What test can be used to determine whether the mean

What test can be used to determine whether the mean balance score is the same for RA and OA patients? What are some assumptions of this test? 


Rheumatology

A study was conducted [12] comparing muscle function between patients with rheumatoid arthritis (RA) and osteoarthritis (OA). A 10-point scale was used to assess balance and coordination in which a high score indicates better coordination. The results were as shown in Table 8.20 for 36 RA patients and 30 OA patients.

Table 8.20: Comparison of balance scores for patients with RA vs. OA

 Mean balance sd score 3.0 36 30 3.4 RA 2.5 2.8 OA

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