Table 3.

Overall association between youth weight status and fitness and stratified by sample characteristics ^a

	Underweight		Healthy weight		Overweight		Class I obesity		Class II obesity		Class III obesity
	β	95% CI	β	95% CI	β	95% CI	β	95% CI	β	95% CI	β	95% CI
Overall	−0.04	− 0.05 to − 0.04	Reference		−0.28	− 0.29 to − 0.28	−0.60	− 0.60 to − 0.60	−0.94	− 0.94 to − 0.93	− 1.28	− 1.28 to − 1.27
Sex
Boys	−0.09	− 0.10 to − 0.08	Reference		−0.30	− 0.30 to − 0.29	−0.65	− 0.65 to − 0.64	− 1.01	−1.01 to − 1.00	−1.38	− 1.39 to − 1.37
Girls	−0.01	0.00 to 0.01	Reference		−0.27	−0.27 to − 0.26	−0.54	− 0.55 to − 0.54	−0.85	− 0.85 to − 0.84	−1.15	− 1.16 to − 1.14
Race/ethnicity
Non-Hispanic White	−0.04	− 0.06 to − 0.03	Reference		−0.36	− 0.36 to − 0.35	−0.72	− 0.73 to − 0.71	−1.10	− 1.11 to − 1.09	−1.45	− 1.48 to − 1.43
Non-Hispanic Black	−0.08	− 0.09 to − 0.07	Reference		−0.23	− 0.24 to − 0.23	−0.55	− 0.56 to − 0.55	−0.89	− 0.90 to − 0.88	−1.23	− 1.24 to − 1.22
Hispanic	−0.04	− 0.05 to − 0.03	Reference		−0.27	− 0.27 to − 0.26	−0.58	− 0.59 to − 0.58	−0.92	− 0.92 to − 0.91	−1.26	− 1.27 to − 1.25
Asian	−0.03	− 0.04 to − 0.02	Reference		−0.30	− 0.31 to − 0.29	−0.59	− 0.60 to − 0.59	−0.91	− 0.93 to − 0.90	−1.19	− 1.22 to − 1.15
Other	0.01	−0.03 to 0.05	Reference		−0.32	− 0.34 to − 0.29	−0.64	− 0.67 to − 0.61	−0.95	−1.00 to − 0.90	−1.35	− 1.43 to − 1.26
Grade level
4th–8th	− 0.01	−0.02 to 0.00	Reference		−0.30	− 0.30 to − 0.30	−0.61	− 0.61 to − 0.61	−0.94	− 0.95 to − 0.94	−1.28	− 1.29 to − 1.27
9th–12th	−0.11	− 0.12 to − 0.10	Reference		−0.25	− 0.26 to − 0.25	−0.58	− 0.59 to − 0.58	−0.93	− 0.93 to − 0.92	−1.26	− 1.27 to − 1.25
Birth country
Foreign born	− 0.04	−0.05 to − 0.03	Reference		−0.29	− 0.29 to − 0.28	−0.60	− 0.61 to − 0.60	−0.94	− 0.94 to − 0.93	− 1.28	− 1.29 to − 1.27
US born	−0.06	− 0.07 to − 0.05	Reference		−0.26	− 0.27 to − 0.25	−0.57	− 0.58 to − 0.56	−0.90	− 0.92 to − 0.89	−1.20	− 1.22 to − 1.17
Free/reduced lunch
Eligible	−0.05	− 0.05 to − 0.04	Reference		−0.27	− 0.27 to − 0.27	−0.58	− 0.58 to − 0.58	−0.92	− 0.92 to − 0.91	−1.25	− 1.26 to − 1.24
Not Eligible	−0.05	− 0.05 to − 0.04	Reference		−0.31	− 0.32 to − 0.31	−0.65	− 0.66 to − 0.65	−0.99	−1.00 to − 0.98	−1.34	− 1.36 to − 1.33
English learner
Yes	−0.04	− 0.06 to − 0.02	Reference		−0.26	− 0.27 to − 0.25	−0.54	− 0.55 to − 0.53	−0.86	− 0.87 to − 0.84	−1.18	− 1.21 to − 1.15
No	−0.04	− 0.05 to − 0.04	Reference		−0.28	− 0.29 to − 0.28	−0.60	− 0.61 to − 0.60	−0.94	− 0.95 to − 0.94	− 1.28	− 1.29 to − 1.27

Abbreviations: CI Confidence interval, US United States

^aAll models included BMI category, sex, grade, race/ethnicity, free/reduce price meal status, country of birth, English language learn status, and time unless stratified