Table 1.
Patient Readmission Demographics
| Variable | All Readmissions | Index | Nonindex | p-value |
|---|---|---|---|---|
| Total | 1985 | 1630 (82.1%) | 355 (17.9%) | |
| Procedure | ||||
| Clipping | 958 (48.3%) | 795 (48.8%) | 163 (45.9%) | 0.459 |
| Coiling | 961 (48.4%) | 779 (47.8%) | 182 (51.2%) | |
| Multiple | 66 (3.3%) | 56 (3.4%) | DS* | |
| Age | ||||
| 18–44 | 395 (19.9%) | 306 (18.8%) | 54 (15.2%) | 0.008* |
| 45–59 | 791 (39.8%) | 665 (40.8%) | 126 (35.5%) | |
| 60–74 | 639 (32.2%) | 512 (31.4%) | 127 (35.8%) | |
| >=75 | 195 (9.8%) | 147 (9.0%) | 48 (13.5%) | |
| Gender | ||||
| Male | 649 (32.7%) | 519 (31.8%) | 130 (36.6%) | 0.082 |
| Female | 1336 (67.3%) | 1111 (68.1%) | 225 (63.4%) | |
| Primary insurance | ||||
| Medicare | 638 (32.1%) | 492 (30.2%) | 146 (41.1%) | 0.0003* |
| Medicaid | 375 (18.9%) | 301 (18.5%) | 74 (20.9%) | |
| Private insurance | 759 (38.2%) | 659 (40.4%) | 100 (28.1%) | |
| Self-pay | 123 (6.2%) | 104 (6.4%) | 19 (5.4%) | |
| No charge | 11 (0.6%) | DS | DS | |
| Other | 77 (3.9%) | 63 (3.8%) | 14 (3.9%) | |
| Missing | DS | DS | DS | |
| Elixhauser comorbidity score | ||||
| 0 | 102 (5.1%) | 87 (5.3%) | 15 (4.2%) | 0.0001* |
| 1 | 289 (14.6%) | 255 (15.6%) | 34 (9.6%) | |
| 2 | 395 (19.9%) | 341 (20.9%) | 54 (15.2%) | |
| >= 3 | 1199 (60.4%) | 947 (58.1%) | 252 (71.0%) | |
| Median household income for patient’s ZIP code | ||||
| 0–25 percentile | 542 (27.3%) | 441 (27.1%) | 101 (28.5%) | 0.262 |
| 26–50 percentile | 505 (25.4%) | 410 (25.2%) | 95 (26.8%) | |
| 51–75 percentile | 467 (23.5%) | 379 (23.3%) | 88 (24.8%) | |
| 76–100 percentile | 438 (22.1%) | 374 (22.9%) | 64 (18.0%) | |
| Missing | 33 (1.7%) | 26 (1.6%) | DS | |
| All Patient Refined DRG: Severity of Illness Subclass | ||||
| Minor | 51 (2.6%) | 43 (2.6%) | DS | 0.076 |
| Moderate | 174 (8.8%) | 144 (8.8%) | 30 (8.5%) | |
| Major | 701 (35.3%) | 595 (36.5%) | 106 (29.9%) | |
| Extreme | 1059 (53.4%) | 848 (52.0%) | 211 (59.4%) | |
| Resident of state where procedure was performed | ||||
| Nonresident | 142 (7.2%) | 135 (8.3%) | DS | <0.0001* |
| Resident | 1843 (92.8%) | 1495 (91.7%) | 348 (98.0%) | |
| Discharged to another facility | ||||
| Yes | 1298 (65.4%) | 1025 (62.9%) | 273 (76.9%) | <0.0001* |
| No | 684 (34.5%) | 603 (37.0%) | 81 (22.8%) | |
| Missing | DS | DS | DS | |
| Discharge quarter | ||||
| Jan-March | 703 (35.4%) | 567 (34.8%) | 136 (38.3%) | 0.395 |
| April-June | 658 (33.1%) | 542 (33.3%) | 116 (32.7%) | |
| July-Sep | 624 (31.4%) | 521 (32.0%) | 103 (29.0%) | |
| Admission major complication | ||||
| Yes | 601 (30.3%) | 465 (28.3%) | 136 (38.3%) | 0.0003* |
| No | 1384 (69.7%) | 1165 (71.5%) | 219 (61.7%) | |
| Admission neurological complication | ||||
| Yes | 436 (22.0%) | 357 (21.9%) | 79 (22.25%) | 0.885 |
| No | 1549 (78.0%) | 1273 (78.1%) | 276 (77.75%) | |
| Treated for hydrocephalus | ||||
| Yes | 596 (30.0%) | 471 (28.9%) | 125 (35.2%) | 0.019* |
| No | 1389 (70.0%) | 1159 (71.1%) | 230 (64.8%) | |
| Ventriculostomy | ||||
| Yes | 580 (29.2%) | 471 (28.9%) | 109 (30.7%) | 0.497 |
| No | 1405 (70.8%) | 1159 (71.1%) | 246 (69.3%) | |
*
Data suppressed (DS) for patient privacy considerations, in accordance with the Healthcare Cost and Utilization Project NRD guidelines for publishing privacy protections.