Table 2. Pre-operative and post-operative characteristics of participants.
Data presented as mean ± SEM. Pre-operative values between BA and WA compared using student T test (Column A vs. B). Two-way Anova was used to compare variables of race and time.
| Measurement | BA | WA | STATISTIC | BA | WA | STATISTIC | STATISTIC |
|---|---|---|---|---|---|---|---|
| Pre-op (A) | Pre-op (B) | Student’s T | 6 wks post-op (C) | 6 wks post-op (D) | Student’s T | Two-way ANOVA | |
| Mean ± SEM | Mean ± SEM | A vs B | Mean ± SEM | Mean ± SEM | C vs D | time = AB vs CD; race = AC vs. BD | |
| n = 24 | n = 34 | n = 24 | n = 34 | ||||
| Body weight (kg) | 127.6 ± 4.09 | 123.8 ± 4.02 | p = 0.5206 | 113.4 ± 3.73 | 108.4 ± 3.52 | p = 0.3452 | p(time)<0.0001; p(race) = 0.4292 |
| Body Mass Index (BMI) | 47.5 ± 1.27 | 44.7 ± 1.03 | p = 0.0934 | 42.9 ± 1.5 | 39.5 ± 1.09 | p = 0.0349 | p(time)<0.0001; p(race) = 0.0659 |
| Waist Circumference (cm) | 124.5 ± 2.87 | 128 ± 2.73 | p = 0.4047 | 115.2 ± 2.83 | 123.7 ± 2.52 | p = 0.533 | p(time)<0.0001; p(race) = 0.1826 |
| Hip Circumference (cm) | 134.8 ± 2.78 | 128.2 ± 1.99 | p = 0.0497 | 112.9 ± 2.32 | 122.5 ± 1.87 | p = 0.6951 | p(time)<0.0001; p(race) = 0.8606 |
| Systolic BP (mm Hg) | 143.3 ± 4.31 | 138.6 ± 1.91 | p = 0.2744 | 134.1 ± 2.65 | 127.7 ± 3.03 | p = 0.1396 | p(time)<0.0001; p(race) = 0.1230 |
| Diastolic BP (mm Hg) | 85.4 ± 1.97 | 81.6 ± 2.06 | p = 0.2051 | 84.8 ± 1.55 | 77.4 ± 2.69 | p = 0.0374 | p(time) = 0.1850; p(race)<0.05 |
| Pulse (bpm) | 83.6 ± 3.42 | 79.1 ± 2.05 | p = 0.2386 | 80.0 ± 2.81 | 74.4 ± 1.99 | p = 0.0969 | p(time)<0.05; p(race) = 0.0661 |
| Temperature (◦ C) | 97.7 ± 0.17 | 97.5 ± 0.14 | p = 0.3567 | 97.6 ± 0.13 | 96.8 ± 0.94 | p = 0.4558 | p(time) = 0.5813; p(race) = 0.278 |
| ALT (IU/L) | 18 ± 1.69 | 36.5 ± 3.82 | p = 0.0005 | N/A | N/A | N/A | |
| AST (IU/L) | 17.7 ± 1.15 | 29.6 ± 3.05 | p = 0.0033 | N/A | N/A | N/A | |
| Billirubin (mg/dL) | 0.4 ± 0.06 | 0.5 ± 0.04 | p = 0.3286 | N/A | N/A | N/A | |
| Creatinine (mg/dL) | 0.8 ± 0.03 | 0.8 ± 0.02 | p = 0.3576 | N/A | N/A | N/A | |
| Glucose (mg/dL) | 104.9 ± 5.11 | 113.6 ± 5.88 | p = 0.2996 | N/A | N/A | N/A | |
| WBC (x10 /ul) | 8 ± 0.54 | 7.3 ± 0.3 | p = 0.2053 | N/A | N/A | N/A | |
| Hematocrit % | 38.7 ± 0.77 | 41.9 ± 0.63 | p = 0.0026 | N/A | N/A | N/A | |
| Platelets (x10 /ul) | 312.5 ± 16.28 | 266 ± 12.13 | p = 0.0234 | N/A | N/A | N/A |
Boldface designates statistical significance 0.05. BP (blood pressure); ALT (alanine transaminase); AST (aspartate aminotransferase); WBC (white blood cells).