The Association between Adolescent’s Weight Perception and Health Behaviors: Analysis of National Health and Nutrition Examination Survey Data, 2011–2014

Table 3

Weight perception accuracy and health behaviors in adolescents aged 12–19 years, NHANES 2011–2014.

	Normal weight			Overweight			Obese
	Accurate	Inaccurate	value	Accurate	Inaccurate	value	Accurate	Inaccurate	value
Boys
12–19 years	(87%)	(13%)		(21%)	(79%)		(66%)	(34%)
Physical activity
Meet physical activity recommendation^$, (%)	448 (77.4)	77 (64.8)	0.244	29 (71.1)	112 (74.2)	0.403	97 (62.4)^a	62 (72.9)	0.102
Physical activity (minutes/day)	100.1 ± 4.8	107.0 ± 17.6	0.686	108.4 ± 22.5	108.2 ± 10.0	0.703	96.7 ± 14.7	98.0 ± 18.3	0.271
Sedentary behaviors
Sitting time (minutes/day)	468.1 ± 9.6	447.0 ± 19.2	0.839	430.8 ± 41.6	483.8 ± 18.9	0.502	535.6 ± 21.3^ab	497.8 ± 31.9	0.007
Screen time (hours/day)	3.5 ± 0.1	3.7 ± 0.3	0.893	4.5 ± 0.5	3.6 ± 0.2	0.309	4.4 ± 0.3^a	3.9 ± 0.3	0.137
Screen time ≤2 hours/day, (%)	210 (36.4)	38 (30.8)	0.705	14 (29.7)	62 (37.8)	0.84	49 (24.7)^a	29 (34.0)	0.036
12–15 years	(89%)	(11%)		(17%)	(83%)		(57%)	(43%)
Weight loss intention, (%)^#	46 (12.8)	7 (17.4)	0.494	19 (80.3)^c	36 (39.4)	0.046	77 (90.3)^a	39 (56.4)	0.004
Girls
12–19 years	(87%)	(13%)		(49%)	(51%)		(76%)	(24%)
Physical activity
Meet physical activity recommendation^$, (%)	300 (58.8)	42 (49.0)	0.276	39 (43.5)	49 (48.7)	0.185	78 (37.4)^a	21 (43.2)	0.251
Physical activity (minutes/day)	64.2 ± 3.5	63.3 ± 12.3	0.919	57.8 ± 12.8	68.6 ± 15.4	0.351	41.0 ± 4.1^a	61.7 ± 12.2	0.005
Sedentary behaviors
Sitting time (minutes/day)	507.9 ± 11.7	486.3 ± 15.4	0.192	463.5 ± 26.7	463.2 ± 23.7	0.329	533.3 ± 15.9^b	573.0 ± 22.8	0.227
Screen time (hours/day)	3.4 ± 0.1	3.3 ± 0.2	0.847	3.5 ± 0.2	3.3 ± 0.2	0.928	4.1 ± 0.2^ab	4.0 ± 0.5	0.716
Screen time ≤2 hours/day, (%)	249 (42.9)	43 (43.3)	0.585	29 (35.8)	38 (44.9)	0.208	57 (29.7)^a	26 (45.0)	0.263
12–15 years	(87%)	(13%)		(37%)	(63%)		(70%)	(30%)
Weight loss intention, (%)^#	71 (19.8)	22 (43.1)	0.015	28 (96.8)^c	40 (59.9)	0.002	91 (89.5)^a	33 (66.9)	0.046

Note. NHANES = National Health and Nutrition Examination Survey; MET = metabolic equivalent scores; sample weight to conduct all the analyses; data are presented as mean ± SE or otherwise specified; the other values for continuous variable were obtained by performing SURVEYREG, and values for category variables were obtained by performing SURVEYLOGISTIC to perform the adjusted analyses, adjusted for age, race, parental education level, and family income to poverty ratio; ^$accumulated ≥1680 MET-minutes/week for 12–17 years old, and accumulated ≥600 MET-minutes/week for 18–19 years old; ^#data were only available for participants aged 12–15 years; ^anormal differs from obese (); ^boverweight differs from obese (); ^cnormal differs from overweight ().