Table 4.

Change in mean BMI%₉₅ and BMI z-score for the entire study sample

Measure	Baseline Mean ± SD	Follow-up Mean ± SD	Difference (Δ) Mean (95% CI)	p value*
BMI%95	133.6 ± 22.7	130.6 ± 24.2	−3.0 (− 5.0, − 1.1)	p < 0.003
BMI z-score	2.5 ± 0.6	2.4 ± 0.5	− 0.15 (− 0.2, − 0.1)	p < 0.0001

* p-values refer to paired-sample t-tests