Table 1.
Patient characteristics by precipitation on day of outpatient visit. Values are numbers (percentages) unless stated otherwise
| Characteristics | No rain (n=9 577 631) | Rain (n=2 095 761) |
|---|---|---|
| Mean age (years) | 77.1 (0.3) | 77.0 (0.3) |
| Women | 5 955 240 (62.2) | 1 300 298 (62.1) |
| White ethnicity | 8 212 089 (85.8) | 1 828 173 (87.3) |
| Presence of chronic illness: | ||
| Coronary artery disease | 5 621 740 (58.7) | 1 221 287 (58.3) |
| Dementia | 1 325 363 (13.8) | 284 613 (13.6) |
| Atrial fibrillation | 2 008 665 (21.0) | 443 947 (21.2) |
| Chronic kidney disease | 2 372 803 (24.8) | 513 276 (24.5) |
| Chronic obstructive pulmonary disease | 3 097 885 (32.4) | 672 027 (32.1) |
| Diabetes | 4 043 526 (42.2) | 880 596 (42.0) |
| Congestive heart failure | 3 315 378 (34.6) | 717 980 (34.3) |
| Hyperlipidemia | 8 152 157 (85.1) | 1 784 397 (85.2) |
| Hypertension | 8 506 941 (88.8) | 1 865 444 (89.0) |
| Previous stroke or transient ischemic attack | 1 767 402 (18.5) | 383 537 (18.3) |
| Cancer | 1 695 309 (17.7) | 371 346 (17.7) |
| Rheumatoid arthritis | 6 026 728 (62.9) | 1 305 563 (62.3) |