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Table 1 GRASP intervention groups 2 × 2 factorial design

From: Progressive exercise compared with best practice advice, with or without corticosteroid injection, for the treatment of rotator cuff disorders: statistical analysis plan for the Getting it Right: Addressing Shoulder Pain (GRASP) 2 × 2 factorial multicentre randomised controlled trial

 

No corticosteroid injection

Corticosteroid injection

Effect of individually tailored progressive exercise programme

Individually tailored progressive exercise programme

ProgEx

ProgEx+I

(ProgEx) + (ProgEx+I)

vs.

(BPA) + (BPA+I)

Best practice advice

BPA

BPA + I

Effect of corticosteroid injection

(ProgEx+BPA) vs. (ProgEx+I) + (BPA+I)