Pain Research and Treatment / 2013 / Article / Tab 3

Clinical Study

Opioid Use in Fibromyalgia Is Associated with Negative Health Related Measures in a Prospective Cohort Study

Table 3

Results of Multivariate and Univariate tests of General Linear Model Repeated Measures.

Variable Multivariate test—Wilk’s Lambda— Between-Subject Effects—Main effect of Opioid status— Interaction Opioid status * time
Function sigEta squared sigEta squared sigEta squared

FIQ13.150.0010.9511.080.0010.0810.4930.4840.004
HAQ3.6510.580.0285.2460.0240.0396.7160.0110.049
Depression50.1690.0010.2802.5540.1120.0190.5380.4640.004
Anxiety13.1670.0010.0930.8000.3730.0060.1810.6710.001
VAS4.4200.0370.0335.4340.0210.0410.6320.4280.005
PGA2.2640.1350.0178.2310.0050.0600.3770.5400.003
McGill Total13.1020.0010.0939.9050.0020.0722.0460.1550.016
Catastrophizing24.0480.0010.1591.0150.3160.0080.2950.5880.002