Table 1.
Baseline Characteristics by Index Thrombectomy Procedure
| Preoperative variables | Index Percutaneous Thrombectomy (n=7,335) | Index Open Thrombectomy (n=16,460) | p-value |
|---|---|---|---|
| Demographics | |||
| Age, years | 72.2(0.2) | 72.6(0.2) | .002 |
| Female sex | 49.1(46.5–51.6) | 50.9(49.3–52.6) | .23 |
| Race/ethnicity* | .97 | ||
| White | 79.5(77.2–81.6) | 79.1(77.6–80.6) | |
| Black | 10.5(9–12.3) | 10.8(9.8–12) | |
| Hispanic | 6.8(5.5–8.4) | 6.6(5.7–7.6) | |
| Asian or Pacific Islander | 1(0.6–1.7) | 1.2(0.9–1.7) | |
| American Indian or Alaska Native | 0.1(0–0.6) | 0.2(0.1–0.4) | |
| other | 2(1.4–2.9) | 2(1.6–2.6) | |
| Hospital Region | .0003 | ||
| Northeast | 14.8(12.9–17) | 20.2(18.4–22.2) | |
| Midwest | 24.6(22.1–27.3) | 24.1(22.2–26.2) | |
| South | 42.4(39.4–45.4) | 38(35.8–40.3) | |
| West | 18.2(16–20.7) | 17.6(16–19.4) | |
| Bed Size° | .40 | ||
| Small | 14.4(12.5–16.5) | 13.3(11.9–14.9) | |
| Medium | 27.5(24.9–30.2) | 26.4(24.5–28.4) | |
| Large | 58.1(55.2–61.1) | 60.3(58–62.5) | |
| Hospital Type | .001 | ||
| Rural | 3.1(2.3–41) | 3.3(2.6–4) | |
| Urban nonteaching | 19.8(17.5–22.2) | 15.2(13.8–16.8) | |
| Urban teaching | 77.2(74.6–79.5) | 81.5(79.8–83.1) | |
| Insurance type | .08 | ||
| Medicare | 67.8(65.3–70.1) | 71(69.4–72.6) | |
| Medicaid | 8.4(7.1–9.9) | 8.1(7.2–9.1) | |
| Private | 18.5(16.6–20.6) | 15.6(14.4–16.9) | |
| Self-pay | 2.4(1.7–3.3) | 2.8(2.3–3.5) | |
| Other** | 2.9(2.2–4) | 2.4(1.9–3) | |
| Income quartile⧺ | .66 | ||
| quartile 1 | 31.1(28.6–33.6) | 29.8(28.1–31.6) | |
| quartile 2 | 28.5(26.2–30.9) | 28(26.5–29.7) | |
| quartile 3 | 22.2(20.1–24.5) | 23.7(22.3–25.2) | |
| quartile 4 | 18.2(16.2–20.4) | 18.4(17–19.9) | |
| Comorbid conditions | |||
| Peripheral arterial disease | 70.8(68.4–73) | 68.6(66.9–70.2) | .13 |
| Prior peripheral vascular intervention | 6.4(5.3–7.9) | 4.8(4.2–5.6) | .021 |
| Lower extremity aneurysm | 4.0(3.1–5.2) | 2.7(2.3–3.4) | .024 |
| Atrial fibrillation | 28.7(26.4–31.1) | 36.5(34.9–38.2) | <0.0001 |
| Congestive heart failure | 25.8(23.6–28.1) | 29.6(28–31.1) | .007 |
| Hypertension | 79.1(76.9–81.1) | 80.3(78.8–81.6) | .35 |
| Smoker | 51.5(48.8–54.1) | 53.2(51.5–54.9) | .27 |
| Chronic lung disease | 23.7(21.6–26) | 28(26.5–29.6) | .002 |
| Renal failure | 21.4(19.3–23.6) | 21.1(19.8–22.6) | .84 |
| Diabetes | 30.8(28.5–33.3) | 29.5(28–31.1) | .38 |
| Hypercoagulable | 3.4(2.6–4.5) | 4.1(3.5–4.8) | .25 |
| Preoperative Anticoagulation | 22.6(20.5–24.7 | 23.9(22.4–25.4) | .32 |
| Cancer | 6.7(5.6–8.1) | 6.3(5.6–7.2) | .60 |
| Risk Analysis Index | 29.5(0.2) | 30.1(0.2) | .04 |
| Operative details | |||
| Multilevel | 34.8(32.3–37.3) | 36.3(34.6–38) | .32 |
| Bilateral Treated Levels | 13.0(11.3–14.8) | 14.1(13.0–15.5) | .27 |
| Aortoiliac | 27.1(24.8–29.4) | 25.5(24–27) | .25 |
| Femoropopliteal | 86.2(84.3–87.8) | 88.8(87.7–89.8) | .009 |
| Tibial | 23.2(21.1–25.5) | 25.8(24.3–27.3) | .07 |
| Fasciotomy | 4.8(3.8–6) | 6.9(6–7.8) | .006 |
| Compartment Syndrome | 3.9(3.01–5.0) | 5.5(4.8–6.4) | .02 |
| Weekend admission | 23.9(21.7–26.1) | 24.4(23–26) | .67 |