Evidence-based classification of low back pain in the general population: one-year data collected with SMS Track

doi:10.1186/2045-709X-21-30

PMC full text:

Chiropr Man Therap. 2013; 21: 30.

Published online 2013 Sep 2. doi: 10.1186/2045-709X-21-30

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Table 3

The fewer the number of episodes of low back pain (LBP) the shorter the duration of this episode and the larger the number of episodes the longer the duration of episodes in a study sample from the general Danish population of 50-yr olds (N=261) followed fortnightly over 1 year

Number of episodes with LBP per subject	Longest duration of episodes of LBP per subject was 1 pain fortnight		Longest duration of episodes of LBP per subject was ≥ 2 pain fortnights
Number of episodes with LBP per subject	N	(%)	N	(%)
1	39/57	(68)	18/57	(32)
2	21/41	(51)	20/41	(49)
3 or 4	13/37	(35)	24/37	(65)

Data obtained from a Danish general population of 50-year olds (N = 261) followed with fortnightly text-messages over one year.