Assessing the effects of an educational program for the prevention of work-related musculoskeletal disorders among school teachers

Shuai, Jian; Yue, Pengying; Li, Liping; Liu, Fengying; Wang, Sheng

doi:10.1186/1471-2458-14-1211

Table 1 Pre- and post-intervention comparative results on WMSD-related knowledge

From: Assessing the effects of an educational program for the prevention of work-related musculoskeletal disorders among school teachers

Questions	Pre-intervention		Six months post-intervention		12 months post-intervention		χ ²	P
Questions	n	%	n	%	n	%	χ ²	P
1. What kind of disease is a WMSD?							143.8128	<0.0001
Correct	89	25.43	156	47.56	229	71.79
Wrong	261	74.57	172	52.44	90	28.21
2. Can WMSDs be prevented or controlled?							25.2716	<0.0001
Correct	245	70.00	261	79.57	274	85.89
Wrong	105	30.00	67	20.43	45	14.11
3. Do you know about physiological bending of the spine?							97.7663	<0.0001
Yes	71	20.29	182	55.49	95	29.78
No	279	79.71	146	44.51	224	70.22
4. Do you know how to adjust the height of the office chair to make yourself more comfortable?							15.7876	0.0004
Yes	73	20.86	107	32.62	105	32.92
No	277	79.14	221	67.38	214	67.08
5. Do you know the correct posture to use at the computer?							27.5894	<0.0001
Yes	117	33.43	172	52.44	154	48.28
No	233	66.57	156	47.56	165	51.72
6. Do you know the correct posture for working at your desk?							50.1483	<0.0001
Yes	163	46.57	240	73.17	180	56.43
No	187	53.43	88	26.83	139	43.57
7. What is the optimal elbow angle for typing at a computer?							92.8680	<0.0001
Correct	61	17.43	170	51.83	95	29.78
Wrong	289	82.57	158	48.17	224	70.22
8. What is the optimal angle between monitor and your sight line when using a computer?							24.9632	<0.0001
Correct	141	40.29	164	50.00	148	46.39
Wrong	209	59.71	164	50.00	171	53.61
9. Should you not leave space, when working in a sitting position, between the seat front and back of your legs?							81.4197	<0.0001
Correct	201	57.43	263	80.18	275	86.21
Wrong	149	42.57	65	19.82	44	13.79
10. If you have neck symptoms, should you raise the pillow to sleep?							156.8531	<0.0001
Correct	218	62.29	295	89.94	309	96.87
Wrong	132	37.71	33	10.06	10	3.13
11. Is the optimal chair height up to the position of knee?							54.0184	<0.0001
Correct	244	69.71	271	82.62	293	91.85
Wrong	106	30.29	57	17.38	26	8.15

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ISSN: 1471-2458

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