Table 2. Wrist-Wearable Rest-Activity Biomarkers Associated With the Severity of Specific Adverse Posttraumatic Neuropsychiatric Symptoms at a Point in Timea.
| Construct | Variable | Correlation (95% CI) | P value | Adjusted P value |
|---|---|---|---|---|
| Pain | Daily activity variance | −0.14 (−0.20 to −0.07) | <.001 | <.001 |
| Somatic symptoms | Percentage of the 24-h period scored as wake | −0.09 (−0.13 to −0.01) | .02 | .21 |
| No. of transitions between sleep and wake | −0.07 (−0.10 to 0.03) | .25 | >.99 | |
| Nightmares | Percentage of the 24-h period scored as wake | −0.06 (−0.11 to 0.02) | .16 | >.99 |
| Depressive symptoms | Percentage of the 24-h period scored as wake | −0.05 (−0.12 to 0.01) | .12 | >.99 |
| Pain | Percentage of the 24-h period scored as wake | −0.04 (−0.11 to 0.02) | .18 | >.99 |
| Hyperarousal | Percentage of the 24-h period scored as wake | −0.03 (−0.09 to 0.05) | .57 | >.99 |
| Nightmares | No. of transitions between sleep and wake | −0.03 (−0.08 to 0.05) | .64 | >.99 |
a
Results are based on the validation set (50% of the overall sample; n = 1010); 95% CIs and P values were calculated with R package psych.