Table 1.
Comparison of patient characteristics between vena cava filter users and non-users
| Characteristic | No
VCF N=74,136 |
VCF N=7,786 |
p-value | % receiving VCF | |||
|---|---|---|---|---|---|---|---|
| N | % | N | % | ||||
| Age group | 21–25 | 1,309 | 1.8% | 64 | 0.8% | <0.001 | 4.7% |
| 26–30 | 1,958 | 2.6% | 109 | 1.4% | 5.3% | ||
| 31–35 | 2,416 | 3.3% | 140 | 1.8% | 5.5% | ||
| 36–40 | 3,092 | 4.2% | 205 | 2.6% | 6.2% | ||
| 41–45 | 4,021 | 5.4% | 292 | 3.8% | 6.8% | ||
| 46–50 | 5,225 | 7.1% | 416 | 5.3% | 7.4% | ||
| 51–55 | 6,565 | 8.9% | 605 | 7.8% | 8.4% | ||
| 56–60 | 7,148 | 9.6% | 716 | 9.2% | 9.1% | ||
| 61–65 | 7,801 | 10.5% | 875 | 11.2% | 10.1% | ||
| 66–70 | 7,780 | 10.5% | 963 | 12.4% | 11.0% | ||
| 71–75 | 7,572 | 10.2% | 950 | 12.2% | 11.1% | ||
| 76–80 | 7,188 | 9.7% | 941 | 12.1% | 11.6% | ||
| 81+ | 12,061 | 16.3% | 1,510 | 19.4% | 11.1% | ||
| Gender | Female | 39,048 | 52.7% | 3,982 | 51.1% | <0.05 | 9.3% |
| Male | 35,088 | 47.3% | 3,804 | 48.9% | 9.8% | ||
| Race | White | 65,860 | 88.8% | 7,068 | 90.8% | <0.001 | 9.7% |
| Black | 6,746 | 9.1% | 540 | 6.9% | 7.4% | ||
| Other | 1,530 | 2.1% | 178 | 2.3% | 10.4% | ||
| Insurance | Other/Self-pay | 10,187 | 13.7% | 949 | 12.2% | <0.001 | 8.5% |
| Medicaid | 2,930 | 4.0% | 210 | 2.7% | 6.7% | ||
| Medicare | 24,275 | 32.7% | 2,603 | 33.4% | 9.7% | ||
| Commercial | 36,744 | 49.6% | 4,024 | 51.7% | 9.9% | ||
| Clot type | DVT only | 47,274 | 63.8% | 3,994 | 51.3% | <0.001 | 7.8% |
| PE only | 17,466 | 23.6% | 1,105 | 14.2% | 6.0% | ||
| PE with DVT | 9,396 | 12.7% | 2,687 | 34.5% | 22.2% | ||
| Comorbidity | Cancer | 11,491 | 15.5% | 1,613 | 20.7% | <0.001 | 12.3% |
| Metastatic cancer | 6,087 | 8.2% | 959 | 12.3% | <0.001 | 13.6% | |
| Heart failure | 14,069 | 19.0% | 1,470 | 18.9% | 0.853 | 9.5% | |
| Liver disease | 3,224 | 4.3% | 420 | 5.4% | <0.001 | 11.5% | |
| Renal disease | 20,516 | 27.7% | 2,233 | 28.7% | <0.001 | 9.8% | |
| Diabetes | 20,656 | 27.9% | 2,111 | 27.1% | 0.178 | 9.3% | |
| Stroke | 4,893 | 6.6% | 798 | 10.2% | <0.001 | 14.0% | |
| Hypertension | 45,317 | 61.1% | 4,954 | 63.6% | <0.001 | 9.9% | |
| Hyperlipidemia | 23,826 | 32.1% | 2,603 | 33.4% | <0.05 | 9.8% | |
| Atrial Fibrillation | 10,868 | 14.7% | 1,424 | 18.3% | <0.001 | 11.6% | |
| Cellulitis | 6,284 | 8.5% | 398 | 5.1% | <0.001 | 6.0% | |
| COPD | 23,630 | 31.9% | 2,528 | 32.5% | 0.256 | 9.7% | |
| Sepsis/Septic shock | 7,821 | 10.5% | 908 | 11.7% | <0.001 | 10.4% | |
| Infection/Pneumonia | 25,051 | 33.8% | 2,712 | 34.8% | <0.05 | 9.8% | |
| Anemia | 24,874 | 33.6% | 3,538 | 45.4% | <0.001 | 12.5% | |
| Myocardial infarction | 6,700 | 9.0% | 793 | 10.2% | <0.001 | 10.6% | |
| Trauma | 3,143 | 4.2% | 558 | 7.2% | <0.001 | 15.1% | |
| Thrombolytic therapy | 1,571 | 2.1% | 546 | 7.0% | <0.001 | 25.8% | |
| Embolectomy | 249 | 0.3% | 68 | 0.9% | <0.001 | 21.5% | |
| Unstable/ventilator | 3,455 | 4.7% | 567 | 7.3% | <0.001 | 14.1% | |
| Proximal DVT | 12,651 | 17.1% | 2,966 | 38.1% | <0.001 | 19.0% | |
| Lower DVT | 31,538 | 42.5% | 5,997 | 77.0% | <0.001 | 16.0% | |
| Bleeding | 4,612 | 6.2% | 1,173 | 15.1% | <0.001 | 20.3% | |
| Surgery | 14,340 | 19.3% | 2,177 | 28.0% | <0.001 | 13.2% | |
| Deceased | 4,200 | 5.7% | 436 | 5.6% | 0.812 | 9.4% | |
| Transfer | 1,907 | 2.6% | 155 | 2.0% | <0.001 | 7.5% | |
| Urban/rural status | Rural | 19,096 | 25.8% | 1,692 | 21.7% | <0.001 | 8.1% |
| Urban | 55,040 | 74.2% | 6,094 | 78.3% | 10.0% | ||
| Teaching status | Non-teaching | 36,792 | 49.6% | 3,210 | 41.2% | <0.001 | 8.0% |
| Teaching | 37,344 | 50.4% | 4,576 | 58.8% | 10.9% | ||
| Bed size | ≤75 beds | 2,500 | 3.4% | 99 | 1.3% | <0.001 | 3.8% |
| 76–135 beds | 6,216 | 8.4% | 331 | 4.3% | 5.1% | ||
| 136–275 beds | 18,761 | 25.3% | 1,718 | 22.1% | 8.4% | ||
| ≥276 beds | 46,659 | 62.9% | 5,638 | 72.4% | 10.8% | ||
Abbreviations: aOR=adjusted odds ratio; CI=confidence interval; VCF=vena cava filter; DVT=deep vein thrombosis; PE=pulmonary embolism; COPD=chronic obstructive pulmonary disease