Table II.
Functional outcomes for MLE Amputees by Performance on the Six Minute Walk Test (6MWT).
| 6MWT | ||||
|---|---|---|---|---|
| No walk (n=10) | Slow (n=22) | Fast (n=31) | P | |
| Social Integration | .01 | |||
| Low | 5/10 (50) | 5/22 (23) | 3/31 (10) | |
| Medium | 4/10 (40) | 4/22 (18) | 5/31 (16) | |
| High | 1/10 (10) | 13/22 (59) | 23/31 (74) | |
| Age | .03 | |||
| <45 | 0/10 (0) | 3/13 (35) | 11/31 (35) | |
| 45-65 | 3/10 (30) | 10/22 (4) | 13/31 (42) | |
| > 65 | 7/10 (70) | 9/22 (41) | 7/31 (23) | |
| Gender | .004 | |||
| Male | 4/10 (40) | 12/22 (54) | 26/31 (84) | |
| Female | 6/10 (60) | 10/22 (45) | 5/31 (16) | |
| Race | .64 | |||
| Caucasian | 7/10 (70) | 16/22 (73) | 24/31 (77) | |
| Black | 2/10 (20) | 5/22 (23) | 3/31 (10) | |
| Other | 1/10 (10) | 1/22 (4) | 4/31 (13) | |
| Obese (BMI > 30) | 3/10 (30) | 8/22 (36) | 3/31 (10) | .06 |
| Comorbidities | ||||
| Smoke | 4/10 (40) | 2/22 (9) | 5/31 (16) | .22 |
| Diabetes | 8/10 (80) | 13/22 (59) | 11/31 (35) | .008 |
| CVA | 4/10 (40) | 6/22 (27) | 1/31 (3) | .003 |
| COPD | 1/10 (10) | 3/13 (35) | 1/31 (3) | .29 |
| Etiology | .01 | |||
| Dysvascular | 10/10 (100) | 14/22 (64) | 12/33 (39) | |
| Trauma | 0/10 (0) | 4/22 (18) | 14/33 (45) | |
| Other | 0/10 (0) | 4/22 (18) | 5/31 (16) | |
| Type | .01 | |||
| BKA | 5/10 (50) | 17/22 (77) | 27/31 (87) | |
| Knee/AKA | 5/10 (50) | 5/22 (23) | 4/31 (13) | |
| Pre-operative Ambulatory Status | .35 | |||
| Ambulatory | 7/8 (87) | 18/22 (82) | 29/31 (93) | |
| Non-ambulatory | 1/8 (12) | 4/22 (18) | 2/31 (6) | |
| Time from Amputation | .03 | |||
| 3-12 mo | 5/10 (50) | 10/22 (45) | 6/31 (19) | |
| 1-4 y | 4/10 (40) | 2/22 (9) | 13/31 (42) | |
| > 5 y | 1/10 (10) | 10/22 (45) | 12/33 (39) | |
| Employment | .11 | |||
| Working | 0/10 (0) | 2/22 (9) | 9/31 (29) | |
| Unemployed | 0/10 (0) | 2/22 (9) | 3/31 (10) | |
| Retired | 6/10 (60) | 9/22 (41) | 6/31 (19) | |
| On Disability | 4/10 (40) | 9/22 (41) | 13/31 (42) | |
| Insurance (footnote) | .009 | |||
| Private | 1/10 (10) | 6/22 (27) | 16/31 (52) | |
| State | 9/10 (90) | 16/22 (73) | 15/31 (48) | |
| Graduated High School | 5/10 (50) | 20/22 (91) | 28/31 (90) | .01 |
| Marital Status | .13 | |||
| Married | 3/10 (30) | 7/22 (32) | 16/31 (52) | |
| Single | 7/10 (70) | 15/22 (68) | 15/31 (48) | |
P values are from the Cochran-Armitage Trend Test for variables with two categories and the Chi-square test for variables with three or more categories.
BMI Body Mass Index; COPD Chronic Obstructive Pulmonary Disease; CVA Cerebral Vascular Accident; BKA Below the Knee Amputation; AKA Above the Knee Amputation.