Hazard ratios of subsequent strokes post-vertebroplasty (2004.1.1–2008.12.31, n = 1989).

aAdjustments were made for demographic characteristics (i.e., age, sex, insurance level, geographic location, and urbanization level), co-morbidities (e.g., hypertension, diabetes, valvular heart disease, arrhythmia, cardiovascular disease and Charlson's co-morbidity index), medications (e.g., aspirin, nitrates, lipid lowering drugs, anti-coagulants, and NSAIDs), and baseline propensity scores.