Table 1. Descriptive Statistics for the BMI and Internalizing Symptoms and Their Co-occurrence at Each Time Pointa.
| Variable | Full Sample | Boys | Girls | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. | Mean (SD) | Obese or High Internalizing, No. (%)b | Obese and High Internalizing, No. (%) | No. | Mean (SD) | Obese or High Internalizing, No. (%)b | Obese and High Internalizing, No. (%) | No. | Mean (SD) | Obese or High Internalizing, No. (%)b | Obese and High Internalizing, No. (%) | |
| BMI | ||||||||||||
| Age, y | ||||||||||||
| 3 | 14 317 | 16.85 (2.04) | 650 (4.5) | 30 (4.9)c | 7240 | 17.00 (2.14) | 332 (4.6) | 15 (4.8)c | 7077 | 16.70 (1.93) | 318 (4.5) | 15 (5.1)c |
| 5 | 14 949 | 16.36 (1.90) | 864 (5.8) | 49 (6.0)c | 7635 | 16.40 (1.91) | 409 (5.4) | 26 (6.7)c | 7314 | 16.33 (1.88) | 455 (6.2) | 23 (5.3)c |
| 7 | 13 414 | 16.66 (2.36) | 814 (6.1) | 80 (10.1)c | 6799 | 16.6 (2.32) | 365 (5.4) | 40 (11.2)c | 6615 | 16.71 (2.40) | 449 (6.8) | 40 (9.2)c |
| 11 | 12 801 | 19.25 (3.66) | 855 (6.7) | 137 (17.9)c | 6484 | 19.05 (3.55) | 412 (6.4) | 72 (19.4)c | 6317 | 19.47 (3.76) | 443 (7.0) | 65 (16.5)c |
| 14 | 10 767 | 21.47 (4.14) | 814 (7.6) | 137 (19.8)c | 5478 | 20.95 (4.04) | 403 (7.4) | 57 (16.6)c | 5289 | 22.00 (4.18) | 411 (7.8) | 80 (22.9)c |
| Internalizing Symptoms | ||||||||||||
| Age, y | ||||||||||||
| 3 | 14 694 | 1.38 (1.52) | 655 (4.5) | 30 (5.1)d | 7497 | 1.38 (1.52) | 324 (4.3) | 15 (5.2)d | 7197 | 1.38 (1.52) | 331 (4.6) | 15 (4.9)d |
| 5 | 14 694 | 1.40 (1.6) | 823 (5.6) | 49 (6.2)d | 7514 | 1.37 (1.61) | 417 (5.6) | 26 (6.5)d | 7180 | 1.43 (1.59) | 406 (5.7) | 23 (5.8)d |
| 7 | 13 401 | 1.54 (1.78) | 1024 (7.6) | 80 (8.1)d | 6819 | 1.51 (1.81) | 543 (8.0) | 40 (7.7)d | 6582 | 1.56 (1.74) | 481 (7.3) | 40 (8.6)d |
| 11 | 11 822 | 1.87 (2.00) | 1316 (11.1) | 137 (11.0)d | 5943 | 1.81 (2.00) | 643 (10.8) | 72 (11.9)d | 5879 | 1.93 (1.99) | 673 (11.5) | 65 (10.1)d |
| 14 | 10 123 | 2.04 (2.14) | 1369 (13.5) | 137 (11.2)d | 5065 | 1.75 (2.02) | 545 (10.8) | 57 (11.6)d | 5058 | 2.33 (2.22) | 824 (16.3) | 80 (10.9)d |
| SR symptoms at 14 y of age | 11 190 | 5.52 (5.85) | 1731 (15.5) | 166 (9.6)d | 5539 | 4.03 (4.57) | 456 (8.2) | 47 (10.3)d | 5551 | 6.99 (6.57) | 1275 (22.6) | 119 (10.3)d |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared); SR, self-reported.
Descriptive estimates are presented for available participants at each time point without accounting for survey design weights and sample attrition in these estimates.
The number (percentage) of obese participants is given under the BMI heading and was determined using the International Obesity Taskforce thresholds for children; the number (percentage) of participants with high internalizing symptoms is given under the Internalizing Symptoms heading, showing children above the established clinical cutoff for the Strengths and Difficulties Questionnaire.
Of those who are classified as obese based on BMI.
Of those with above cutoff levels of internalizing symptoms.