Patient alert cards (PACs) for abatacept (ORENCIA) inform patients and healthcare professionals (HCPs) about the risk of infections and allergic reactions. The study evaluates the effectiveness of the PACs in rheumatoid arthritis patients and HCPs, using process indicators (awareness, receipt, utility, knowledge, behaviour) and outcomes. Surveys of patients and HCPs in five European countries. A retrospective chart review permitted linking clinical and safety outcomes with survey responses. Data on 190 patients and 79 HCPs (50 physicians and 29 nurses) were analysed. Sixty percent of patients were aware of the PAC, of whom 95% had received it. Knowledge of risk of infection was higher among patients who had received the PAC vs those who had not (64% vs 46%; P = .013). Infections leading to hospitalisation increased with decreasing patient survey global scores: scores of ≥67%, 34%-67% and ≤ 33% were associated with hospitalisation rates of 2.5%, 5.2% and 8.4%, respectively (P = .4). Among HCPs 90% were aware and 68% had accessed the PAC. More nurses than physicians were aware (93% vs 88%), had accessed (78% vs 74%), read (90% vs 59%), distributed (81% vs 66%) and explained the content (94% vs 43%) of the PAC. Knowledge of risk of infection was higher among HCPs who had (91%) vs those who had not (73%) accessed the PAC (P = .053). PACs were effective in improving knowledge of key safety messages in patients and HCPs. This novel study design bridges the gap of linking process indicators with outcomes in the same patients, thereby strengthening the clinical relevance of patient surveys.