Upper extremity disorders in heavy industry workers in Greece

Table 1 Individual and job-related characteristics of the population under study (n = 802)

	n (%)
Sex
Male	763 (95.1)
Female	39 (4.9)
Age (yr)
< 40	407 (50.7)
40-50	301 (37.5)
> 50	94 (11.7)
Marital status
Married	63 (7.9)
Single	739 (92.0)
Basic education
University/PhD	83 (10.3)
Technical school	503 (62.7)
Elementary/high school	216 (27)
Specialty
White-collar workers	91 (11.3)
Blue-collar workers	711 (88.7)

Table 2 Final scores and mean values of the three categories of the QuickDASH Questionnaire

	Mean value	Score (0-100)	n (%)
Everyday restrictions (n = 802)	2786	< 5	681 (85.1)
		5-50	118 (14.5)
		> 50	3 (0.4)
Work restriction (n = 802)	1704	< 5	731 (91.2)
		5-50	66 (8.2)
		> 50	5 (0.6)
Sports/music restrictions (n = 364)	2490	< 5	324 (89)
		5-50	33 (9.1)
		> 50	7 (1.9)

< 5 = no disability, 5-50 = slight disability, > 50 = medium to full disability.

Table 3 Multiple linear regression of upper arm disability during everyday activities

	P-value	b	95%CI
			Lower	Upper
Age	0	0.64	0.28	0.1
Physical SF-36	0	-0.157	-0.194	-0.12
Mental SF-36	0	-0.061	-0.093	-0.028
WAI	0.08	-0.142	-0.246	-0.037

Covariates of the final model (P < 0.05), b = unstandardized coefficient. CI: Confidence interval; SF-36: Short-form-36; WAI: Work Ability Index.

Table 4 Multiple linear regression of upper arm disability during work

	P-value	b	95%CI
			Lower	Upper
Physical SF-36	0	-0.066	-0.102	-0.03
Mental SF-36	0.008	-0.042	-0.073	-0.011
WAI	0.055	-0.099	-0.2	-0.002

Covariates of the final model (P < 0.05), b = unstandardized coefficient. CI: Confidence interval; SF-36: Short-form-36; WAI: Work Ability Index.

Table 5 Multiple linear regression of upper arm disability during sport/music activities

	P-value	b	95%CI
			Lower	Upper
Elementary/high school education	0.029	2.14	0.223	4.056
WAI	0.001	-0.376	-0.593	-0.16

Covariates of the final model (P < 0.05), b = unstandardized coefficient. CI: Confidence interval; WAI: Work Ability Index.