Age (yrs ) |
Male |
Female |
Total |
|||
|
Number |
% |
Number |
% |
Number |
% |
11 years |
29 |
11.65 |
30 |
11.95 |
59 |
11.80 |
12 years |
57 |
22.89 |
44 |
17.53 |
101 |
20.20 |
13 years |
82 |
32.93 |
71 |
28.29 |
153 |
30.60 |
14 years |
81 |
32.53 |
106 |
42.23 |
187 |
37.40 |
Total |
249 |
100.00 |
251 |
100.00 |
500 |
100.00 |
Variable |
Mean |
Standard deviation (sd) |
Age (years) |
12.94 |
1.03 |
Weight (kg) |
42.85 |
7.54 |
Absolute weight of backpack |
6.75 |
0.99 |
Relative weight of back pack (%) |
15.95 |
2.24 |
Age |
Absolute Weight (Kg) |
Relative weight (% of body weight) |
||||||
|
No |
Male Mean ± sd |
No |
Female Mean ± sd |
No |
Male Mean ± sd |
No |
Female Mean ± sd |
11 years |
29 |
5.86 ± 0.62 |
30 |
5.862± 0.48 |
29 |
16.51 ± 1.90% |
30 |
17.22 ± 2.35 % |
12 years |
57 |
6.59 ± 1.06 |
44 |
6.40 ± 1.01 |
57 |
16.30 ± 2.33% |
44 |
16.07 ± 1.99 % |
13 years |
82 |
7.27 ± 0.86 |
71 |
6.88 ± 0.95 |
82 |
15.31 ± 2.07% |
71 |
16.16 ± 2.15 % |
14 years |
81 |
6.90 ± 0.98 |
106 |
6.88 ± 0.87 |
81 |
14.82 ± 2.12% |
106 |
16.40 ± 2.21 % |
|
249 |
6.83 ± 1.02 |
251 |
6.67 ± 0.95 |
249 |
15.52 ±2.22 % |
251 |
16.37 ±2.19 % |
Relative Wt. of Bag |
Male |
Female |
Total |
|||||||||
|
N |
Sym |
sign |
P value |
n |
Sym |
sign |
P value |
n |
Sym |
sign |
P value |
≤11%
|
13 |
1 |
0 |
1.000(NS) |
1 |
0 |
0 |
NA |
14 |
1 |
0 |
1.000(NS) |
12% |
21 |
2 |
0 |
0.472(NS) |
8 |
0 |
0 |
NA |
29 |
2 |
0 |
0.472(NS) |
13% |
18 |
5 |
0 |
0.054(NS)
|
16 |
0 |
0 |
NA |
34 |
5 |
0 |
0.063(NS) |
14% |
45 |
12 |
0 |
0.000*** |
35 |
5 |
0 |
0.063(NS) |
80 |
17 |
0 |
0.000*** |
15% |
49 |
24 |
0 |
0.000*** |
49 |
32 |
0 |
0.000*** |
98 |
56 |
0 |
0.000*** |
≥16%
|
103 |
93 |
15 |
0.000*** |
142 |
130 |
28 |
0.000*** |
254 |
223 |
43 |
0.000*** |
|
Musculoskeletal Symptoms |
Musculoskeletal Signs |
||||
Total Children (n= 500) |
Neck pain |
Back pain |
Shoulder pain |
Redness below Straps |
Tenderness |
Limitation of Movements |
Symptomatic children
304 (60.6%) |
73 (24%) |
255
(83.88%) |
247 (81.25%) |
25 (8.2%) |
42 (13.8%) |
6 (1.97%) |