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Table 1 Three-factor solution according to a principal component analysis, Varimax rotation. The questions are ordered after their factor loading.

From: Psychometric properties of a Swedish translation of the VISA-P outcome score for patellar tendinopathy

  Component  
Question I II III h 2
Q4. Do you have pain when doing a full weight bearing lunge? 0.92 0.18 0.06 0.88
Q5. Do you have problems squatting? 0.90 -0.09 0.25 0.88
Q6. Do you have pain during or immediately after doing 10 single leg hops? 0.88 0.13 0.26 0.86
Q3. Do you have pain at the knee with full active non-weight bearing knee extension? 0.77 0.26 0.12 0.68
Q8. For how long can you manage being train/physically active? 0.75 0.39 0.11 0.73
Q2. Do you have pain walking downstairs with a normal gait cycle? 0.70 0.38 0.24 0.69
Q1. For how many minutes can you sit pain free? 0.23 0.13 0.96 0.99
Q7. Are you currently undertaking sport or other physical activity? 0.17 0.95 0.11 0.94