Table 1. Summary of academic performance, media use, BMI z-score and SDQ total score amongst n = 1239 children, stratified by school year level.
| Grade 3 | Grade 5 | |||
|---|---|---|---|---|
| na | Value | na | Value | |
| Academic performance (mean (SD)) | ||||
| NAPLAN–Reading score | 1067 | 440.8 (86.1) | 1035 | 521.5 (77.5) |
| NAPLAN–Numeracy score | 1053 | 418.6 (72.4) | 1035 | 503.5 (68.0) |
| Media use (hours/day) (n (%)) | ||||
| Watching TV | 919 | 882 | ||
| ≥ 0 and ≤ 1 hour | 180 (19.6) | 180 (20.4) | ||
| > 1 and ≤ 2 hours | 366 (39.8) | 370 (42.0) | ||
| > 2 hours | 373 (40.6) | 332 (37.6) | ||
| Playing video games | 920 | 849 | ||
| 0 hours | 192 (20.9) | 204 (24.0) | ||
| > 0 and ≤ 1 hour | 498 (54.1) | 381 (44.9) | ||
| > 1 hour | 230 (25.0) | 264 (31.1) | ||
| Using a computer | 920 | 847 | ||
| 0 hours | 219 (23.8) | 98 (11.6) | ||
| > 0 and ≤ 1 hour | 549 (59.7) | 497 (58.7) | ||
| > 1 hour | 152 (16.5) | 252 (29.8) | ||
| BMI z–score (mean (SD)) | 1186 | 0.6 (1.2) | 1094 | 0.5 (1.2) |
| SDQ total score (mean (SD)) | 1204 | 8.4 (5.5) | 902 | 8.3 (5.9) |
BMI, Body Mass Index; NAPLAN, National Assessment Programme–Literacy and Numeracy; SDQ, Strengths and Difficulties Questionnaire.
a Number with observed data (remainder are missing).