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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.