Additional file 1 of Methotrexate and relative risk of dementia amongst patients with rheumatoid arthritis: a multi-national multi-database case-control study

Additional file 1 : Supporting Information.xlsx Description of data: Excel document containing 1). Table S1. of characteristics of databases utilised in this study 2). Table S2. of clinical diagnosis codes for disease variables 3). Table S3. of the age specific breakdown of dementia occurrence in 5 year intervals with duration of drug treatment usage 4). Table S3. showing the association between of days of use of methotrexate treatment and dementia diagnosis in people with rheumatoid arthritis and 5). Figure S1. showing the association between methotrexate and sulfasalazine treatment with dementia diagnosis in people with rheumatoid arthritis.