Table 5.
Glycaemic load and glycaemic index: between treatment group comparison a
| Outcome | Time point | Lifestyle advice (n = 945) b | Standard care (n = 928) b | Adjusted treatment × time interaction P -value c | Adjusted treatment effect | |
|---|---|---|---|---|---|---|
| P | 95% CI | |||||
| Glycaemic load | Trial entry | 129.46 (47.84) | 124.92 (45.07) | 0.45 | 0.15 | 2.62 (−0.94 to 6.18) |
| 28 weeks | 130.10 (44.55) | 129.86 (50.67) | ||||
| 36 weeks | 126.96 (44.90) | 127.12 (48.60) | ||||
| 4 months | 123.56 (47.92) | 121.86 (47.71) | ||||
| Glycaemic index | Trial entry | 50.57 (3.65) | 50.51 (3.59) | 0.17 | 0.10 | −0.22 (−0.48 to 0.04) |
| 28 weeks | 50.19 (3.36) | 50.48 (3.45) | ||||
| 36 weeks | 49.90 (3.47) | 50.32 (3.65) | ||||
| 4 months | 49.55 (3.92) | 49.71 (4.17) | ||||
aValues are mean ± SD and treatment effects are differences in means (with 95% confidence interval and P-value) across all time points estimated from a linear mixed effects model including treatment and time, adjusted for centre, parity and BMI.
bIncludes women who had a live birth, and who answered one or more questionnaires; excludes questionnaires with >25% missing responses, or where there was an unrealistic energy intake reported (<4,500 or >20,000 kJ).
cWhere the treatment × time interaction was not statistically significant, it was dropped from the model.