Table 1 Description of sociodemographic and anthropometric variables of children by sex: the 2004 Pelotas Birth Cohort Study
From: Body shape and size in 6-year old children: assessment by three-dimensional photonic scanning
Categorical variables | Male, N (%) | Female, N (%) | P-valuea |
|---|---|---|---|
SEP quintiles | 0.427 | ||
First (upper) | 388 (22.6) | 372 (22.9) | |
Second | 351 (20.4) | 367 (22.7) | |
Third | 383 (22.3) | 362 (22.4) | |
Fourth | 298 (17.4) | 253 (15.6) | |
Fifth (lower) | 297 (17.3) | 266 (16.4) | |
Skin colour | 0.526 | ||
White | 1143 (70.8) | 1092 (72.2) | |
Brown | 219 (13.6) | 185 (12.2) | |
Black | 252 (15.6) | 236 (15.6) | |
BMI category | 0.409 | ||
Normal weight | 1088 (65.2) | 1005 (63.7) | |
Overweight | 289 (17.3) | 302 (19.1) | |
Obese | 291 (17.5) | 272 (17.2) | |
Birth weight, g | 0.036 | ||
<2500 | 130 (7.5) | 156 (9.6) | |
⩾2500 | 1593 (92.5) | 1471 (90.4) | |
Continuous variables | Mean (s.d.) | Mean (s.d.) | P-valueb |
Anthropometry | |||
Weight (kg) | 25.1 (5.8) | 24.9 (6.1) | 0.228 |
Height (m) | 1.22 (0.1) | 1.20 (0.1) | <0.001 |
Body mass index (kg m−2) | 16.9 (2.8) | 17.0 (3.1) | 0.190 |
Waist circumference (cm)c | 58.4 (7.3) | 58.4 (7.8) | 0.951 |
Hip circumference (cm)c | 66.9 (7.1) | 67.9 (7.5) | <0.001 |
Thigh circumference (cm)c | 38.3 (5.3) | 38.9 (5.7) | 0.002 |
DXA variables | |||
Fat mass (kg) | 4.9 (3.9) | 6.3 (4.2) | <0.001 |
Fat free mass (kg) | 20.2 (2.5) | 18.5 (2.4) | <0.001 |
Trunk fat mass (kg) | 2.1 (1.9) | 2.7 (2.1) | <0.001 |
Android fat mass (kg) | 0.4 (0.4) | 0.5 (0.4) | <0.001 |
Gynoid fat mass (kg) | 1.1 (0.7) | 1.3 (0.7) | <0.001 |
