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Table 4 Age- and sex-adjusted comparisons between pathology groups for key outcomes, excluding those reporting rheumatoid arthritis (n = 690)

From: Ultrasound-detected pathologies cluster into groups with different clinical outcomes: data from 3000 community referrals for shoulder pain

  Bursitis (limited inflammation) (n = 291) Bursitis (extensive inflammation) (n = 177) RC tear (n = 122) Limited pathology (n = 100) Test result, p value
Number of painful sitesa 4.0 (3.7–4.2) 4.2 (3.9–4.6) 3.6 (3.3–4.0) 3.0 (2.6–3.3) χ2 = 29.0, p < 0.001
Steroid injection at time of scan 0.49 (0.42–0.55) 0.40 (0.32–0.47) 0.12 (0.06–0.18) 0.34 (0.24–0.44) χ2 = 40.1, p < 0.001
Steroid injection since scan 0.76 (0.70–0.81) 0.67 (0.69–0.75) 0.49 (0.39–0.59) 0.63 (0.52–0.73) χ2 = 20.3, p < 0.001
Physiotherapy 0.59 (0.53–0.66) 0.67 (0.60–0.75) 0.67 (0.58–0.76) 0.53 (0.43–0.63) χ2 = 5.0, p = 0.171
Surgery 0.19 (0.15–0.24) 0.25 (0.18–0.33) 0.35 (0.25–0.46) 0.14 (0.07–0.21) χ2 = 10.5, p = 0.015
Pain at follow-up 0.59 (0.53–0.65) 0.68 (0.61–0.75) 0.81 (0.74–0.88) 0.60 (0.50–0.70) χ2 = 17.3, p < 0.001
SPADI painb 29 (22–36) 32 (23–41) 51 (40–62) 28 (17–40) F(3, 672) = 4.0, p = 0.008
SPADI difficultyb 15 (10–20) 19 (12–25) 31 (23–39) 11 (3–20) F(3, 668) = 4.1, p = 0.006
SPADI totalb 23 (18–29) 25 (18–32) 42 (34–51) 20 (11–29) F(3, 666) = 5.3, p = 0.001
  1. RC Rotator cuff, SPADI Shoulder Pain and Disability Index
  2. All values in the table are adjusted probability of the outcome (95% CI) unless otherwise stated
  3. aAdjusted mean (95% CI)
  4. bAdjusted median (95% CI)