Table 1.
Comparison of Participants with and without CPM Data on Continuous Background Variables
| Completed CPM (n=251) |
Did not Complete CPM (n=51) |
||||||
|---|---|---|---|---|---|---|---|
| Continuous Variable | M | SD | M | SD | t | p | d |
| Age (years) | 28.928 | 12.796 | 32.882 | 14.271 | 1.834 | 0.071 | 0.303 |
| Adverse Life Events (ALEs) | 2.084 | 1.612 | 2.000 | 1.575 | −0.345 | 0.731 | −0.052 |
| Body Mass Index (kg/m2) | 24.920 | 4.232 | 25.492 | 4.158 | 0.891 | 0.376 | 0.136 |
| Mean Arterial Pressure (mmHg) | 85.274 | 9.149 | 86.901 | 7.968 | 1.251 | 0.215 | 0.181 |
| Dispositional Pain Catastrophizing (PCS; 0–52) | 9.624 | 7.573 | 9.143 | 7.853 | −0.394 | 0.695 | −0.063 |
| Negative Affect (PANAS; 0–40) | 2.900 | 2.604 | 2.939 | 2.520 | 0.098 | 0.922 | 0.015 |
| Positive Affect (PANAS; 0–40) | 18.536 | 7.275 | 19.235 | 8.326 | 0.338 | 0.740 | 0.095 |
| State Anxiety (STAI; 20–80) | 32.736 | 7.098 | 31.694 | 7.335 | −0.914 | 0.364 | −0.146 |
| SCL-90 - Global Severity Index (0–4) | 0.125 | 0.087 | 0.096 | 0.082 | −2.223 | 0.041 | −0.331 |
| Perceived Stress (PSS; 0–40) | 13.852 | 6.005 | 13.326 | 6.031 | −0.529 | 0.599 | −0.088 |
| SF-36 Body Pain Scale (0–100) | 90.200 | 10.802 | 93.023 | 8.139 | 1.993 | 0.050 | 0.270 |
| SF-36 General Health Scale (0–100) | 79.480 | 13.765 | 79.070 | 14.811 | −0.169 | 0.866 | −0.029 |
| Subjective Sleep Quality (0–3) | 1.106 | 0.764 | 1.167 | 0.753 | 0.194 | 0.853 | 0.079 |
Note. PCS=Pain Catastrophizing Scale. PANAS=Positive and Negative Affect Schedule. STAI=State Trait Anxiety Inventory. SCL-90= Symptom Checklist 90. PSS=Perceived Stress Scale. SF-36= Medical Outcomes Short Study From, 36-item.