Table 2: Cornell Musculoskeletal Discomfort Questionnaire scores of subjects seated on chair and ball.

NeckShoulderLow backHipKnee
Chair Ball Chair Ball Chair Ball Chair Ball Chair Ball

Mean 28.32.422.60.610.31.401.20.200.3
SD 4.981.485.770.58.20.850.60.600.9
SE 0.780.230.910.111.290.130.090.100.14
-value2.11.251.301.620.02

< 0.05 level of significance

SD: standard deviation; SE: standard error; -value: -test scores.