Table 3.

Positive ergonomics components of the examined workstations.

Number	Ergonomics components	KAU∗ (N = 100)		SAUDIA∗∗ (N = 100)		STC∗∗∗ (N = 100)
		Number of positives	Average	Number of positives	Average	Number of positives	Average
I	Noise and thermal environment
1	Quietness	75	84.0	78	81.5	83	86.5
2	Air-conditioning	93		85		90
II	Display screen
3	Monitor location	71	80.4	70	75.4	97	87.4
4	Monitor top	80		100		99
5	Monitor distance from eye	71		100		98
6	Monitor tilting	75		72		97
7	Glare and reflection	68		60		70
8	Image stability	91		67		80
9	Ease of reading	95		68		74
10	Brightness and contrast	92		66		84
III	Desk
11	Space	81	78.4	100	81.4	100	99.4
12	Layout	85		85		99
13	Distance from eye	74		86		100
14	Room for leg	93		65		100
15	Hand/wrist	59		71		98
IV	Mouse
16	Distance from hand	83	77.7	75	71.3	72	71.3
17	Run	76		78		76
18	Operator's familiarity	74		61		66
V	Seat
19	Height	89	75.3	100	74.7	99	77.7
20	Dimensions	78		72		95
21	Armrest	76		75		77
22	Backrest	64		79		59
23	Pad (foam)	71		60		63
24	Comfort and stability	73		62		73
VI	Space and room layout
25	Adequate access	90	73.7	65	68.9	24	78.7
26	Space around seat	86		100		100
27	Layout	80		61		93
28	Location of equipment	62		61		88
29	Monitors' positions	51		66		100
30	Obstructions and hazards	75		60		100
31	Housekeeping	72		69		46
VII	Illumination
32	Lighting level	91	72.3	55	48.8	60	86.8
33	Luminaries	66		46		99
34	Effectiveness	61		43		97
35	Background behind screens	71		51		91
VIII	Training and provision of information
36	Use of software	75	71.5	46	47.3	76	60.3
37	Habit keying	73		59		66
38	Adjustment	74		43		65
39	Good posture and visual fatigue	64		41		34
IX	Keyboard
40	Distance	69	69.7	66	66.0	98	95.0
41	Width	73		69		75
42	Height and key angle	67		63		92
X	Footrest
43	Compression of thigh	68	68.0	65	65.0	54	54.0
XI	Document holder
44	Need	64	63.0	90	90.0	39	38.0
45	Balance of head posture	62		90		37
XII	Work organization rating
46	Breaks	79	59.7	100	73.3	88	89.3
47	Urgent peaks and interruptions	40		55		83
48	Over time	60		65		97
XIII	Task and posture
49	Phoning while typing	33	54.0	90	95.0	99	90.0
50	Typing posture	75		100		81
Total average score			72.3		71.1		81.0

∗KAU = King Abdulaziz University.

∗∗SAUDIA = Saudi Airlines.

∗∗∗STC = Saudi Telecom Company.