Table 1 Factor analysis using a rotated component matrix for subjective health complaint variables (factor loading >0.50 is cut-off point for inclusion)
Subjective health complaint variables | Factor loading | ||
|---|---|---|---|
Factor 1 | Factor 2 | Factor 3 | |
Psychosomatic symptoms | Eigenvalue 6.07 Cronbach’s alpha 0.77 | ||
More tired than before | 0.560 | ||
Sadness | 0.659 | ||
Acid stomach, stomach ache | 0.667 | ||
Pain and aches in heart and chest | 0.692 | ||
Palpitations and extra heart beats | 0.678 | ||
Headache/upper respiratory infection symptoms | Eigenvalue 1.33 Cronbach’s alpha 0.75 | ||
Headache | 0.526 | ||
Cold symptoms | 0.799 | ||
Cough and hoarseness | 0.793 | ||
Nausea | 0.539 | ||
Musculoskeletal pain symptoms | Eigenvalue 1.16 Cronbach’s alpha 0.76 | ||
Neck and shoulder pain | 0.616 | ||
Low back pain | 0.690 | ||
Pain in extremity joints | 0.774 | ||
Muscle pain | 0.754 | ||