Table 2 Results from factor analysis using horn’s parallel analysis
From: Validation of the Questionnaire to Identify Knee Symptoms (QuIKS) using Rasch analysis
Factor | Empirical eigenvalue (95Â % CI) | Randomly generated eigenvalue | Percent variance explained by empirical eigenvalue |
|---|---|---|---|
1a | 5.97 (5.02, 6.92) | 1.67 | 45.9 |
2 | 1.35 (1.13, 1.57) | 1.49 | 10.4 |
3 | 1.22 (1.03, 1.41) | 1.36 | 9.3 |
4 | 1.12 (0.94, 1.30) | 1.26 | 8.6 |
5 | 0.69 (0.58, 0.80) | 1.18 | 5.2 |