biostudies-literatureUnknown26(1)Kastner AUniversitätsmedizin GreifswaldBMC medical research methodology47https://www.ebi.ac.uk/biostudies/studies/S-EPMC12930733biostudies-literatureMultiple imputation for missing values in ordinal variables from cancer registry data when performing Cox proportional hazards regression.PMC12930733Hoffmann WHusing JStang AHusing AKastner AfalseMultiple imputation for missing values in ordinal variables from cancer registry data when performing Cox proportional hazards regression.2026-01-01T00:00:00Z2026 Feb2026-07-16T20:26:35.097Z2026-07-10T03:09:10.506ZS-EPMC129307334164511410.1186/s12874-026-02790-8