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Updated: Jul 28, 2026

An Experimental Paradigm for the Prediction of Post-Operative Pain (PPOP)
Published on: January 27, 2010
Sociodemographic and clinical correlates of P-A-I-N
R M Costello1, L S Schoenfeld, S Ramamurthy
1University of Texas Health Science Center, San Antonio 78284-7792.
Abstract:
Rules to clarify MMPI profiles into four types (P-A-I-N) observed commonly in chronic pain patient populations were tested to determine if resulting average profiles matched computer-algorithm derived prototypes. Close matches were obtained, suggesting that the rules could be used in the ordinary pain clinic setting to look for type x treatment interactions. Seven clinical variables differentiated the types. Type P and N were most different from one another, and Types A and I represented poles on an optimism-pessimism dimension.
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