Table 4 An overview of the prognostic capacity of the new subgroupings compared to that of the comparator prognostic variables
Outcome measure | Description of prognostic variable | Prognostic variable | Single-stage and two-stage subgroupings | |||
|---|---|---|---|---|---|---|
Table 3 (absolute outcomes) | Table 5 (in addition to baseline values) | Table 6 (in addition to recovery belief) | Table 7 (in addition to recovery belief and baseline values) | |||
Pain intensity (Numeric Rating Scale, 0–10) | Existing subgrouping tools | STarT Back Tool | Highera | Higher | Higher | Higher |
Quebec Task Force classification | Higher | Higher | Similar at 3 m, higher at 2 w and 12 m | Similar at 3 m, higher at 2 w and 12 m | ||
Baseline characteristics | Baseline back pain intensity (0–10 Numeric Rating Scale) | Higher | N/A | Higher | N/A | |
Baseline leg pain intensity (0–10 Numeric Rating Scale) | Higher | Similar at 2 w and 12 m, higher at 3 m | Similar at 2 w and 12 m, higher at 3 m | Lower at 2 w and 12 m, higher at 3 m | ||
Baseline disability (RMDQ-23), (0–100 = highest disability) | Higher | Higher | Higher | Higher | ||
Recovery belief (0–10 = very likely) | Similar at 2 w and 12 m, lower at 3 m | Similar at 2 w and 12 m, lower at 3 m | N/A | N/A | ||
Results of first stage of two-stage LCA | All domain-specific patient categorisations | Lowerb | Lower | Lower | Lower | |
Disability (23-item Roland Morris Disability Questionnaire, proportional score) | Existing subgrouping tools | STarT Back Tool | Higher | Higher | Higher | Higher |
Quebec Task Force classification | Higher | Higher | Higher | Similar 12 m, higher at 2 w and 3 m | ||
Baseline characteristics | Baseline back pain intensity (0–10 Numeric Rating Scale) | Higher | Higher | Higher | Higher | |
Baseline leg pain intensity (0–10 Numeric Rating Scale) | Higher | Higher | Similar at 12 m, higher at 2 w and 3 m | Lower at 12 m, higher at 2 w and 3 m | ||
Baseline disability (RMDQ-23), (0–100 = highest disability) | Similar at 2 w, higher at 3 m and 12 m | N/A | Lower at 2 w, similar at 12 m, higher at 3 m | N/A | ||
Recovery belief (0–10 = very likely) | Similar at 3 m, lower at 12 m, higher at 2 w | Lower 3 m and 12 m, higher at 2 w | N/A | N/A | ||
Results of first stage of two-stage LCA | All domain-specific patient categorisations | Lower | Lower | Lower | Lower | |