Table 4.

Factors associated with the prevalence of back pain and work absence in shipyard workers-working environment

		Existence of pain		Absence from work
		n = 175		n = 132
	Frequency (%)	OR ICC95%	P value	OR ICC95%	P value
・Often work outdoors	27.4	1.118 0.692–1.807	0.648	1.567 0.963–2.549	0.070
・Work on unstable floor	31.4	1.131 0.677–1.890	0.639	0.998 0.586–1.700	0.995
・Expose to significant trembling, vibration, or impact	17.6	1.115 0.629–1.974	0.710	0.595 0.322–1.098	0.097
・Often work in a noisy environment	60.1	1.252 0.776–2.019	0.357	0.840 0.506–1.393	0.499
・Work in narrow space	18.9	1.912 1.094–3.343	0.023	1.359 0.775–2.381	0.284
・Use fire at work	43.6	1.637 1.017–2.634	0.042	2.116 1.285–3.485	0.003

OR odds ratio