Table 1 Baseline characteristics of the incident CDI and control groups in the propensity score matched sample
Variable | Incidence CDI cases N = 28,874 | Controls N = 28,874 | Standardized difference in %# | Variance ratio |
|---|---|---|---|---|
Age | 67.55 ± 17.73 [median 70 (57–81)] | 67.67 ± 17.63 [median 70 (57–81)] | − 0.626 | 1.01 |
Female sex | 57.42% | 57.34% | 0.168 | 1.00 |
Race | ||||
White | 68.94% | 69.17% | − 0.493 | 1.00 |
Black | 13.92% | 13.71% | 0.573 | 1.01 |
Other | 17.12% | 17.14% | 0.061 | 1.00 |
Ethnicity_class Hispanic/other | 11.51% | 11.38% | 0.362 | 1.01 |
Insurance_status | ||||
Private/other | 20.62% | 20.60% | 0.056 | 1.00 |
Medicare | 65.20% | 65.47% | − 0.557 | 1.00 |
Medicaid | 14.18% | 13.93% | 0.618 | 1.01 |
Total CCI groups per record** | 1.12 ± 1.43 [median 0 (0–2)] | 1.10 ± 1.41 [median 0 (0–2)] | 1.707 | 1.03 |