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Table 1 Brief pain inventory severity and interference scores2

From: What is the perceived impact of Alexander technique lessons on health status, costs and pain management in the real life setting of an English hospital? The results of a mixed methods evaluation of an Alexander technique service for those with chronic back pain

  Baseline 6 weeks 3 months Difference baseline to 6 weeks Difference baseline to 3 months Difference 6 weeks to 3 months
Number 43 41 39 41 39 38
Mean severity score (95 % CI) 5.0 (4.4 to 5.6) 3.7 (3.1 to 4.4) 3.7 (3.0 to 4.4) −1.2 (-1.66 to -0.75) −1.12 (-1.65 to – 0.58) 0.07 (-0.37 to 0.5)
Mean interference score (95 % CI) 5.1 (4.4 to 5.9) 4.0 (3.2 to 4.8) 3.7 (3.0 to 4.5) −1.10 (-1.62 to -0.59) −1.17 (-1.69 to -0.65) 0.02 (-0.34 to 0.39)
  1. 2Mean (paired) difference is not calculated on the same set of patients as the raw mean because not all participants have measurements at both time points (and therefore we don’t observe a value for the change for these participants). Note that there are 39 participants with data at both baseline and 3 months, which is fewer than the number of participants at either one of the individual time points, hence difference between two figures e.g. 5.1-3.7=1.4 but in table reported as 1.17