Table 5.

Hazard ratio analysis between the NMQ and scale III of the checklist for MSDs.

Variable (NMQ)		Musculoskeletal Disorders (MSDs) OR (95% CI)
Rotating the body while handling materials	Lower back
	No	1.00
	Yes	0.924 (0.35–2.48)
Material handling with one hand	Elbows
	No	1.00
	Yes	0.579 (0.15–2.21)
	Wrists/hands
	No	1.00
	Yes	1.14 (0.51–2.56)
Walking more than 3 m while handling/carrying materials	Neck
	No	1.00
	Yes	3.16 (0.68–14.62)
	Shoulders
	No	1.00
	Yes	2.03 (0.43–9.54)
	Elbows
	No	1.00
	Yes	1.60 (0.40–6.42)
	Wrists/hands
	No	1.00
	Yes	1.11 (0.40–3.13)
	Upper back
	No	1.00
	Yes	1.13 (0.41–3.11)
	Lower back
	No	1.00
	Yes	1.60 (0.43–6.00)
	Hips/thighs
	No	1.00
	Yes	0.89 (0.29–2.70)
	Knees
	No	1.00
	Yes	0.98 (0.32–3.00)
	Ankles/feet
	No	1.00
	Yes	1.022 (0.36–2.86)

Note: OR: odds ratio; CI: confidence interval.