Table 1.
Baseline Characteristics of Patients and Procedures
| No. (%) | |||
|---|---|---|---|
| Characteristic | Control (n = 115 851) |
Augmented (n = 10 541) |
P Value |
| Age, mean (SD) | 80.2 (7.2) | 80.0 (6.7) | .006 |
| Female sex | 89 815 (77.5) | 8244 (78.2) | .11 |
| White race | 109 240 (94.3) | 10 206 (96.8) | <.001 |
| State buy-in | 16 985 (14.7) | 1069 (10.1) | <.001 |
| Quan comorbidity score | .004 | ||
| 0 | 29 267 (25.3) | 2570 (24.4) | |
| 1 | 27 900 (24.1) | 2518 (23.9) | |
| 2 | 21 356 (18.4) | 1905 (18.1) | |
| 3+ | 37 328 (32.2) | 3548 (33.7) | |
| Prior inpatient admissions | <.001 | ||
| 0 | 76 565 (66.1) | 6721 (63.8) | |
| 1 | 18 331 (15.8) | 1783 (16.9) | |
| 2 | 10 584 (9.1) | 1014 (9.6) | |
| 3+ | 10 371 (9.0) | 1023 (9.7) | |
| Chronic pulmonary disease | 35 864 (31.0) | 3476 (33.0) | <.001 |
| Admitted at diagnosis | 26 720 (23.1) | 2894 (27.5) | <.001 |
| Fracture level | <.001 | ||
| Thoracic | 21 504 (18.6) | 2058 (19.5) | |
| Lumbar | 31 453 (27.1) | 3243 (30.8) | |
| Both | 1909 (1.6) | 237 (2.2) | |
| Unspecified | 60 985 (52.6) | 5003 (47.5) | |
| Advanced imaging | 46 512 (40.1) | 9116 (86.5) | <.001 |
| Procedure | |||
| Type | |||
| Vertebroplasty | 7488 (71.0) | ||
| Kyphoplasty | 2797 (26.5) | ||
| Both | 256 (2.4) | ||
| Multiple levels at once | 1776 (17.3) | ||
| Inpatient | 5740 (54.5) | ||
Abbreviations: SD, standard deviation.