Table 4: Regression models describing psychophysical QSTs predictors of pain, function and health status (n=44).
| Construct Measure |
Dependent Variable |
QST Variables in the regression model: beta (p values) are shown |
Model |
| PPThSh |
PPToSh |
PPThT |
PPToT |
VTD3 |
VTD5 |
CPTD3 |
CPTD5 |
CPTSh |
R2
|
p value |
| Pain |
SPADI-Pain |
.31(.40) |
-.54(.16) |
-.18(.68) |
.15(.75) |
.12(.50) |
.18(.30) |
.04(.82) |
.14(.45) |
.18(.35) |
.21 |
.53 |
| NRS of Pain |
.57(.09) |
-.55(.12) |
-.38(.35) |
.04(.92) |
-.28(.08) |
>-.28(.08) |
-.05.77) |
.11(.50) |
.11(.53) |
.33 |
.15 |
| PainCS |
.37(.36) |
-.68(.09) |
-.14(.75) |
.19(.69) |
-.19(.29) |
.05(.77) |
-.03.88) |
-.10(.58) |
.28(.14) |
.22 |
.51 |
| Function |
FIT-HaNSA |
.13(.69) |
-.05(.88) |
.09(.81) |
.22(.60) |
-.10(.51) |
.24(.12) |
-.08(.64) |
.13(.42) |
-.21(.21) |
.34 |
.11 |
| SPADI-Disability |
.18(.61) |
-.51(.16) |
-.26(.54) |
.18(.69) |
.03(.88) |
.20(.23) |
-.03.87) |
.11(.54) |
.29(.12) |
.27 |
.28 |
| QuickDASH |
.09(.80) |
-.54(.16) |
-.40(.34) |
.38(.39) |
-.06(.73) |
.05(.76) |
.24.19) |
-.16(.38) |
.30(.11) |
.28 |
.29 |
| Health Status |
SF12-PCS |
-.34(.38) |
.69(.07) |
.66(.13) |
-.72(.11) |
-.04(.82) |
-.02(.90) |
-.17(.33) |
.29(.11) |
-.36(.05)* |
.30 |
.22 |
| SF12-MCS |
.36(.36) |
-.26(.50) |
-.51(.25) |
.68(.13) |
.32(.07) |
.23(.17) |
-.22(.23) |
.21(.25) |
.25(.17) |
.28 |
.28 |
Abbreviations and Symbol: CPTD3, Current Perception Threshold at digit 3 (middle finger ); CPTD5, Current Perception Threshold at digit 5 (little finger ); CPTSh, Current Perception Threshold at Shoulder (mid-deltoid ); DASH, Disabilities of the Arm, Shoulder and Hand; FIT-HaNSA, (Functional Impairment Test-Head and Neck, Shoulder, Arm); MCS, Mental Component Summary; NRS, Numeric Rating Scale; PainCS, Pain Catastrophizing Scale; PCS, Physical Component Summary; PPThSh , Pressure Pain Threshold at Shoulder (mid-deltoid ); PPThT , Pressure Pain Threshold at Tibia (Shinbone ); PPToSh , Pressure Pain Tolerance at Shoulder (mid-deltoid ); PPToT, Pressure Pain Tolerance at Tibia (Shinbone ); QST, Quantitative Sensory Testing; R², Coefficient of determination; SF12, Short Form 12-item health survey version 2; SPADI, Shoulder Pain and Disability Index; VTD3, Vibration Threshold at digit 3 (middle finger ); VTD5, Vibration Threshold at digit 5 (little finger); * beta is significant at 0.05 level and bolded.