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.

Wiklund et al. BMC Public Health 2012 12:993   doi:10.1186/1471-2458-12-993

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