Table 4

Readmission rate among patients with hip fractures in the non-DM, OAD, and insulin cohorts

ReadmissionModel IModel II
n(%)n(%)Adjusted HR (95% CI)P valueAdjusted HR (95% CI)P value
Within 30 days
 Non-DM cohort2438(88.8)307(11.2)Ref
 OAD cohort2082(87.7)291(12.3)1.16 (1.06 to 1.25)0.001Ref
 Insulin cohort308(82.8)64(17.2)1.60 (1.38 to 1.85)<0.0011.39 (1.20 to 1.61)<0.001
Within 90 days
 Non-DM cohort1602(58.4)1143(41.6)Ref
 OAD cohort1270(53.5)1103(46.5)1.12 (0.95 to 1.31)0.182Ref
 Insulin cohort157(42.2)215(57.8)1.51 (1.15 to 1.98)0.0031.38 (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.