Table 3

Mean change scores (SD) and responsiveness ratios for the Shoulder Disability Questionnaire (SDQ) and the pain severity score (PSS) after one and six months

1 month 6 months
Number SDQ PSS Number SDQ PSS
Clinical improvement3-150 14240 (30)48 (28)20951 (26)56 (26)
Clinical stability1564 (18)14 (19) 775 (27)16 (25)
Clinical deterioration 21−2 (21)0.5 (21) 22−5 (12)−0.5 (16)
Responsiveness ratio 2.222.531.892.24
  • 3-150 Substitution of missing values was conducted for patients reporting complete recovery: for 74 patients at one month (PSS only) and for 157 patients at six months (PSS and SDQ), Responsiveness ratio: the ratio of the mean change score in clinically improved patients to the variability (SD) of change scores in clinically stable patients.