Table 1.
Characteristics of study participants, stratified by surgery type. Significance denoted with unadjusted p-value < 0.05 (bolded).
| Categorical Variables | RYGB | LSG | p-Value 1 |
|---|---|---|---|
| n (%) | n (%) | ||
| n | 14 | 8 | |
| Sex | |||
| male | 0 (0%) | 1 (13%) | 0.3636 |
| female | 14 (100%) | 7 (87%) | |
| Race | |||
| Asian/Pacific Islander | 0 (0%) | 0 (0%) | 1.000 |
| African American/Black | 0 (0%) | 0 (0%) | |
| White | 13 (93%) | 8 (100%) | |
| More than one race | 0 (0%) | 0 (0%) | |
| Did not wish to report | 1 (7%) | 0 (0%) | |
| Ethnicity | |||
| Hispanic | 13 (93%) | 8 (100%) | 1.000 |
| Non-Hispanic | 0 (0%) | 0 (0%) | |
| Did not wish to report | 1 (7%) | 0 (0%) | |
| Continuous Variables | RYGB | LSG | p-Value 2 |
| Mean ± SD (n) | Mean ± SD (n) | ||
| Age (years) | 47.4 ± 10.6 years (14) | 58.6 ± 9.10 years (8) | 0.018 |
| Pre-Surgery Body Mass Index (BMI) | 48.1 ± 8.4 m2/kg (14) | 42.5 ± 8.6 m2/kg (8) | 0.162 |
| Weight | |||
| Pre-Surgery Weight | 130 ± 20 kg (14) | 126 ± 28 kg (7) | 0.738 |
| Bariatric Surgery Weight | 127 ± 20 kg (14) | 120 ± 27 kg (8) | 0.540 |
| Post-Surgery Weight (0 days–1 month) | 120 ± 23 kg (9) | 117 ± 29 kg (6) | 0.859 |
| Post-Surgery Weight (1 month–4 months) | 106 ± 15 kg (9) | 104 ± 31 kg (6) | 0.865 |
| Post-Surgery Weight (4 months–1 year) | 97 ± 16 kg (11) | 99 ± 31 kg (7) | 0.886 |
| Percent Change of Weight | −25 ± 6% (14) | −20 ± 9% (8) | 0.193 |
| Timing of Weight Collection (days from surgery) | |||
| Pre-Surgery Weight | −52 ± 32 days (14) | −72 ± 44 days (7) | 0.319 |
| Post-Surgery Weight (0 days–1 month) | 22 ± 5 days (9) | 22 ± 7 days (6) | 0.942 |
| Post-Surgery Weight (1 month–4 months) | 108 ± 25 days (9) | 116 ± 13 days (6) | 0.505 |
| Post-Surgery Weight (4 months–1 year) | 256 ± 71 days (11) | 224 ± 71 days (7) | 0.360 |
| Percent Change of Weight | 250 ± 97 days (14) | 211 ± 76 days (8) | 0.310 |
| Timing of Stool Collection (days from surgery) | |||
| Pre-Stool Collection | −47 ± 35 days (14) | −67 ± 38 days (8) | 0.230 |
| Post-Stool Collection | 210 ± 51 days (14) | 148 ± 83 days (8) | 0.090 |
1 Represents Fisher’s exact test for categorical variables. 2 Represents unpaired t-test for continuous variables.