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Table 5 Glycaemic load and glycaemic index: between treatment group comparison a

From: The effects of antenatal dietary and lifestyle advice for women who are overweight or obese on maternal diet and physical activity: the LIMIT randomised trial

Outcome Time point Lifestyle advice (n = 945)b Standard care (n = 928)b Adjusted treatment × time interactionP-valuec 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)
  1. 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.
  2. 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).
  3. cWhere the treatment × time interaction was not statistically significant, it was dropped from the model.