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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.