Table 2.
Between group changes over the 6 month intervention period
| Outcome variable | Adjusted post intervention mean (sd) | Test statistic F (df) |
P value | |
|---|---|---|---|---|
| Treatment group (n=33) |
Control group (n=30) |
|||
| Anthropometric outcomes |
Wilks’s Δ=0.68
3.53 (6, 44) |
0.006 ** | ||
| BMI | 30.15 (1.17) | 30.61 (1.18) | 1.95 (1, 49) | 0.17 |
| Weight (kg)+ | 66.37 (3.03) | 68.87 (3.06) | 10.46 (1, 49) | 0.002** |
| Height (cm) | 149.92 (1.99) | 151.37 (2.01) | 6.75 (1, 49) | 0.01* |
| Waist | 89.58 (3.28) | 90.48 (3.31) | 0.97 (1, 49) | 0.33 |
| FM index | 13.14 (1.12) | 13.18 (1.13) | 0.02 (1, 49) | 0.90 |
| FFM index | 17.08 (0.77) | 17.27 (0.78) | 0.77 (1, 49) | 0.38 |
|
Anthropometric outcomes
(excl outlier) |
Wilks’s Δ=0.65
3.84 (6, 43) |
0.004 ** | ||
| BMI | 30.11 (0.97) | 30.74 (0.98) | 5.14 (1,48) | 0.03* |
| Weight (kg) + | 66.37 (2.70) | 69.34 (2.73) | 17.51 (1,48) | <0.001** |
| Height (cm) | 150.01 (2.00) | 151.45 (2.02) | 6.41 (1,48) | 0.02* |
| Waist | 89.47 (3.24) | 90.54 (3.28) | 1.35 (1,48) | 0.25 |
| FM index | 13.11 (1.00) | 13.27 (1.01) | 0.35 (1,48) | 0.56 |
| FFM index | 17.09 (0.76) | 17.32 (0.76) | 1.20 (1,48) | 0.28 |
| Anthropometric outcomes (SDS) |
Wilks’s Δ=0.86
1.96 (4, 48) |
0.12 | ||
| BMI SDS+ | 3.11 (0.17) | 3.09 (0.17) | - | - |
| Weight SDS | 2.94 (0.15) | 3.03 (0.16) | - | - |
| Height SDS | 1.23 (0.26) | 1.37 (0.26) | - | - |
| Waist SDS | 3.30 (0.19) | 3.30 (0.19) | - | - |
| Cardiovascular outcomes |
Wilks’s Δ=1.00
0.08 (2,51) |
0.06 | ||
| Systolic BP SDS | 0.16 (0.63) | 0.15 (0.63) | ||
| Diastolic BP SDS | 0.84 (0.82) | 0.77 (0.83) | ||
| Psychosocial outcomes |
Wilks’s Δ=0.82
0.78 (6, 21) |
0.60 | ||
| SDQ total score37;b | 13.30 (3.05) | 12.34 (3.09) | - | - |
| PedsQL total score (parent reported)38;a | 67.60 (10.21) | 68.27 (10.33) | - | - |
| PedsQL total score (child reported)38;a | 70.08 (11.98) | 74.35 (12.12) | - | - |
| CDI t-score36;b | 49.24 (6.91) | 48.13 (6.97) | - | - |
| Harter global score35;a | 2.80 (0.51) | 2.85 (0.51) | - | - |
| CHEAT dieting scale39-40;b | 8.28 (5.16) | 7.60 (5.20) | - | - |
| NP data | Post intervention median (IQR) | U | P value | |
| CHEAT bulimia/ food preoccupation scale39-40;b |
0.00 (2.00) | 0.00 (3.00) | 517.00 | 0.14 |
| CHEAT oral control scale39-40;b | 1.00 (3.00) | 1.50 (3.25) | 457.50 | 0.70 |
p<0.05,
p<0.01;
ITT analyses conducted using baseline values carried forward; post intervention mean values adjusted for age (in months) and baseline levels; main analyses were MANCOVA tests, sub analyses only carried out where significant differences seen at MANCOVA level. Numbers if data missing, for treatment and control group respectively, are: anthropometric, n=31 and n=27; CV, n=29 and n=28; psychosocial, n=20 and n=15;
Reported means are anti-logs of the mean of the logged data, standard deviations of the original data are given;
Increased score indicates an improvement;
Decreased score indicates an improvement;
Abbreviations are BMI=body mass index; FM=fat mass; FFM=fat free mass; BP=blood pressure; SDS=standard deviation score; SDQ=Strengths and Difficulties questionnaire; PedsQL=Pediatric Quality of Life Inventory; CDI=Children’s Depression Inventory; CHEAT=Children’s Eating Attitudes Test; NP=non parametric; IQR= interquartile range