li Yang
LY
Koh
Tse Hsien
TH
D006306:Health Surveys; D006760:Hospitalization; D006801:Humans; D015994:Incidence; D038801:International Classification of Diseases; D011008:Pneumococcal Infections / Q000453:epidemiology*; D012846:Singapore / Q000453:epidemiology