Table 3.
Baseline Characteristics of Patients and Procedures for Matched Samples
| No. (%) | |||
|---|---|---|---|
| Characteristic | Control (n = 9017) |
Augmented (n = 9017) |
P Value |
| Age, mean (SD) | 80.3 (7.0) | 80.0 (6.7) | .01 |
| Female sex | 7120 (79.0) | 7077 (78.5) | .43 |
| White race | 8776 (97.3) | 8765 (97.2) | .62 |
| State buy-in | 914 (10.1) | 902 (10.0) | .77 |
| Quan comorbidity score | .83 | ||
| 0 | 2195 (24.3) | 2194 (24.3) | |
| 1 | 2134 (23.7) | 2138 (23.7) | |
| 2 | 1660 (18.4) | 1628 (18.1) | |
| 3+ | 3028 (33.6) | 3057 (33.9) | |
| Prior inpatient admissions | .006 | ||
| 0 | 5921 (65.7) | 5707 (63.3) | |
| 1 | 1388 (15.4) | 1562 (17.3) | |
| 2 | 852 (9.5) | 860 (9.5) | |
| 3+ | 856 (9.5) | 888 (9.9) | |
| Chronic pulmonary disease | 2937 (32.6) | 3005 (33.3) | .28 |
| Admitted at diagnosis | 2496 (27.7) | 2536 (28.1) | .51 |
| Fracture level | .05 | ||
| Thoracic | 1611 (17.9) | 1754 (19.5) | |
| Lumbar | 2832 (31.4) | 2786 (30.9) | |
| Both | 208 (2.3) | 211 (2.3) | |
| Unspecified | 4366 (48.4) | 4266 (47.3) | |
| Advanced imaging | 9017 (100) | 9017 (100) | - |
| Procedure | |||
| Type | |||
| Vertebroplasty | 6404 (71.0) | ||
| Kyphoplasty | 2393 (26.5) | ||
| Both | 220 (2.4) | ||
| Multiple levels at once | 1562 (17.8) | ||
| Inpatient | 4944 (56.2) | ||
Abbreviations: SD, standard deviation.