Sleep duration of underserved minority children in a cross-sectional study

BMC Public Health

Table 1 Demographic and physical characteristics of study subjects ^a

Variables	All children	Hispanics	Black
N	483	333	150
Age, y	10.3 ± 0.99^b	10.3 ± 0.99	10.4 ± 0.99
Gender (M/F)	247/236	175/158	72/78
Weight, kg	47.6 ± 16.5	48.5 ± 15.2	45.7 ± 19.0
Height, cm	141.9 ± 9.2	141.0 ± 9.1	144.0 ± 9.2*
BMI, kg/m²	23.3 ± 6.1	24.0 ± 5.4	21.6 ± 7.1**
BMI z-score	1.32 ± 1.03	1.54 ± 0.87	0.82 ± 1.18**
Weight status, N (%)
Normal	164 (34.0)	77 (23.1)	87 (58)**
Overweight	84 (17.4)	66 (19.8)	18 (12.0)**
Obese	235 (48.7)	190 (57.1)	45 (30.0)**
Low SES (%)^c	93.2	95.5	88.4*

^a Hispanic and black groups were compared using independent-samples t-test for continuous variables and Pearson Chi-Square for categorical variables. Significant differences between Hispanic and black are indicated as follows: * for P < 0.01 and ** for P < 0.001.
^b Mean ± SD.
^c SES = socio economic status. Based on qualification for free/reduced cost meals at school and Medicaid.

ISSN: 1471-2458