Secondary outcome measures
| Ultrasound tailored treatment | Usual care | Between-group difference | ||||||
|---|---|---|---|---|---|---|---|---|
| Mean | 95% CI | p Value | ||||||
| Outcome variable | N | Mean (SD) | N | Mean (SD) | difference* | Lower | Upper | |
| SPS | ||||||||
| Baseline | 56 | 20.6 (4.1) | 55 | 19.5 (4.3) | ||||
| 3 months | 53 | 14.3 (5.1) | 53 | 15.2 (5.5) | −2.1 | −4.2 | 0.1 | 0.06 |
| 6 months | 47 | 13.1 (4.7) | 47 | 13.5 (5.4) | −1.7 | −3.8 | 0.5 | 0.13 |
| 12 months | 51 | 11.1 (5.3) | 50 | 11.5 (4.8) | −1.7 | −3.9 | 0.5 | 0.12 |
| SDQ | ||||||||
| Baseline | 56 | 69.6 (17.3) | 55 | 68.3 (17.2) | ||||
| 3 months | 53 | 47.2 (32.4) | 53 | 49.4 (29.8) | −4.3 | −14.9 | 6.3 | 0.42 |
| 6 months | 47 | 40.7 (29.7) | 47 | 36.3 (27.1) | 3.2 | −8.1 | 14.4 | 0.58 |
| 12 months | 51 | 24.3 (30.2) | 50 | 31.0 (29.7) | −6.9 | −19.9 | 6.1 | 0.29 |
| EQ-5D | ||||||||
| Baseline | 56 | 0.68 (0.20) | 55 | 0.73 (0.22) | ||||
| 3 months | 53 | 0.76 (0.21) | 53 | 0.79 (0.22) | 0.01 | −0.07 | 0.09 | 0.74 |
| 6 months | 47 | 0.83 (0.18) | 47 | 0.84 (0.18) | 0.05 | −0.04 | 0.13 | 0.26 |
| 12 months | 51 | 0.81 (0.27) | 50 | 0.87 (0.16) | 0.002 | −0.10 | 0.10 | 0.97 |
| EQ-5D VAS | ||||||||
| Baseline | 56 | 69.4 (15.2) | 55 | 69.9 (14.2) | ||||
| 3 months | 53 | 72.6 (17.6) | 53 | 73.1 (13.7) | 0.13 | −5.16 | 4.90 | 0.96 |
| 6 months | 47 | 78.4 (12.0) | 47 | 76.5 (13.7) | 2.82 | −2.64 | 8.29 | 0.31 |
| 12 months | 51 | 78.3 (15.8) | 50 | 77.4 (14.5) | 1.62 | −4.76 | 8.00 | 0.62 |
*Linear mixed model analysis corrected for baseline and age (stratification variable, cut-off 50 years) and variation at the level of the GP practice, patient and repeated observations. The level-3 variance (GP practice) was equal to 0 for SPS and EQ-5D. The interaction between group and time was not significant.
EQ-5D VAS, Visual Analogue Scale 0–100 (100=best health status); EQ-5D, Euroqol five-item quality of life questionnaire tariff −1 to 1 (1=highest health-related quality of life); SDQ, Shoulder Disability Questionnaire 0–100 (100=most severe disability); SPS, Shoulder Pain Score 7–28 (28=most pain).