Table 6.
Characteristics of responders versus non-responders.
| Baseline characteristics | All participants (n = 133) | Responders (n = 28) | Non-responders (n = 29) | P value |
|---|---|---|---|---|
| Age at time of surgery (years) | 46.71 (9.31) | 43.39 (10.16) | 48.79 (7.72) | 0.028 |
| BMI (kg/m2) | 48.90 (8.57) | 47.86 (8.33) | 52.29 (10.28) | 0.080 |
| Gender (% female) | 63 (82.89%) | 23 (78.79%) | 29 (100.00%) | 0.023* |
| Average household income ($) | 83,304 (30,368) | 76,390 (29,674) | 79,352 (22,269) | 0.673 |
| BMI change (baseline vs. 1 year) | 30.69 (6.97) | 30.95 (6.22) | 29.52 (6.99) | 0.438 |
| Diabetes | ||||
| No | 67 (50.38%) | 12 (42.86%) | 15 (51.72%) | 0.503 |
| Yes | 66 (49.62%) | 16 (57.14%) | 14 (48.28%) | |
| Insulin | ||||
| No | 103 (79.23%) | 20 (74.07%) | 22 (75.86%) | 0.877 |
| Yes | 27 (20.77%) | 7 (25.93%) | 7 (25.93%) | |
| Degenerative joint disease | ||||
| No | 99 (74.44%) | 21 (75.00%) | 19 (65.52%) | 0.434 |
| Yes | 34 (25.56%) | 7 (25.00%) | 10 (34.48%) | |
| Hyper cholesterol | ||||
| No | 78 (58.65%) | 15 (53.57%) | 15 (51.72%) | 0.889 |
| Yes | 55 (41.35%) | 13 (46.43%) | 14 (48.28%) | |
| Obstructed sleep apnea | ||||
| No | 48 (36.09%) | 10 (35.71%) | 9 (31.03%) | 0.708 |
| Yes | 85 (63.91%) | 18 (64.29%) | 20 (68.97%) | |
BMI = Body Mass Index (Weight/Height2); Data are expressed as mean (standard deviation) if numerical variables, or as the number of patients and their percentages (%), if categorical; * Fisher Exact Test ; * Missing follow up data n = 76.