Table 5 Adjusted estimates from individual multivariable linear mixed models of associations between fatigue and post-COVID impairments and depression, anxiety, and insomnia

Fixed effects

 Intercept

-.049

[-.105, .007]

.160

[-.096, .034]

.129**

[.050, .208]

 Impairments in mental functions

.201***

[.118, .284]

-.019**

[.064, .256]

.106

[-.008, .219]

 Impairments in sensory functions and pain

.053

[-.051, .156]

.021

[-.139, .101]

.091

[-.052, .235]

 Impairments in body system functions

.008

[-.123, .139]

.016

[-.131, .172]

.066

[-.116, .249]

 Impairments in activities and participation

.069

[-.005, .143]

.319

[-.070, .103]

.032

[-.070, .135]

 Fatigue

.429***

[.344, .514]

.160***

.223, .415]

.255***

[.140, .371]

Random effects

 Individual intercept

.011

.022

.031

Model fit indices

 AIC

-1.134

-.848

-.488

 BIC

-678.014

-505.475

-277.649