Table 2

STarT Back known-group validity for compensation status

VariableGroup; no. (%) of patients*p value†
CaseControl
Total score, mean ± SD6.04 ± 24.54 ± 20.001
Subscale score, mean ± SD3.32 ± 12.26 ± 10.001
Risk category0.002
 Low4 (8)14 (28)
 Medium21 (42)26 (52)
 High25 (50)10 (20)

  • SD = standard deviation; STarT Back = Subgroups for Targeted Treatment for Back.

  • ↵* Except where noted otherwise.

  • ↵† t test or Fisher exact text, as appropriate.