Table 2.
Median, standard deviation and range of SCFA values (mM) measured at the 4 times for both groups of patients.
| Median ± SD Range (mM) | Acetate | Propionate | Butyrate | Isobutyrate | Valerate | Isovalerate | Caproate |
|---|---|---|---|---|---|---|---|
| SG* | e | e | a | b | |||
| Basal | 83.1 ± 28.8 43.6–132.4 |
29.9 ± 10.5 6.9–44.2 |
29.9 ± 10.5. 6.9–44.2 |
2.3 ± 1.1 0.5–4.7 |
3.8 ± 2.3 0.7–10.3 |
2.8 ± 2.1 0.7–8.3 |
0.5 ± 0.9 0.08–3.4 |
| Diet | 92.1 ± 37.8 37.9–178.6 |
31.6 ± 17.9 8.3–82.8 |
31.6 ± 17.9 8.3–82.8 |
3.1 ± 1.0 0.7–4.5 |
4.0 ± 2.2 0.8–8.6 |
4.3 ± 1.5 1.4–6.2 |
0.5 ± 0.4 0.04–1.5 |
| 1 month | 61.8 ± 42.2 10.4–168.5 |
25.0 ± 30.1 2.6–111.9 |
25.0 ± 30.1 2.6–111.9 |
2.5 ± 1.6 0.4–6.5 |
3.0 ± 2.6 0.4–10.4 |
3.9 ± 2.5 0.6–9.2 |
0.1 ± 0.3 0.0–0.8 |
| 3 months | 62.6 ± 24.9 19.8–123.9 |
25.3 ± 9.6 3.9–40.7 |
25.3 ± 9.6 3.9–40.7 |
2.9 ± 1.3 1.0–5.7 |
3.6 ± 1.4 0.8–5.6 |
3.9 ± 2.3 1.5–8.6 |
0.3 ± 0.5 0.06–1.7 |
| RYGB* | b,c,e | c | c,e | ||||
| Basal | 69.1 ± 31.7 19.7–126.1 |
24.8 ± 12.3 9.7–52.3 |
17.2 ± 15.5 0.6–58.3 |
2.1 ± 1.0 0.2–4.3 |
3.2 ± 2.0 0.0–9.3 |
2.9 ± 1.5 0.9–6.8 |
0.7 ± 0.7 0.0–3.3 |
| Diet | 69.9 ± 33.0 22.8–158.2 |
23.5 ± 17.2 3.8–73.4 |
18.3 ± 14.8 0.0–66.7 |
2.1 ± 1.5 0.9–6.7 |
3.4 ± 2.8 0.4–14.2 |
2.8 ± 2.3 1.0–10.6 |
0.7 ± 0.6 0.0–2.4 |
| 1 month | 53.6 ± 25.1 14.2–114.9 |
21.7 ± 13.1 3.1–51.2 |
10.5 ± 10.2 0.0–35.2 |
2.4 ± 1.1 0.5–5.7 |
3.3 ± 2.4 0.0–11.7 |
3.6 ± 1.7 1.6–9.0 |
0.5 ± 0.4 0.0–1.6 |
| 3 months | 52.9 ± 22.9 16.0–91.1 |
26.5 ± 15.8 3.6–55.7 |
16.1 ± 14.9 0.9–56.4 |
3.0 ± 1.5 0.9–8.7 |
2.9 ± 2.1 0.6–7.8 |
4.7 ± 2.8 1.4–15.7 |
0.4 ± 0.6 0.0–3.1 |
Notes: *a statistically significant difference determined by Wilcoxon test between baseline and diet; b: baseline and 1 month; c: baseline and 3 months; d: diet and 1 month; and e: diet and 3 months. Only values of p ≤ 0.05 were considered.