Comparison of demographic characteristics between asymptomatic and symptomatic carotid artery stenosis patients undergoing carotid revascularization procedures in the Nationwide Inpatient Sample by age group (<65 and ≥65 years)
| Age <65 years | Age ≥65 years | |||||
|---|---|---|---|---|---|---|
| Asymptomatic | Symptomatic | OR (95% CI) | Asymptomatic | Symptomatic | OR (95% CI) | |
| N (%) | 193 761 (90.0) | 21 571 (10.0) | – | 626 572 (92.8) | 48 673 (7.2) | – |
| Elective admission (n (%)) | 156 335 (80.8) | 7672 (35.6) | 7.62 (7.40 to 7.86)* | 515 691 (82.5) | 18 778 (38.6) | 7.49 (7.34 to 7.63)* |
| Age (years) (mean (SD)) | 58.2 (11.2) | 56.8 (13.6) | 1.05 (1.02 to 1.07)* | 75.1 (14.2) | 75.6 (15.0) | 0.99 (0.99 to 0.99)* |
| Women (n (%)) | 80 532 (41.6) | 8590 (39.8) | 1.08 (1.05 to 1.11)* | 264 859 (42.3) | 18 985 (39.0) | 1.15 (1.12 to 1.17)* |
| Race (n (%)) | ||||||
| White | 133 033 (89.4) | 14 297 (86.7) | Ref | 452 021 (91.2) | 34 079 (88.9) | Ref |
| Black | 7533 (5.1) | 1105 (6.7) | 0.73 (0.69 to 0.78)* | 17 881 (3.6) | 1810 (4.7) | 0.74 (0.71 to 0.78)* |
| Hispanic | 6620 (4.5) | 896 (5.4) | 0.79 (0.74 to 0.85)* | 20 215 (4.1) | 1920 (5.0) | 0.79 (0.76 to 0.83)* |
| Asian | 1489 (1.0) | 176 (1.1) | 0.91 (0.78 to 1.06) | 5369 (1.1) | 527 (1.4) | 0.77 (0.70 to 0.84)* |
| Payer (n (%)) | ||||||
| Medicare | 37 843 (20.5) | 3474 (17.2) | Ref | 559 613 (90.0) | 42 620 (88.4) | Ref |
| Medicaid | 18 845 (10.2) | 2435 (12.0) | 0.71 (0.67 to 0.75)* | 3915 (0.6) | 473 (1.0) | 0.63 (0.57 to 0.69) |
| Private | 119 631 (64.9) | 12 468 (61.6) | 0.88 (0.85 to 0.92)* | 55 777 (8.9) | 4878 (10.1) | 0.87 (0.84 to 0.90)* |
| Self-Pay | 7960 (4.3) | 1854 (9.2) | 0.39 (0.37 to 0.42)* | 2305 (0.4) | 266 (0.6) | 0.66 (0.58 to 0.75)* |
| Charlson Comorbidity Index | 1.8 (2.2) | 2.0 (2.4) | 0.85 (0.83 to 0.84) | 1.8 (2.2) | 2.1 (2.5) | 0.77 (0.76 to 0.78)* |
OR of receiving revascularization for asymptomatic over symptomatic carotid stenosis compared with the reference group.
*p<0.0001.