Table 3

STarT Back known-group validity for work status

VariableWork status; no. (%) of patients*†p value§
Full-time‡
n = 45		Part-time‡
n = 9		Not working
n = 28
Total score, mean ± SD4.8 ± 25.22 ± 26.79 ± 10.001
Subscale score, mean ± SD2.47 ± 22.56 ± 13.75 ± 10.001
Risk category0.002
 Low11 (24)1 (11)1 (4)
 Medium23 (51)6 (67)8 (29)
 High11 (24)2 (22)19 (68)

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

  • ↵* Except where noted otherwise.

  • ↵† Eighteen patients were on training or retired.

  • ↵‡ Regular/modified.

  • ↵§ F statistic or Fisher exact test, as appropriate.