TABLE 2

Distribution of the Outcomes and Assessment of the Effects of the Intervention on These Outcomes at Mid- (T2) and Postintervention (T3)

Distribution of the OutcomesEffects of the InterventionEffects of the Intervention Accounting for Correlates
ControlIntervention
Mean (SD)Median (IQR)Mean (SD)Median (IQR)Mean Differencea (95% CI)PMean Differenceb (95% CI)P
Midintervention (mean child age 9 [1.1] mo)
 zBMI0.2 (1.0)0.2 (–0.5 to 0.8)0.2 (1.0)0.2 (–0.5 to 0.8)−0.01 (–0.13 to 0.11).89−0.01 (–0.14 to 0.11).83
 Fruit intake (g/d)101.0 (71.4)86.0 (46.7 to 141.4)107.2 (72.3)99.3 (55.2 to 139.2)7.80 (–6.26 to 21.86).287.02 (–5.46 to 19.49).27
 Vegetable intake (g/d)103.5 (73.7)79.9 (54.5 to 131.2)107.8 (77.9)94.2 (50.8 to 141.1)4.27 (–7.93 to 16.47).493.08 (–8.21 to 14.36).59
 Water intake (g/d)112.2 (89.7)92.5 (43.3 to 162.6)108.2 (87.0)84.2 (41.0 to 144.6)−3.72 (–18.52 to 11.07).62−4.37 (–18.57 to 9.83).55
 Noncore drink intake (g/d)6.6 (26.8)0.0 (0.0 to 0.0)2.1 (13.2)0.0 (0.0 to 0.0)−4.45 (–7.92 to −0.99).01−4.57 (–8.00 to −1.14).009
 Sweet snack intake (g/d)2.1 (5.8)0.0 (0.0 to 1.3)1.5 (3.7)0.0 (0.0 to 0.6)−0.82 (–1.77 to 0.13).09−0.97 (–1.91 to −0.04).04
 Savory snack intake (g/d)0.7 (2.2)0.0 (0.0 to 0.0)0.7 (2.3)0.0 (0.0 to 0.0)−0.05 (–0.41 to 0.31).79−0.09 (–0.44 to 0.27).64
 Television viewing (min/d)36.6 (50.7)19.3 (0.0 to 60.0)35.5 (68.3)10.0 (0.0 to 42.9)−1.09 (–10.46 to 8.45).82−1.64 (–10.70 to 7.43).72
Postintervention (mean child age 19.8 [2.2] mo)
 zBMI0.8 (1.0)0.8 (0.1 to 1.3)0.8 (0.9)0.9 (0.3 to 1.5)−0.01 (–0.16 to 0.13).86−0.02 (–0.18 to 0.14).82
 Fruit intake (g/d)152.9 (81.3)147.9 (87.7 to 210.1)161.2 (91.9)145.7 (99.2 to 212.6)10.99 (–6.09 to 28.06).2113.33 (–2.59 to 29.25).10
 Vegetable intake (g/d)80.8 (57.8)69.3 (37.9 to 105.7)85.3 (53.0)75.6 (48.6 to 106.9)4.53 (–4.38 to 13.43).326.62 (–2.51 to 15.76).16
 Water intake (g/d)338.7 (212.1)273.3 (193.3 to 433.3)362.9 (218.6)316.7 (200.0 to 500.0)24.17 (–9.85 to 58.20).1630.28 (–3.30 to 63.87).08
 Noncore drink intake (g/d)25.4 (67.5)0.0 (0.0 to 6.0)23.7 (58.8)0.0 (0.0 to 0.0)−2.21 (–13.71 to 9.30).71−5.56 (–17.48 to 6.36).36
 Sweet snack intake (g/d)14.7 (15.7)11.4 (1.1 to 21.3)11.0 (14.1)6.2 (0.0 to 15.3)−3.69 (–6.41 to −0.96).008−3.60 (–6.34 to −0.86).01
 Savoury snack intake (g/d)5.8 (10.4)1.0 (0.0 to 7.0)4.8 (7.9)1.8 (0.0 to 6.0)−1.01 (–2.82 to 0.80).28−1.02 (–2.82 to 0.79).27
 Television viewing (min/d)60.6 (66.9)30.0 (15.0 to 71.3)45.5 (48.9)30.0 (15.0 to 60.0)−15.97 (–25.97 to −5.96).002−17.12 (–26.45 to −7.79)<.001
 Physical activity (min/d)236.8 (38.8)237.6 (209.0 to 255.2)228.3 (42.3)224.1 (198.3 to 254.3)−2.94 (–11.44 to 5.55).450−2.03 (–9.75 to 5.70).61
  • Mean difference coefficients estimated from linear regression analysis. IQR, interquartile range; T2, mid intervention; T3, post intervention.

  • a Random effects linear regression models, estimated using maximum likelihood with bootstrapped standard errors, were fitted to compare continuous outcomes between the trial arms, taking account of clustering. The model that assessed the effect of the intervention on zBMI adjusted for baseline zBMI. The model that assessed the effect of the intervention on physical activity (20 month only) adjusted for accelerometer wear time because this differed significantly between groups.

  • b Random effects linear regression models, estimated using maximum likelihood with bootstrapped standard errors, were fitted to compare continuous outcomes between the trial arms, taking account of clustering. The zBMI model adjusted for baseline zBMI, mothers’ education level, and mothers’ prepregnancy BMI. The dietary intake models adjusted for mothers’ education level and child’s overall energy intake. The television-viewing model adjusted for mothers’ education level and child’s age. The physical activity model (20 month only) adjusted for accelerometer wear time, maternal education, and child’s age.