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Helena Knotkova

Publications and source records attributed to Helena Knotkova.

2 recordsLinked to original sources
PubMed2004

What do ratings on unidimensional pain and emotion scales really mean? A Multidimensional Affect and Pain Survey (MAPS) analysis of cancer patient responses.

The purpose of the study was to determine what dimensions of pain predicted scores on numerical rating scales (NRSs) of Pain, Anxiety, Depression, and Health Expectation in cancer patients. Seventy-one patients with intra-abdominal cancer responded to the Multidimensional Affect and Pain Survey (MAPS) and rated their pain and emotion on the NRSs. Scores on the Pain NRS were predicted by 41% of clusters in the MAPS Somatosensory Pain Supercluster, but by 100% of clusters in the Emotional Pain Supercluster, and negatively by 51% of clusters in the Well-Being Supercluster. The Anxiety and Depression NRSs were each predicted by only the Intense Pain cluster in the Somatosensory Pain Supercluster, but by all of clusters in the Emotional Pain Supercluster. The findings indicate that cancer patients' emotional state is a strong co-determinant of their sensory pain ratings. Negative emotional aspects of pain contribute also to scores on the Anxiety, Depression and Health Expectation NRSs.

Aged↗
PubMed2003

Factor analysis validates the cluster structure of the dendrogram underlying the Multidimensional Affect and Pain Survey (MAPS) and challenges the a priori classification of the descriptors in the McGill Pain Questionnaire (MPQ).

The purpose of this study was to validate the content and structure of the Multidimensional Affect and Pain Survey (MAPS) by means of factor analysis. The 101-MAPS is based on a dendrogram obtained by cluster analysis and contains 30 clusters subsumed within three superclusters. If the MAPS is a valid questionnaire for the quantification of emotion and pain in patients, then factor analysis of patients' intensity ratings should produce factors which correspond to the cluster structure of the dendrogram. To confirm the structure of the dendrogram and hence, MAPS, factor analysis was applied to the responses by 100 outpatients diagnosed with early stage cancer. Principal components analysis of responses to the MAPS yielded six factors. In accordance with the hypothesis, 13 of the 17 clusters within the MAPS somatosensory pain supercluster loaded on three sensory factors: factor 1, severe sensory pain; factor 3, moderate sensory pain; and factor 6, numb/cold. Five of the eight clusters within the emotional pain supercluster loaded on factor 2, negative emotions. Four of the five clusters in the well-being supercluster loaded on factor 4, good health. Factor 5, manageable illness was loaded on by clusters from the well-being supercluster and the somatosensory pain supercluster. The homogeneity of the six factors found demonstrate the validity of the MAPS and the cluster structure of the dendrogram. MAPS proved sensitive to sex differences; women endorsed the negative emotions factor more strongly than did men. The MAPS factors were much more homogeneous than those reported in the literature for the McGill Pain Questionnaire.

Adult↗