Table 1

Baseline characteristics of the participants according to study group

CharacteristicsArthroscopic subacromial decompression (n=59)Diagnostic arthroscopy (n=63)Exercise therapy (n=71)
Age, years50.5 (7.3)50.8 (7.6)50.4 (6.6)
Female, n (%)42 (71)46 (73)47 (66)
Dominant hand affected, n (%)35 (59)36 (57)46 (65)
Duration of symptoms, months18 (14)18 (19)22 (23)
Able to work normally regardless of shoulder symptoms, n (%)27 (46)31 (49)35 (49)
Visual analogue scale score, at rest*41.3 (25.8)41.6 (25.5)41.7 (27.5)
Visual Analogue Scale (VAS) score, on arm activity*71.2 (23.6)72.3 (21.7)72.4 (20.8)
Constant-Murley score†32.2 (15.8)31.7 (14.0)35.2 (16.2)
Simple shoulder test score‡4.9 (2.9)4.9 (2.9)4.8 (2.7)
15D score§0.89 (0.06)0.89 (0.07)0.88 (0.08)
SF-36 score¶
 Physical health74.3 (12.5)74.1 (13.1)75.7 (10.1)
 Mental health79.4 (14.2)77.9 (16.7)75.6 (18.2)
  • Data are presented as mean (SD) unless otherwise indicated.

  • *Shoulder pain at rest and at activity was assessed on a 100 mm VAS of 0–100, with 0 denoting no pain and 100 denoting extreme pain.

  • †Scoring system for evaluation of various shoulder disorders consisting of both objective (range of motion and strength) and subjective measurements (pain assessment, work load and leisure time activities), summarised in a score between 0 and 100; higher score indicates better shoulder function.

  • ‡Based on 12 questions with yes (1) or no (0) response options; maximum score is 12, indicating normal shoulder function; minimum score of 0 points indicates severely diminished shoulder function.

  • §Generic health-related quality of life instrument comprising 15 dimensions; maximum score is 1 (full health), and minimum score is 0 (death).

  • ¶Generic health-related quality of life instrument to quantify the physical, functional and psychological aspects of health-related quality of life. It consists of 36 questions in eight subscales that assess physical, functional, social and psychological well-being. Score ranges from 0 to 100, where a higher score is associated with better health.