Patient characteristics at baseline (at cancer diagnosis)
| Characteristic | Total cohort N=6754 |
| Age of cancer diagnosis (years) | |
| Mean (SD) | 56 (14) |
| Gender (%) | |
| Female | 3898 (58%) |
| Male | 2856 (42%) |
| Race (%) | |
| White | 5762 (85%) |
| Black | 703 (10%) |
| Unknown | 109 (2%) |
| Multiracial/Multicultural | 93 (1%) |
| Asian | 75 (1%) |
| American Indian/Alaska Native | 8 (<1%) |
| Native Hawaiian/Pacific Islander | 4 (<1%) |
| Mean body mass index (kg/m2) (SD) | 28.3 (6.84) |
| Cancer type (%) | |
| Breast | 1999 (30%) |
| Lymphoma | 1246 (18%) |
| Leukaemia | 841 (12%) |
| Gastrointestinal | 614 (9%) |
| Multiple myeloma | 605 (9%) |
| Genitourinary | 541 (8%) |
| Lung | 280 (4%) |
| Myelodysplastic syndrome | 190 (3%) |
| Sarcoma | 168 (2%) |
| Other | 149 (2%) |
| Head and neck | 121 (2%) |
| Stage at cancer diagnosis* | |
| In situ | 50 (1%)* |
| 1 | 808 (23%)* |
| 2 | 1086 (31%)* |
| 3 | 797 (22%)* |
| 4 | 802 (23%)* |
| CHA2DS2-VASc (%) | |
| 0 | 1726 (26%) |
| 1 | 3161 (47%) |
| 2 | 1119 (17%) |
| 3+ | 748 (11%) |
*Percentages represent percentage of patients that had stage at cancer diagnosis information available (3543 (52%) of the total cohort).
†Due to the predictive modelling described in this study, atrial fibrillation versus non-atrial fibrillation groups cannot be characterised due to the time-varying covariate nature of this variable.