Table 1.
Subject characteristics by sex.
| Total (N=60) |
Female (n=42) |
Male (n=18) |
p-value* | |
|---|---|---|---|---|
| Age at Surgery (years), x̄ (SD) | 17.3 (1.72) | 17.2 (1.67) | 17.4 (1.89) | 0.68 |
| Age at Measurement (years), x̄ (SD) | 20.8 (2.10) | 20.8 (2.04) | 20.7 (2.28) | 0.84 |
| Race | 0.19 | |||
| White | 71.7% (43) | 66.7% (28) | 83.3% (15) | |
| Non-white | 28.3% (17) | 33.3% (14) | 16.7% (3) | |
| Surgical Procedure, % (n) | 0.30 | |||
| Roux-en-Y Gastric Bypass | 66.7% (40) | 71.4% (30) | 55.6% (10) | |
| Gastric Band | 8.3% (5) | 9.5% (4) | 5.6% (1) | |
| Sleeve gastrectomy | 25.0% (15) | 19.1% (8) | 38.9% (7) | |
| Years since surgery, x̄ (SD) | 3.5 (1.42) | 3.6 (1.36) | 3.3 (1.58) | 0.42 |
| Baseline Body Mass Indexa, median (IQR) | 50.9 (45.4,58.4) | 50.1 (45.2,57.0) | 53.9 (48.7,60.8) | 0.18 |
| Visit location, % (n) | 0.71 | |||
| Clinic | 51 (85.0%) | 35 (83.3%) | 16 (88.9%) | |
| Home | 9 (15.0%) | 7 (16.7%) | 2 (11.1%) | |
| Body Mass Indexa at measurement, median (IQR) | 36.6 (30.7,43.9) | 36.6 (30.6,44.0) | 37.3 (33.1,43.8) | 0.87 |
| Percent Weight changeb, x̄ (SD) | −26.9 (16.04) | −26.3% (16.01) | −28.3% (16.49) | 0.67 |
| Measured Weight (kg), median (IQR) | 103.8 (88.0,127.4) | 98.5 (86.4,118.7) | 112.6 (100.8,143.9) | 0.03 |
| Self-reported Weight (kg), median (IQR) | 100.9 (86.1,124.1) | 96.6 (85.0,113.6) | 115.2 (100.0,147.7) | 0.01 |
| Difference in weightc, median (IQR) | −0.3 (−2.7,1.6) | −0.5 (−2.9,0.9) | 1.1 (−2.5,2.9) | 0.12 |
| Days between Report & Measured Weight, x̄ (SD) | 15.4 (8.85) | 15.5 (8.27) | 15.1 (10.33) | 0.85 |
*
Females compared to males.
a
Using measured weight.
b
Percent weight change from baseline measurement.
c
Difference = (Self-report minus Measured).
SD = Standard Deviation.
IQR = Interquartile range.