Table 1 Comparison of baseline characteristics between exposure group and control. Continuous variables: p-value for difference calculated from unpaired Welch’s T-test
Baseline characteristic | Exposure group | Control group | P value for difference between groups |
|---|---|---|---|
Age, mean, range, years | 42.2 (19–70) | 42.0 (19–70) | 0.724 |
Sex % female | 58.1 | 58.1 | 1.00 |
Ethnicity % African American | 100 | 100 | 1.00 |
Charlson comorbidity index, mean | 0.505 | 0.505 | 1.00 |
Elixhauser comorbidity index | 1.33 | 1.30 | 0.646 |
Inpatient utilization, mean per 1000 | 100 | 100 | 1.00 |
Non emergent ED utilization, mean per 1000 | 367 | 367 | 1.00 |
Outpatient utilization, mean per 1000 | 3423 | 3855 | 0.207 |
Per member per month cost (USD), mean | 266 | 289 | 0.534 |
Inpatient paid (USD), mean | 710 | 732 | 0.916 |
Non emergent ED paid (USD), mean | 121 | 120 | 0.916 |
Outpatient paid (USD), mean | 392 | 387 | 0.960 |
Prescription paid (USD), mean | 920 | 1,284 | 0.232 |
Number of unique prescription claims in the pre-period | 23.5 | 22.2 | 0.513 |