Associations between Wage System and Risk Factors for Musculoskeletal Disorders among Construction Workers

Table 3

Categorical analysis for wage system on time pressure and general pain.

	Total		Hourly/monthly paid (H)		Individual performance wage (I)		Group performance wage (G)		Chi-square test
		%		%		%		%	-value
Time pressure
Always/Often	(98)	22.6	(65)	24.8	(18)	26.9	(15)	14.4
Sometimes	(207)	47.8	(132)	50.4	(29)	44.2	(46)	44.2
Rarely/Never	(128)	29.6	(65)	24.8	(20)	29.9	(43)	41.3
									0.017
Pain general
Every day	(120)	27.1	(68)	25.7	(19)	27.5	(33)	30.6
Several times a week	(126)	28.5	(75)	28.3	(20)	29	(31)	28.7
A few times a month	(127)	28.7	(78)	29.4	(20)	29	(29)	26.9
A few times a year	(59)	13.3	(35)	13.2	(9)	13	(15)	13.9
Never	(10)	2.3	(9)	3.4	(1)	1.4	(0)	0
									0.182

Note: Between-condition comparisons for categorical data were made with Pearson’s Chi-squared test.
Note: Time pressure was assessed by the question: “How often can you work at an nice and easy pace and still get your work done?”.
Pair-wise difference between G and I, .
Pair-wise difference between G and H, .