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 | ||
Selected factors with an eigenvalue greater than 1 explained 53.5% of the variance.
Wiklund et al. BMC Public Health 2012 12:993 doi:10.1186/1471-2458-12-993
