Table 3.
Imbalance of GI risk factors across levels of the instrument relative to imbalance across levels of treatment.
| Variable | Prevalence Difference Ratio |
|---|---|
| U* | E[U*|Z=1]–E[U*|Z=0] |
| E[U*|X=1]–E[U*|X=0] | |
| Patient Characteristics | |
| Female Gender | 6% |
| Age ≥ 75 | 12% |
| History of GI Bleed | 10% |
| History of Peptic Ulcer Disease | 16% |
| History of Coronary Hospitalization or Procedure | 42% |
| Recent/Concomitant Medications | |
| Concomitant Use of GI-protective Drugs | 3% |
| Recent Use of GI-protective Drugs | 5% |
| Recent Use of Glucocorticoids | 32% |
| Recent Use of Warfarin | 27% |