Table 2.
Baseline, week 4 and week 10 measures for dietary variables for the standard diet (StdD) and HPHFib groups.
| Baseline Mean (SD) | Week 4 Mean (SD) | Week 10 Mean (SD) | Within Treatment p-Value 1 | Overall Effect (95% CI) 2 | p-Value for Overall Effect | |
|---|---|---|---|---|---|---|
| Energy (kJ) | ||||||
| StdD | 8660 (2447) | 7252 (1723) | 7418 (1845) | 0.0081 | ||
| HPHFib | 8332 (2414) | 7549 (1473) | 7155 (1218) | 0.0064 | 193 (−408, 794) | 0.386 |
| Protein (% TE) | ||||||
| StdD | 18 (3) | 21 (6) | 19 (4) | 0.6986 | ||
| HPHFib | 18 (4) | 25 (4) | 24 (5) | <0.0001 | 5.0 (3.2, 6.8) | < 0.0001 |
| Fat (% TE) | ||||||
| StdD | 32 (7) | 28 (5) | 30 (6) | 0.4272 | ||
| HPHFib | 31 (6) | 25 (6) | 25 (5) | 0.0002 | −4.5 (−6.8, −2.3) | <0.0001 |
| Saturated fat (% TE) | ||||||
| StdD | 13 (4) | 11 (3) | 11 (3) | 0.033 | ||
| HPHFib | 12 (3) | 8 (3) | 8 (3) | <0.0001 | −3.1 (−4.2, −2.0) | <0.0001 |
| Available carbohydrate (% TE) | ||||||
| StdD | 45 (8) | 47 (8) | 46 (6) | 0.8512 | ||
| HPHFib | 46 (6) | 45 (5) | 45 (5) | 0.8963 | −1.7 (−4.3, 1.0) | 0.211 |
| Dietary fibre (g/day) | ||||||
| StdD | 24 (7) | 24 (8) | 22 (7) | 0.2023 | ||
| HPHFib | 24 (6) | 33 (9) | 30 (7) | 0.0004 | 9.6 (6.0, 13.1) | <0.0001 |
| Soluble fibre (g/day) | ||||||
| StdD | 11 (3) | 10 (3) | 10 (4) | 0.2454 | ||
| HPHFib | 11 (4) | 14 (4) | 13 (3) | 0.0874 | 3.6 (2.0, 5.1) | <0.0001 |
| Insoluble fibre (g/day) | ||||||
| StdD | 13 (4) | 13 (5) | 12 (5) | 0.2838 | ||
| HPHFib | 12 (3) | 18 (5) | 16 (4) | 0.0006 | 5.0 (2.9, 7.0) | 0.0001 |
1 p-value for difference between week 0 and week 10. 2 As the time x group interaction effect was not significant, a cross-sectional time-series regression model (xtreg) was used to obtain the estimate from week 4 and week 10 measures. % TE = percentage of total daily energy intake.