Kaplan-Meier survival curves for patients hospitalized with pneumococcal LRTI according to manifestation group. The numbers at risk represent the number of patients still at risk of death at a given time during the follow-up period. LRTI, lower respiratory tract infection.
Skovgaard et al. BMC Infectious Diseases 2013 13:197 doi:10.1186/1471-2334-13-197