The Nordic back pain subpopulation program - individual patterns of low back pain established by means of text messaging: a longitudinal pilot study

Table 2 Possible combinations of early and late course into final categories

At the 4^th week	Late courses which the early course can possibly be combined with
Improved	Mainly recovered Stays in the category Fluctuating Moves towards mainly worsened
Unchanged	Mainly recovered Stays in the category Moves towards mainly improved Fluctuating Moves towards mainly worsened
Worsened	Mainly recovered Stays in the category Moves towards mainly improved Fluctuating

The possible combinations that form thirteen categories, which describe pain courses during 18 weeks. First the appropriate category "at the 4th week" was chosen and afterwards the subsequent course.

ISSN: 2045-709X