Observation | N | Mean | Median | SD | 95% CI | |
---|---|---|---|---|---|---|
Baseline | Summary of SSI-28 mean score | 510 | 2.4 | 2.3 | 0.7 | 2.3 to 2.4 |
 | Summary of SSI-28 pain item mean score | 498 | 2.3 | 2.1 | 0.8 | 2.3 to 2.4 |
 | Summary of SSI-28 somatic item mean score | 511 | 2.4 | 2.3 | 0.7 | 2.4 to 2.4 |
3 months | Change in SSI-28 mean score | 465 | 0.5 | 0.4 | 0.5 | 0.5 to 0.4 |
 | Change in SSI-28 pain item mean score | 447 | -0.3 | -0.3 | 0.6 | -0.4 to -0.3 |
 | Change in SSI-28 somatic item mean score | 466 | -0.5 | -0.5 | 0.6 | -0.6 to -0.5 |
6 months | Change in SSI-28 mean score | 461 | -0.7 | -0.6 | 0.6 | -0.7 to -0.6 |
 | Change in SSI-28 pain item mean score | 441 | -0.5 | -0.4 | 0.7 | -0.6 to -0.4 |
 | Change in SSI-28 somatic item mean score | 461 | -0.7 | -0.7 | 0.6 | -0.8 to -0.7 |