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Table 3 Multiple linear regression model of health quality in PSS patients and controls

From: Primary Sjögren's Syndrome: health experiences and predictors of health quality among patients in the United States

 

SF-36 Domain Dependent Variable

Predictor

Physical Functioning

Emotional Well-Being

General Health

 

R 2

β

SE

R 2

β

SE

R 2

β

SE

PhysR-PSS Patients ( n = 201):

         

Sicca severity (domain from SSI)

0.01

0.09

0.32

0.00

0.03

0.19

0.00

-0.06

0.23

Somatic fatigue (domain from PROFAD-SSI)

0.07

-0.52***

1.44

0.01

-0.17

0.87

0.08

-0.54***

1.05

Mental fatigue (domain from PROFAD-SSI)

0.00

-0.03

1.34

0.00

-0.03

0.81

0.00

-0.03

0.98

Depression (CES-D)

0.00

0.01

0.19

0.25

-0.72***

0.11

0.01

-0.12

0.14

Pain severity (domain from BPI)

0.04

-0.28***

0.83

0.02

0.18**

0.50

0.00

-0.07

0.60

Age

0.05

-0.25***

0.13

0.00

0.05

0.08

0.01

0.09

0.10

Duration of disease

0.00

-0.04

0.20

0.00

0.04

0.12

0.00

-0.02

0.14

Controls ( n = 498):

         

Sicca severity (domain from SSI)

0.00

0.09*

0.28

0.00

-0.01

0.18

0.01

-0.10*

0.24

Somatic fatigue (domain from PROFAD-SSI)

0.05

-0.37***

0.98

0.00

0.00

0.63

0.08

-0.46***

0.85

Mental fatigue (domain from PROFAD-SSI)

0.00

0.08

0.90

0.00

-0.07

0.58

0.01

0.13*

0.79

Depression (CES-D)

0.00

0.01

0.12

0.25

-0.65***

0.08

0.01

-0.13**

0.10

Pain severity (domain from BPI)

0.08

-0.35***

0.52

0.00

-0.02

0.34

0.01

-0.15***

0.46

Age

0.11

-0.34***

0.06

0.04

0.19***

0.04

0.00

-0.05

0.05

  1. Note: The R-square values for the individual predictors are the incremental R-squares.
  2. Note: All coefficients marked with one or more asterisks are significant by a two-tailed t-test.
  3. * p < .05; ** p < .01; *** p < .001.