Comparison of demographic characteristics between asymptomatic and symptomatic carotid artery stenosis patients undergoing carotid revascularization procedures in the Nationwide Inpatient Sample by region
| Asymptomatic | Symptomatic | OR (95% CI) | |
|---|---|---|---|
| West | |||
| Race (n (%)) | |||
| White | 93 220 (86.4) | 8462 (83.3) | Ref |
| Black | 2270 (2.1) | 276 (2.7) | 0.75 (0.66 to 0.84)* |
| Hispanic | 8503 (7.9) | 1011 (10.0) | 0.76 (0.71 to 0.82)* |
| Asian/Pacific Islander | 3941 (3.7) | 409 (4.0) | 0.87 (0.79 to 0.97)† |
| Insurance (n (%)) | |||
| Medicare | 95 077 (75.4) | 8093 (66.1) | Ref |
| Medicaid | 4108 (3.3) | 572 (4.7) | 0.61 (0.56 to 0.67)* |
| Private | 26 103 (20.7) | 3323 (27.1) | 0.67 (0.64 to 0.70)* |
| Self-Pay | 813 (0.6) | 255 (2.1) | 0.27 (0.24 to 0.31)* |
| Midwest | |||
| Race (n (%)) | |||
| White | 108 562 (96.0) | 9001 (94.5) | Ref |
| Black | 3466 (3.1) | 444 (4.7) | 0.65 (0.59 to 0.72)* |
| Hispanic | 808 (0.7) | 59 (0.6) | 1.14 (0.87 to 1.48) |
| Asian/Pacific Islander | 262 (0.2) | 20 (0.2) | 1.09 (0.69 to 1.71) |
| Insurance (n (%)) | |||
| Medicare | 149 170 (73.7) | 11 567 (67.8) | Ref |
| Medicaid | 5469 (2.7) | 675 (4.0) | 0.63 (0.58 to 0.68)* |
| Private | 44 771 (22.1) | 4345 (25.5) | 0.80 (0.77 to 0.83)* |
| Self-Pay | 2980 (1.5) | 485 (2.8) | 0.48 (0.43 to 0.53)* |
| South | |||
| Race (n (%)) | |||
| White | 264 927 (89.8) | 21 278 (86.9) | Ref |
| Black | 15 697 (5.3) | 1714 (7.0) | 0.74 (0.70 to 0.77)* |
| Hispanic | 12 754 (4.3) | 1321 (5.4) | 0.78 (0.73 to 0.82)* |
| Asian/Pacific Islander | 1717 (0.6) | 166 (0.7) | 0.83 (0.71 to 0.97) |
| Insurance (n (%)) | |||
| Medicare | 254 439 (74.1) | 18 757 (67.1) | Ref |
| Medicaid | 9412 (2.7) | 1137 (4.1) | 0.61 (0.57 to 0.65)* |
| Private | 73 769 (21.5) | 6878 (24.6) | 0.79 (0.77 to 0.81)* |
| Self-Pay | 5556 (1.6) | 1190 (4.3) | 0.34 (0.32 to 0.37)* |
| Northeast | |||
| Race (n (%)) | |||
| White | 118 371 (92.5) | 9640 (7.5) | Ref |
| Black | 3981 (3.1) | 481 (4.5) | 0.67 (0.61 to 0.74)* |
| Hispanic | 4769 (3.7) | 425 (4.0) | 0.91 (0.83 to 1.01) |
| Asian/Pacific Islander | 938 (0.7) | 107 (1.0) | 0.71 (0.58 to 0.87)† |
| Insurance (n (%)) | |||
| Medicare | 98 801 (73.6) | 7682 (68.6) | Ref |
| Medicaid | 3771 (2.8) | 524 (4.7) | 0.56 (0.51 to 0.61)* |
| Private | 30 832 (23.0) | 2800 (25.0) | 0.86 (0.82 to 0.90)* |
| Self-Pay | 915 (0.7) | 191 (1.7) | 0.37 (0.32 to 0.44)* |
OR of receiving revascularization for asymptomatic over symptomatic carotid stenosis compared with the reference group.
*p<0.0001, †p<0.01.