Table 3.
Ordinary least-squares regression models of age and gender predicting FPQ-9 scores with quadratic and cubic terms
| Scale | β | Standard Error | t | P Value |
|---|---|---|---|---|
| Fear of Severe Pain subscale | ||||
| Gender, male | –0.168 | 0.105 | –11.029 | <0.001 |
| Age, y | –0.722 | 0.067 | –2.625 | 0.009 |
| Age, quadratic | 2.076 | 0.002 | 3.761 | <0.001 |
| Age, cubic | –1.278 | 0.000 | –4.363 | <0.001 |
| Fear of Minor Pain subscale | ||||
| Gender, male | –0.076 | 0.079 | –4.867 | <0.001 |
| Age, y | –0.206 | 0.050 | –0.736 | 0.462* |
| Age, quadratic | 0.739 | 0.001 | 1.312 | 0.190 |
| Age, cubic | –0.457 | 0.000 | –1.527 | 0.127 |
| Fear of Medical/Dental Pain subscale | ||||
| Gender, male | –0.181 | 0.094 | –11.797 | <0.001 |
| Age, y | –0.929 | 0.060 | –3.353 | 0.001 |
| Age, quadratic | 1.798 | 0.001 | 3.233 | 0.001 |
| Age, cubic | –0.974 | 0.000 | –3.298 | 0.001 |
| Total | ||||
| Gender, male | –0.176 | 0.233 | –11.366 | <0.001 |
| Age, y | –0.765 | 0.147 | –2.749 | 0.006 |
| Age, quadratic | 1.904 | 0.003 | 3.411 | 0.001 |
| Age, cubic | –1.120 | 0.000 | –3.783 | <0.001 |
FPQ-9 = Fear of Pain Questionnaire-9.
*Because: quadratic and cubic terms are nonsignificant when taken out of the model and only age and gender are included, age is significantly associated in a linear fashion (β=0.094, P<0.001).