Tab. I.

Distribution of the sample according to the weight status of the participants, stratified by age-category and gender.

Age	N (%)	Sex	N (%)		Weight status		χ²	Cramer’s V
				Underweight	Normal weight	Overweight + obese	P^C
11	836 (30.3)	Boys	427 (51.1)^A	63 (14.8)^B	234 (54.8)^B	130 (30.4)^B	<.001	0.202
		Girls	409 (48.9)^A	78 (19.1)^B	275 (67.2)^B	56 (13.7)^B
		Total	836(100)^A	141 (16.9)^B	509 (60.9)^B	1868 (22.2)^B
13	936 (33.9)	Boys	467 (49.9)^A	63 (13.5)^B	281 (60.2)^B	123 (26.3)^B	<.001	0.171
		Girls	469 (50.1)^A	76 (16.2)^B	333 (71.0)^B	60 (12.8)^B
		Total	936(100)^A	139 (14.9)^B	614 (65.6)^B	83 (19.6)^B
15	988 (35.8)	Boys	515 (52.1)^A	55 (10.7)^B	355 (68.9)^B	105 (20.4)^B	<.001	0.169
		Girls	473 (47.9)^A	74 (15.6)^B	357 (75.5)^B	42 (8.9)^B
		Total	988(100)^A	129 (13.1)^B	712 (72.1)^B	147 (14.9)^B
Total	2760(100)	Boys	1409 (51.1)^A	181 (12.8)^B	870 (61.7)^B	358 (25.4)^B	<.001	0.177
Total	2760(100)	Girls	1351 (48.9)^A	228 (16.9)^B	965 (71.4)^B	158 (11.7)^B	<.001	0.177
		Total	2760(100)^A	409 (14.8)^B	1835 (66.5)^B	516 (18.7)^B
^A Percentage by Colum; ^B Percentage by Row; ^C Comparison between boys and girls.
Table I shows the results of all the participants, as well as boys and girls separately, by age category, for the variables under analysis, i.e., Self-Rated Health (SRH) and Life Satisfaction (LS), based on the BMI category to which they belong.