Table 4

 Principal components analysis of the psychological variables

IIIIIIIV
Anxious achievement
    Perfectionism0.8450.0020.0890.099
    Perceived stress0.8110.270.080.069
    Anxiety0.7280.4640.0140.061
Negative beliefs
    Depression0.2950.8130.066–0.078
    Negative illness beliefs0.1180.6570.3150.344
Illness behaviour
    Somatisation0.1340.0220.7870.31
    Limiting behaviour0.0140.2610.766–0.304
All-or-nothing behaviour0.120.0790.0160.907