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Table 2 IMPaCT Back study: the number of LBP patients and NHS physiotherapy treatment sessions by risk category

From: Implementing the Keele stratified care model for patients with low back pain: an observational impact study

stratified care model risk category pre-implementation: phase 1 post-implementation: phase 3 % change in mean number of treatment sessions between phases 1 and 3
all patientsa patients providing data at 6 monthsb all patientsa patients providing data at 6 monthsb
number (%) number (%) mean number (sd) of treatment sessions number (%) number (%) mean number (sd) of treatment sessions
Low 136 (37) 81 (35) 1.05 (2.3) 214 (39) 110 (35) 1.14 (3.3) 9
Medium 151 (41) 104 (45) 1.45 (0.8) 232 (42) 143 (46) 2.08 (3.0) 43
High 81 (22) 48 (21) 1.87 (2.8) 108 (20) 61 (19) 2.67 (3.9) 43
Total 368 (100) 233 (100) 1.40   554 (100) 314 (100) 1.87   33
  1. sd standard deviation
  2. aSource: risk-category level data from Hill et al., [10, Table 1]
  3. bSource: risk-category level data from Whitehurst et al., [13, web appendix table 3b]