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Table 7 Self-reported physical activity of participants in nested randomised trial: 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

Walking group (n = 257)b

Information only (n = 269)b

Adjusted treatment × time interactionP-valuec

Adjusted treatment effect

P

95% CI

Commuting activityd

Trial entry

227.30 (281.27)

240.47 (243.97)

0.24

0.63

17.41 (-54.57 to 89.39)

28 weeks

218.05 (176.55)

200.32 (287.47)

36 weeks

292.52 (366.32)

185.01 (178.98)

4 months

248.44 (263.20)

390.00 (512.82)

Leisure activitye

Trial entry

1048.02 (1311.53)

877.42 (1146.34)

0.04

0.11

174.72 (-41.93 to 391.38)

28 weeks

1048.30 (1248.43)

911.11 (1212.73)

0.36

108.50 (-125.45 to 342.44)

36 weeks

796.16 (1011.25)

727.39 (810.12)

0.67

52.10 (-188.17 to 292.38)

4 months

1178.16 (1071.98)

1374.64 (1411.67)

0.08

-236.04 (-503.44 to 31.37)

Household activity

Trial entry

3437.45 (3353.79)

2961.20 (2924.20)

0.19

0.16

294.44 (-114.88 to 703.76)

28 weeks

3441.23 (3085.54)

2697.92 (2732.72)

36 weeks

3208.16 (3005.22)

2951.82 (3111.69)

4 months

4862.53 (4204.93)

4672.32 (3766.02)

Work-related activityd

Trial entry

4440.89 (2743.25)

4888.99 (3130.39)

0.19

0.26

-259.57 (-710.22 to 191.08)

28 weeks

4121.12 (2359.13)

4409.20 (2735.41)

36 weeks

3512.04 (1852.27)

4035.94 (2274.21)

4 months

3454.71 (2619.25)

3144.64 (2212.72)

Total activity

Trial entry

7524.07 (4657.16)

7311.45 (4318.89)

0.75

0.40

247.31 (-332.35 to 826.98)

28 weeks

7169.05 (3823.28)

6564.51 (3898.19)

36 weeks

5888.77 (3688.15)

5479.91 (4066.69)

4 months

6526.84 (4637.30)

6641.77 (4494.63)

  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 where the total hours of activity per week reported exceeded the number of hours in a week.
  3. cWhere the treatment × time interaction was not statistically significant, it was dropped from the model.
  4. dWhere women participated in these activities.
  5. eValues are mean ± SD and treatment effects are differences in means (with 95% confidence interval and P-value) by time point estimated from a linear mixed effects model including treatment, time and treatment × time, adjusted for centre, parity and BMI.