Table 1 Participant characteristics stratified by child’s household registration
From: Socioeconomic determinants of childhood obesity among primary school children in Guangzhou, China
Characteristics | Total | Migrant students | Non-Migrant (Resident) students | |
|---|---|---|---|---|
Mean ± SD or N (%) | Mean ± SD or N (%) | Mean ± SD or N (%) | P value | |
N | 9917 | 3057 (30.8) | 6860 (69.2) | |
Age (years) | 9.24 ± 1.50 | 9.27 ± 1.60 | 9.24 ± 1.45 | 0.243 |
BMI z-score | –0.19 ± 1.31 | –0.29 ± 1.22 | –0.14 ± 1.34 | < 0.001 |
Gender | ||||
Boys | 5529 (55.8) | 1792 (58.6) | 3737 (54.5) | < 0.001 |
Girls | 4388 (44.2) | 1265 (41.4) | 3123 (45.5) | |
Age | ||||
5–6 years | 657 (6.6) | 242 (7.9) | 415 (6.0) | < 0.001 |
7–8 years | 3784 (38.2) | 1116 (36.5) | 2668 (38.9) | |
9–10 years | 3942 (39.7) | 1178 (38.5) | 2764 (40.3) | |
11–12years | 1534 (15.5) | 521 (17.0) | 1013 (14.8) | |
Level of yearly income (per-capital) | ||||
1st quartile (≤12000 RMB) | 1463 (17.3) | 669 (27.4) | 772 (13.0) | < 0.001 |
2nd quartile (12001–20000 RMB) | 2327 (27.6) | 882 (34.9) | 1445 (24.4) | |
3rd quartile (20001–34286 RMB) | 2545 (30.2) | 609 (24.1) | 1936 (32.7) | |
4th quartile (≥ 34287 RMB) | 2105 (24.9) | 342 (13.5) | 1763 (29.8) | |
Father’s education | ||||
Primary school and junior high school | 3919(42.6) | 1858 (67.9) | 2061 (31.9) | < 0.001 |
Senior high school and vocational school | 4006(43.5) | 783 (28.6) | 3223 (49.8) | |
University and above | 1281(13.9) | 96 (3.5) | 1185 (18.3) | |
Mother’s education | ||||
Primary school and junior high school | 4608(50.0) | 2103 (76.9) | 2505 (38.6) | < 0.001 |
Senior high school and vocational school | 3551 (38.5) | 565 (20.7) | 2986 (46.1) | |
University and above | 1057 (11.5) | 66 (2.4) | 991 (15.3) | |
Child Weight status | ||||
Normal weight | 8112 (81.8) | 2621 (85.7) | 5491 (80.0) | < 0.001 |
Overweight | 1126 (11.4) | 290 (9.5) | 836 (12.2) | |
Obese | 679 (6.8) | 146 (4.8) | 534 (7.8) | |
Father’s Weight status | ||||
Normal weight | 5037 (59.8) | 1534 (63.0) | 3503 (58.5) | 0.001 |
Overweight | 2853 (33.9) | 764 (31.4) | 2089 (34.9) | |
Obese | 529 (6.3) | 135 (5.5) | 394 (6.6) | |
Mother’s Weight status | ||||
Normal weight | 7034 (81.6) | 1975 (79.9) | 5059 (82.3) | 0.003 |
Overweight | 1394 (16.2) | 425 (17.2) | 969 (15.8) | |
Obese | 190 (2.2) | 72 (2.9) | 118 (1.9) | |