Table 1

Patient characteristics

Total study admissions4,368
Unique subjects2,582
Mean age (years)*63.6 ± 15.1
Female sex1,325 (51.3)
Ethnicity
    White1,517 (58.8)
    Black544 (21.1)
    Hispanic273 (10.6)
    Other/unknown248 (9.6)
Insurance
    Medicare1,428 (55.3)
    Medicaid332 (12.6)
    Commercial800 (31.0)
    Self-pay22 (0.9)
Admission service
    Medical2,702 (61.9)
    Surgical1,660 (38.0)
    Unknown6 (0.1)
Glomerular filtration rate (ml/min)64.6 ± 38.4
Mean modified Charlson Comorbidities Index4.9 ± 3.3
Received sliding-scale insulin3,479 (79.6)
Received scheduled insulin1,427 (32.7)
Received oral antihyperglycemic agents1,530 (35.0)
Received insulin secretagogues1,069 (24.5)
Actual LOS (days)4.9 ± 5.5
Deviation from DRG-based LOS (days)−0.8 ± 5.0
Mean blood glucose (mg/dl)168.8 ± 48.0
Mean days with hypoglycemia0.1 ± 0.41
Deceased during the admission43 (1.0)
Deceased within a year from discharge§388 (17.9)
  • Data are n, n (%), or means ± SD. Aggregate patient-level characteristics (e.g., demographics) were calculated at the individual patient level, and aggregate admission-level characteristics (e.g., LOS) were calculated at the individual admission level.

  • *At the time of the first study admission.

  • †Diabetes was excluded from the computation of the index.

  • ‡Patient-day weighted mean glucose level.

  • §Calculated for the last study period admission of the 2,582 unique study patients.