Table 3 Hypothesis testing for Spearman’s rank correlations between the Disability of Arm, Shoulder, and Hand questionnaire and comparator instruments (N = 124)

1. The correlation between DASH and NPRS is moderate (i.e., r_s0.30 ≤ r_s < 0.60)

0.484*

Yes

2. The correlation between DASH and SPADI Pain subscale is strong (i.e., r_s ≥ 0.60)

0.752*

Yes

3. The correlation between DASH and SPADI Disability subscale is strong (i.e., r_s ≥ 0.60)

0.830*

Yes

4. The inverse correlation between DASH and SF-36 MCS is strong (i.e., r_s ≥ -0.60)

-0.401*

No

5. The inverse correlation between DASH and SF-36 PCS is moderate (i.e., -0.30 ≤ r_s < -0.60)

-0.517*

Yes