Readmission rate among patients with hip fractures in the non-DM, OAD, and insulin cohorts
| Readmission | Model I | Model II | ||||||
| No | Yes | |||||||
| n | (%) | n | (%) | Adjusted HR (95% CI) | P value | Adjusted HR (95% CI) | P value | |
| Within 30 days | ||||||||
| Non-DM cohort | 2438 | (88.8) | 307 | (11.2) | Ref | |||
| OAD cohort | 2082 | (87.7) | 291 | (12.3) | 1.16 (1.06 to 1.25) | 0.001 | Ref | |
| Insulin cohort | 308 | (82.8) | 64 | (17.2) | 1.60 (1.38 to 1.85) | <0.001 | 1.39 (1.20 to 1.61) | <0.001 |
| Within 90 days | ||||||||
| Non-DM cohort | 1602 | (58.4) | 1143 | (41.6) | Ref | |||
| OAD cohort | 1270 | (53.5) | 1103 | (46.5) | 1.12 (0.95 to 1.31) | 0.182 | Ref | |
| Insulin cohort | 157 | (42.2) | 215 | (57.8) | 1.51 (1.15 to 1.98) | 0.003 | 1.38 (1.05 to 1.81) | 0.020 |
Adjusted for age, sex, payroll bracket table, anesthesia type, and Charlson Comorbidity Index score.
Model I: comparison among the non-DM (ref), OAD, and insulin cohorts.
Model II: comparison between the OAD (ref) and insulin cohorts.
DM, diabetes mellitus; OAD, oral antidiabetic drug; ref, reference.