Table 2. Schoolbags’ parameters in the groups taking age division into account.
| Parameters | Ia (n = 49) | Ib (n = 48) | Ic (n = 33) | II (n = 105) | K-W | Post hoc 1 |
|---|---|---|---|---|---|---|
|
X ± SD (Range) |
X ± SD (Range) |
X ± SD (Range) |
X ± SD (Range) |
|||
| Weight (kg) | 3.78 ± 1.39 (1.60–7.60) |
3.64 ± 1.09 (1.60–5.50) |
3.92 ± 1.28 (1.50–6.60) |
3.74 ± 1.38 (1.60–8.00) |
1.22 | – |
| % SW vs. BW | 17.14 ± 7.02 (7.14–38.19) |
11.15 ± 3.45 (5.31–19.57) |
10.19 ± 3.96 (3.52–20.96) |
14.27 ± 5.61 (6.20–28.57) |
35.31 | <0.001 {Ia/Ib; Ib/Ic; Ib/II; Ic/II} |
| %↑ GIS norm | 5.94 ± 6.02 (0.17–23.19) |
2.27 ± 1.94 (0.11–4.57) |
3.82 ± 2.53 (1.02–5.96) |
5.51 ± 3.57 (0.19–13.57) |
3.99 | – |
Notes.
Abbreviations
- Ia
- group with underweight
- Ib
- group with overweight
- Ic
- group with obesity
- II
- group with healthly weight
- %SW vs. BW
- % schoolbags weight vs. body weight %
- ↑ GIS norm
- % above the GIS norm (Polish abbreviation - Chief Sanitary Inspectorate)
- X
- average
- SD
- standard deviation
- K-W
- Kruskal–Wallis test
1
ANOVA Tukey’a post-hoc.