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  1. A New Zealand replication of the IPAM clustering model for low back patients.

    Article - En anglais


    This study examined the reliability of the three-cluster model for chronic low back pain patients found using the Integrated Psychosocial Assessment Model (IPAM).

    A replication study using a sample of patients from a different country was completed.


    Seventy patients (average age=47.05 years, SD=16.11) with chronic low back pain of noncancer origin participated in the study.

    Sixty-two of these patients were attending The Auckland New Zealand Regional Pain Service, while a further eight were attending a private practice pain service in Auckland.

    Outcome Measures 

    Subjects were assessed on the IPAM, which measures pain intensity, disability, coping strategies, attitudes towards and beliefs about pain, depression and illness behaviour, the Medical Examination and Diagnostic Information Coding System, and the Multidimensional Pain Inventory.


    Cluster analyses using the K-means algorithm were performed on the IPAM data.

    The three-cluster solution was preferred according to both the Variance Ratio Criterion and cluster interpretability.

    Two of the three clusters correlated highly with clusters retrieved in the original study (r=0.78, r=0.71), while the third cluster showed partial resemblance (correlation of r=0.31).

    Clusters were named « In Control, » « Depressed and Disabled, » and « High Deniers and Somatizisers. » No differences were found on the physical pathology scores between clusters.

    Decision rules for cluster assignation resu...

    Mots-clés Pascal : Exploration, Homme, Douleur, Chronique, Dos, Echantillonnage en grappe, Australie, Océanie

    Mots-clés Pascal anglais : Exploration, Human, Pain, Chronic, Back (anatomy), Cluster sampling, Australia, Oceania

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 96-0061936

    Code Inist : 002B24O14. Création : 199608.