You find several studies that report upon the effectiveness of physiotherapy for improving range of motion flexion following shoulder impingement pathology. They report upon the outcome of range of motion via:
a) goniometry (degrees);
b) distance marking on a wall (height from floor to peak of 'finger climb', in cms); and
c) a self-reported scale from 0 - 20 (higher scores denoting better freedom of flexion movement).
Which of the following statements are correct?

Question

You find several studies that report upon the effectiveness of physiotherapy for improving range of motion flexion following shoulder impingement pathology. They report upon the outcome of range of motion via: 
 a) goniometry (degrees); 
 b) distance marking on a wall (height from floor to peak of 'finger climb', in cms); and 
 c) a self-reported scale from 0 - 20 (higher scores denoting better freedom of flexion movement).  
 Which of the following statements are correct?

Answer

Data from methods a and b can be combined together, but only as a standardised mean difference

Answer

Data from methods a, b and c can be combined together as a standardised mean difference

Answer

You can safely combine the results from methods a and b together as a mean difference of the raw scores as they are both clearly continuous data

Answer

It is not possible to pool the data from method c with any other method - it should only be described separately

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You find several studies that report upon the effectiveness of physiotherapy for...

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