Table 6:
Construct Validity: Spearman Correlations (95% CIs) of Anxiety and Depression Symptom Scales With Pain, Fatigue, and Age (N = 227)
| Measure | Pain (95% CI) |
Fatigue (95% CI) |
Disease Activity (95% CI) | Age (95% CI) |
|---|---|---|---|---|
| Depression | ||||
| PHQ-2 | 0.62 (0.53–0.69) |
0.53 (0.43–0.62) |
0.39 (0.27–0.49) |
–0.004 (–0.13 to 0.13) |
| PHQ-9 | 0.70 (0.63–0.76) |
0.68 (0.60–0.74) |
0.47 (0.36–0.56) |
–0.06 (–0.19 to 0.067) |
| PROMIS Depression Short Form-8a | 0.65 (0.57–0.72) |
0.60 (0.51–0.68) |
0.40 (0.29–0.50) |
0.031 (–0.10 to 0.16) |
| HADS-D | 0.63 (0.55–0.70) |
0.63 (0.55–0.71) |
0.39 (0.28–0.50) |
0.024 (–0.0066 to 0.25) |
| Kessler-6 | 0.64 (0.56–0.71) |
0.65 (0.57–0.72) |
0.35 (0.23–0.46) |
–0.12 (–0.37 to –0.13) |
| Anxiety | ||||
| OASIS | 0.55 (0.46–0.64) |
0.56 (0.46–0.64) |
0.29 (0.17–0.40) |
–0.052 (–0.18 to 0.079) |
| GAD-7 | 0.64 (0.56–0.71) |
0.64 (0.56–0.71) |
0.39 (0.27–0.49) |
–0.11 (–0.23 to 0.025) |
| PROMIS Anxiety Short Form-8a | 0.62 (0.53–0.69) |
0.62 (0.53–0.69) |
0.38 (0.27–0.48) |
–0.035 (–0.16 to 0.096) |
| HADS-A | 0.57 (0.47–0.65) |
0.57 (0.48–0.65) |
0.29 (0.17–0.40) |
–0.087 (–0.21 to 0.044) |