Three- and Five-Year Follow-Up of a Combined Inpatient-Outpatient Treatment of Obese Children and Adolescents

Table 3

Average changes of BMI-SDS by age and sex.

Average changes during…	10-11 years
	Girls (𝑁=77)			Boys (𝑁=65)
	Mean difference of BMI-SDS: mean (SD)	Test statistics^1	Successful weight reduction^2 in 10-11-year-old girls (in %)	Mean difference of BMI-SDS: mean (SD)	Test statistics^1	Successful weight reduction^2 in 10-11-year-old boys (in %)
1-year program; (Baseline to end of program)	−0.27 (0.41)	Mdn = −0.26; 𝑧 = −5.06,; 𝑃<0.001	54.4%	−0.28 (0.32)	Mdn = −0.26; 𝑧 = −5.59,; 𝑃<0.001	53.8%
Baseline to 36-month follow-up (3YFU)	−0.08 (0.49)	Mdn = 0; 𝑧 = −1.30, n.s.	27.8%	−0.11 (0.33)	Mdn = 0; 𝑧 = −2.33,; 𝑃 < 0.050	23.1%
Baseline to 60-month follow-up (5YFU)	−0.06 (0.52)	Mdn = 0; 𝑧 = −0.68, n.s.	17.7%	−0.03 (0.34)	Mdn = 0; 𝑧 = −0.40, n.s.	12.3%
Average changes during…	12-13 years
	Girls (𝑁=160)			Boys (𝑁=135)
	Mean difference of BMI-SDS: mean (SD)	Test statistics^1	Successful weight reduction^2 in 12-13-year-old girls (in %)	Mean difference of BMI-SDS: mean (SD)	Test statistics^1	Successful weight reduction^2 in 12-13-year-old boys (in %)
1-year program; (Baseline to end of program)	−0.41 (0.44)	Mdn = −0.33; 𝑧 = −9.19,; 𝑃 < 0.001	57.2%	−0.35 (0.39)	Mdn = −0.29; 𝑧 = −8.41,; 𝑃 < 0.001	59.2%
Baseline to 36-month follow-up (3YFU)	−0.31 (0.51)	Mdn = −0.04; 𝑧 = −6.98,; 𝑃 < 0.001	41.0%	−−0.16 (0.48)	Mdn = 0; 𝑧 = −3.16,; 𝑃 < 0.010	31.9%
Baseline to 60-month follow-up (5YFU)	−0.25 (0.59)	Mdn = 0; 𝑧 = −5.13,; 𝑃 < 0.001	25.5%	−0.09 (0.51)	Mdn = 0; 𝑧 = −1.58, n.s.	17.7%
Average changes during…	14-15 years
	Girls (𝑁=95)			Boys (𝑁=66)
	Mean difference of BMI-SDS: mean (SD)	Test statistics^1	Successful weight reduction^2 in 14-15-year-old girls (in %)	Mean difference of BMI-SDS: mean (SD)	Test statistics^1	Successful weight reduction^2 in 14-15-year-old boys (in %)
1-year program; (Baseline to end of program)	−0.36 (0.42)	Mdn = −0.27; 𝑧 = −7.01,; 𝑃 < 0.001	55.2%	−0.38 (0.42)	Mdn = −0.29; 𝑧 = −6.00,; 𝑃 < 0.001	60.6%
Baseline to 36-month follow-up (3YFU)	−0.28 (0.53)	Mdn = 0; 𝑧 = −4.70,; 𝑃 < 0.001	39.0%	−0.13 (0.47)	Mdn = 0; 𝑧 = −2.06,; 𝑃 < 0.050	30.3%
Baseline to 60-month follow-up (5YFU)	−0.22 (0.41)	Mdn = 0; 𝑧 = −4.70,; 𝑃 < 0.001	27.5%	−0.17 (0.52)	Mdn = 0; 𝑧 = −52.72,; 𝑃 < 0.010	19.7%

1Test statistics calculated by Wilcoxon-test.
²“Successful weight reduction” means a BMI-SDS reduction > 0.2 BMI-SDS.
SD: standard deviation.
Mdn: median.
3YFU: 3-year follow-up (36 month/3 years after baseline).
5YFU: 5-year follow-up (60 month/5 years after baseline).