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. 2017 Mar 21;26(8):2161–2170. doi: 10.1007/s11136-017-1554-0

Table 3.

Multivariate regression analyses predicting health-related quality of life by the psychosocial predictor variables controlling for demographic variables in adults with irritable bowel syndrome

Predictor variables β 95% CI for β Semi-partial eta-square
Age −0.1179078 −0.5165177 0.2807021 0.0119
Sex (Female) −7.2099430 −12.5963252 −1.8235608 0.0095
Pain −2.3974491 −3.6435407 −1.1513575 0.3131
Catastrophizing −1.1027754 −1.5275834 −0.6779674 0.3149
Anxiety −1.2723519 −2.2751593 −0.2695445 0.0794
Somatization 1.5202876 0.6005868 2.4399884 0.0000
Depression −2.4499983 −3.6279140 −1.2720826 0.0003
Anxiety*somatization −0.1659669 −0.2506989 −0.0812349 0.0353
Anxiety*depression 0.2228991 0.1355720 0.3102263 0.0258
R 2 full model 0.79*** NA

βstandardized regression coefficients (beta weights), R 2 percentage of variability in the dependent variable (HRQOL mean) explained in the model

*p < 0.05, **p < 0.01, ***p < 0.0001