Excessive TV viewing and cardiovascular disease risk factors in adolescents. The AVENA cross-sectional study

BMC Public Health

Table 1 Baseline characteristics of the sample (n = 425)

	Adolescent boys (n = 214)	Adolescent girls (n = 211)	p
Age (yrs)	14.9 ± 1.2	14.8 ± 1.4	0.370
Weight (kg)	64.4 ± 13.3	56.3 ± 10.6	<0.001
Height (m)	1.7 ± 0.1	1.6 ± 0.1	<0.001
Body mass index (kg/m²)	22.1 ± 3.9	21.6 ± 3.5	0.177
Non-overweight/Overweight	154/60	162/39	0.020
Waist circumference (cm)	77.1 ± 9.4	71.1 ± 8.4	<0.001
Sexual maturation (I/II/III/IV/V)	1/10/28/86/89	0/5/18/110/78	<0.001
Triglycerides (mg/dl)^§	71.1 ± 31.8	65.1 ± 27.0	0.037
Total cholesterol (mg/dl)^§	155.8 ± 26.3	170.1 ± 25.4	<0.001
HDL-cholesterol (mg/dl)^§	51.4 ± 10.0	59.4 ± 11.8	<0.001
LDL-cholesterol (mg/dl)^§	90.2 ± 23.5	97.8 ± 22.7	0.001
Glucose (mg/dl)^§	95.4 ± 9.7	91.5 ± 8.4	<0.001
Apoliprotein-A1 (mg/dl)^§	115.5 ± 15.5	125.5 ± 17.5	<0.001
Apoliprotein-B100 (mg/dl)^§	65.9 ± 14.8	69.3 ± 13.4	0.013
Lipoprotein(a) (mg/dl)^§	30.8 ± 36.8	31.6 ± 38.9	0.683
Low TV viewing/High TV viewing^†	89/125	111/100	0.023

Values are mean ± SD. ^§Values were natural log-transformed, but not transformed values are presented in the table. ^† High TV viewing: >3 hrs/day. Statistical analyses were analysis of variance for continuous variables and the Chi-square test for categorical variables.

ISSN: 1471-2458