Table 1.
Baseline Characteristics of the LIFE Study Population According to Categories of Baseline Ankle Brachial Index Measures
| Baseline Characteristic (N) |
ABI: Mean (SD) |
|||
|---|---|---|---|---|
| ABI Groups |
p-value* | |||
| <0.90 N=211 |
0.90–1.30 N=1318 |
>1.30 N=73 |
||
| Age group | ||||
| 70–79 | 97 (10.6) | 782 (85.1) | 40 (10.6) | 0.002 |
| 80–89 | 113 (16.6) | 536 (78.6) | 33 (16.6) | |
| Gender | ||||
| Female | 143 (13.3) | 911 (84.6) | 23 (2.1) | <0.001 |
| Male | 67 (12.8) | 407 (77.7) | 50 (9.5) | |
| Education group | ||||
| HS or less | 88 (15.3) | 469 (81.4) | 19 (3.3) | 0.04 |
| Post HS | 121 (11.8) | 846 (82.9) | 54 (5.3) | |
| SBPP group | ||||
| < 8 | 96 (13.4) | 580 (81.4) | 37 (5.2) | 0.50 |
| 8–9 | 114 (12.8) | 738 (83.1) | 36 (4.0) | |
| Diabetes | ||||
| No | 143 (12.0) | 1002 (84.1) | 47 (3.9) | 0.006 |
| Yes | 67 (16.4) | 316 (77.3) | 26 (6.4) | |
| Hypertension | ||||
| No | 30 (7.0) | 349 (87.2) | 21 (5.2) | <0.001 |
| Yes | 180 (15.0) | 969 (80.7) | 52 (4.3) | |
| Race/ethnicity | ||||
| African-American | 49 (17.2) | 232 (81.4) | 4 (1.4) | |
| Caucasian | 144 (11.9) | 1002 (82.7) | 65 (5.4) | 0.008 |
| Other | 16 (16.0) | 80 (80.0) | 4 (4.0) | |
| Smoking | ||||
| Never | 89 (10.9) | 692 (84.6) | 37 (4.5) | |
| Former | 94 (13.3) | 580 (81.8) | 35 (4.9) | <0.001 † |
| Current | 22 (45.8) | 25 (52.1) | 1 (2.1) | |
| Not reported | 5 (19.2) | 21 (80.8) | 0 (0.0) | |
*
Chi-squared tests
†
Excluding not reported category