Table 2.
COVID-19 stress and other associations with somatic symptom severity in the sample of 2020 (n = 1522)
| r | b | SE | β | t | p | 95% CI | |
|---|---|---|---|---|---|---|---|
| Constant | .103 | .070 | 1.32 | .19 | −.047 to .214 | ||
| Demographics | |||||||
| Gender | .24‡ | .117 | .038 | .051 | 2.85 | .004 | .052 to .202 |
| Age | −.05 | −.003 | .001 | −.047 | −2.57 | .01 | −.005 to −.001 |
| Education⁎ | −.26‡ | −.079 | .038 | −.041 | −2.23 | .03 | −.152 to .001 |
| Number of (comorbid) diseases | .42‡ | .186 | .014 | .226 | 12.13 | <.0001 | .151 to .212 |
| Group† | .57‡ | .836 | .045 | .401 | 21.08 | <.0001 | .743 to .899 |
| COVID-19 stress | .35‡ | .157 | .026 | .142 | 6.48 | <.0001 | .109 to .201 |
| Psychological flexibility | −.53‡ | −.006 | .000 | −.330 | −14.17 | <.0001 | −.007 to −.005 |
| COVID-19 stress × Group | .25‡ | −.052 | .056 | −.026 | −1.10 | .27 | −.144 to .063 |
| COVID-19 stress × Psychological flexibility | −.15‡ | −.001 | .000 | −.025 | −1.34 | .18 | −.001 to .000 |
| Group × Psychological flexibility | −.37‡ | .001 | .001 | .032 | 1.31 | .19 | −.001 to .002 |
Pearson correlations (r) and results of the linear regression analysis with bootstrapping examining the association of somatic symptom severity (SF-36) with gender (0 = men, 1 = women), age, education level, number of (comorbid) diseases, group, COVID-19 stress and psychological flexibility and two-way interactions.
b, unstandardized regression coefficient, SE, Standard Error; β, standardized beta; t, t-test statistic; CI, confidence interval of unstandardized regression coefficient.
Education level: 0 = low: lower general secondary education or lower; 1 = high: higher general secondary education or higher.
Group: 0 = non-CSS; 1 = CSS: people with a central sensitivity syndrome.
Pearson correlation with somatic symptom severity was significant at the 0.01 level (2-tailed).