Table 2.

Characteristics by group of children in Study 2 sample

		OV (n=114)		OB (n=124)
Age at baseline, y		9.9	0.6	9.9	0.6
Age at 1-yr follow-up, y		10.9	0.6	10.9	0.6
Sex, female participants		53	47%	58	47%
Race a	White	61	55%	58	50%
	Black	12	11%	18	15%
	Asian	5	4%	2	2%
	Native American	3	3%
	Mixed (≥ 2 races)	18	16%	24	21%
	Other races	12	11%	14	12%
Ethnicity a	Hispanic	41	36%	52	42%
Socioeconomic status b	up to $49,999	44	40%	53	50%
	$50,000 through $99,999	22	20%	39	37%
	$100,000 or more	44	40%	14	13%
Pubertal development scale c	pre-puberty	15	15%	29	26%
	early puberty	42	41%	32	29%
	mid puberty	40	40%	44	40%
	late & post-puberty	4	4%	5	5%
BMI z-score		1.37	0.17	2.04	0.26
Waist/Height ratio		0.51	0.04	0.58	0.05
BMI p95 at baseline, %				14.9	12.6
Change in BMI z-score		0.01	0.27	0.03	0.15
Change in Waist/Height ratio		0	0	0.01	0
Body weight classification at 1-yr follow-up d	Normal weight	11	10%
	Overweight	83	73%	6	5%
	With obesity	20	17%	118	95%
BMI p95 at 1-yr follow-up e , %				15.7	13.0
T2 signal ratio	MBH/Amygdala	1.13	0.09	1.13	0.10
	Putamen/Amygdala	0.97	0.05	0.97	0.05
	MBH/Putamen	1.16	0.09	1.17	0.10

Data are reported as mean and SD or n and %. Change in BMI z-score and Change in waist/height ratio calculated by 1-yr follow-up minus baseline. Abbreviations: BMI p95, percentage of the 95th percentile; MBH, mediobasal hypothalamus; OV, overweight; OB, with obesity.

^aMissing data: OV (race n=3, ethnicity n=1); OB (race n=8, ethnicity n=1).

^bMissing data: OV (n=13); OB (n=14).

^cMissing data: OV (n=4); OB (n=18).

^dDefined by BMI-for age and sex-percentile by CDC (14);

^eParticipants with obesity at 1-yr follow up (n=138).