Table 4 Mean (SD) values for Rapid Office Strain Assessment (ROSA) final and section scores in the control group (CG) and experimental group (EG) before (pre) and after (post) intervention

Final Score

6.2 (1.2)

6.2 (1.1)

0.0 (0.4)

6.9 (1.3)

3.9 (0.6)

-2.9 (1.4)

2.84

 < 0.01

Section A—Chair

6.1 (1.2)

6.2 (1.1)

0.1 (0.4)

6.9 (1.3)

3.9 (0.6)

-2.9 (1.4)

2.84

 < 0.01

 Height and Pan Depth

4.8 (1.0)

4.9 (1.1)

0.1 (0.3)

5.0 (1.1)

3.2 (0.5)

-1.8 (1.2)

2.26

 < 0.01

 Armrest and Back Support

5.6 (1.1)

5.7 (1.1)

-0.1 (0.3)

6.3 (1.2)

3.9 (0.6)

-2.4 (1.3)

2.58

 < 0.01

Section B—Monitor and Phone

2.7 (1.1)

2.7 (1.0)

-0.1 (0.2)

2.3 (0.9)

1.4 (0.6)

-0.8 (0.8)

1.29

 < 0.01

 Monitor

3.4 (1.0)

3.4 (1.1)

0.0 (0.2)

3.1 (0.9)

2.1 (0.3)

-0.9 (0.8)

1.69

 < 0.01

 Phone

1.1 (1.0)

1.1 (1.0)

0.0 (0.0)

0.7 (1.3)

0.5 (0.9)

-0.2 (0.6)

0.58

0.02

Section C – Mouse and Keyboard

4.1 (1.4)

4.2 (1.2)

0.1 (0.2)

4.2 (1.1)

2.6 (0.6)

-1.6 (1.0)

1.89

 < 0.01

 Mouse

2.8 (0.8)

2.8 (0.8)

0.1 (0.4)

3.1 (0.7)

2.2 (0.5)

-0.8 (0.6)

1.54

 < 0.01

 Keyboard

3.7 (1.1)

3.8 (0.9)

0.1 (0.4)

3.4 (0.9)

2.1 (0.6)

-1.3 (0.7)

2.34

 < 0.01