Table 4.

Changes of musculoskeletal symptoms

	OR	95% CI	P
OR: Odds ratio
Feeling in good posture	2.94	0.729, 11.80	0.130
Low back pain	0.401	0.168, 0.954	0.039
Shoulder discomfort	0.425	0.153, 1.180	0.102
Knee pain	0.688	0.205, 2.310	0.545
Numbness	1.32	0.295, 5.940	0.713
Shoulder pain	0.554	0.183, 1.680	0.296
Neck pain	0.198	0.052, 0.748	0.017
Back pain	0.492	0.149, 1.630	0.245
Pain in extremities	0.378	0.086, 1.670	0.199
Headache	0.884	0.309, 2.530	0.818