Table II.
Sequential Multiple Regression of Sex, Age, Anxiety Questionnaires, and Anticipatory Anxiety Ratings on Thermal and Pressure Pain Response
| Step | Variables Entered | β | Model R2 | Change in R2 |
|---|---|---|---|---|
| Mean thermal pain (DV) | ||||
| 1 | Sex | -.02 | ||
| Age | -.18 | .14 | .14** | |
| 2 | MASC | .11 | .19 | .05* |
| 3 | CASI | -.05 | .20 | .01 |
| 4 | Anxiety | .65 | .55 | .35** |
| Mean thermal tolerance (DV) | ||||
| 1 | Sex | .22 | ||
| Age | .47 | .32 | .32** | |
| 2 | MASC | -.07 | .32 | .00 |
| 3 | CASI | .15 | .34 | .02 |
| 4 | Anxiety | -.34 | .43 | .10** |
| Mean pressure pain (DV) | ||||
| 1 | Sex | -.11 | ||
| Age | -.10 | .09 | .09** | |
| 2 | MASC | -.04 | .10 | .01 |
| 3 | CASI | -.06 | .10 | .01 |
| 4 | Anxiety | .68 | .48 | .38** |
β = standardized regression coefficient; model R2 = coefficient of determination (goodness of fit) for overall regression model after entry of each independent variable; change in R2 = incremental contribution of an independent variable to R2 in the total set of independent variables; DV = dependent variable; MASC = Multidimensional Anxiety Scale for Children (total score); CASI = Childhood Anxiety Sensitivity Index.
For sex, boys and girls were coded as 1 and 0, respectively. Pain = pain ratings (0-10); tolerance = tolerance in seconds; anxiety = anticipatory anxiety ratings (0-10).
*
p < .05;
**
p < .01.