Musculoskeletal disorders among construction workers: a one-year follow-up study

Table 3 Relative frequency and percentage of bricklayers and supervisors participating in a baseline and follow-up survey: i) perceiving their musculoskeletal complaints were work-related and ii) reporting they had many problems (≥7, on a scale from 0 to 10) during work due to their musculoskeletal complaints

Body region	Bricklayers						Construction supervisors
	MSD reported tobe work-related			Having many problemsduring work			MSD reported tobe work-related			Having many problemsduring work
	Relativefrequency	%	95% CI	Relativefrequency	%	95% CI	Relativefrequency	%	95% CI	Relativefrequency	%	95% CI
Shoulder and upper arm	61/71	86	(75.8-92.4)	29/70	41	(30.6-53.1)	21/43	49	(45.0-76.1)	16/42	38	(25.0-53.2)
Elbow	36/36	100	(91.7-100)	18/35	51	(35.6-67.0)	6/16	38	(18.4-61.5)	6/16	38	(18.4-61.5)
Lower arm and wrist	35/40	88	(73.4-95.0)	14/39	36	(22.7-51.6)	5/9	56	(26.6-81.2)	5/9	56	(26.6-81.2)
Hand	19/25	76	(56.3-88.8)	9/25	36	(20.1-55.6)	7/19	37	(19.1-59.1)	5/18	28	(12.2-51.2)
Hip	25/32	78	(61.0-89.3)	13/30	43	(27.4-60.8)	14/23	61	(40.7-77.9)	9/21	43	(24.4-63.5)
Upper leg	9/14	64	(38.6-83.8)	5/12	42	(19.3-68.1)	8/14	57	(32.6-78.7)	7/13	54	(29.1-76.8)
Knee	53/75	71	(59.5-79.8)	22/72	31	(21.1-42.0)	19/37	51	(35.9-66.6)	16/35	46	(30.5-61.8)
Lower leg and ankle	10/20	50	(29.9-70.1)	10/17	59	(36.0-78.4)	8/20	40	(21.8-61.4)	9/18	50	(29.0-71.0)
Foot	10/23	43	(25.6-63.2)	7/21	33	(17.1-54.8)	11/26	42	(25.5-61.1)	7/21	33	(17.1-54.8)
Neck	32/36	89	(74.1-96.2)	15/35	43	(28.0-59.2)	16/38	42	(27.8-57.8)	10/34	29	(16.7-46.3)
Back	108/120	90	(83.2-94.3)	54/111	49	(39.6-57.8)	39/73	53	(42.1-64.4)	23/68	34	(23.7-45.7)

ISSN: 1471-2474