Table 1: Mean differences in BMI and BMI-SDS from baseline to the end of the 1-year program and to 3- and 5-year follow-up (mean (SD); ; baseline observation carried forward).

Time periodAverage change of BMI (kg/m2): mean (SD)Test statistics1Average change of BMI-SDS: mean (SD)Test statistics1

1-year program
(Baseline to end of program)
−1.75 (2.48)Mdn = −1.38
= −14.67, < 0.001
−0.35 (0.41)Mdn = −0.28
= −17.18, < 0.001
12th to 36th month follow-up
(End of the program to 3 years after baseline)
1.90 (2.94)Mdn = 1.63
= −13.80, < 0.001
0.15 (0.43)Mdn = 0.12
= −8.76, < 0.001
36th to 60th month follow-up
(3 years after baseline to 5 years after baseline)
0.35 (3.07)Mdn = 0.00
= −3.41, < 0.010
0.05 (0.46)Mdn = 0.00
= −2.29, < 0.050
Baseline to 36th month follow-up
(Baseline to 3 years after baseline)
0.16 (3.22)Mdn = 0.00
= −0.88, n.s.
−0.20 (0.49)Mdn = 0.00
= −9.09, < 0.001
Baseline to 60th month follow-up
(Baseline to 5 years after baseline)
0.51 (3.11)Mdn = 0.00
,
−0.15 (0.51)Mdn = 0.00
= −6.74, < 0.001

Test statistics calculated by Wilcoxon-test.
SD: standard deviation.
Mdn: median.