Individual courses of low back pain in adult Danes: a cohort study with 4-year and 8-year follow-up

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Published online 2017 Jan 21. doi: 10.1186/s12891-016-1377-0

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Table 1

Proportions of participants in the various LBP definitions

		41 year n = 412	45 years n = 348	49 years n = 293
Sex	male n (%)	198 (48.1%)	159 (46.1%)	136 (46.4%)
Low back pain definitions % [95% confidence interval]	past year	69%[64;73]	68%[63;73]	70%[64;75]
	past month	42%[38;47]	48%[43;54]	41%[35;46]
	>30 days/year	25%[21;29]	26%[21;30]	24%[19;28]
	seeking care*	28%[23;32]	29%[24;34]	36%[30;41]
	non-trivial	18%[15;22]	20%[16;24]	20%[15;24]

*p = 0.0044 (test for trend)