Pain ratings, psychological functioning and quantitative EEG in a controlled study of chronic back pain patients.

PLoS One · 2012 · PMC3303776 · PMID 22431961

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approaching significanceno p-value reported

Patients scored significantly worse regarding psychological symptoms in general (BSI, Global Severity Index) as well as on seven of the nine specific subscales with the other two approaching significance.

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showed a trendno p-value reported

Results We were not able to observe a statistically significant TCD effect in the EEG data of the whole patient group, but a subsample of patients with evidence for root damage showed a trend in this direction.

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highly significantno p-value reported

We found medium size but highly significant correlations between the individual pain rating and the EEG parameters as well as between the subjective variables and the EEG patterns.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.