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Table 9 Predicting factors for caregiver Social Functioning according to stepwise linear regression models (N = 300)

From: Quality of life among family caregivers of cancer patients: an investigation of SF-36 domains

Independent variables

Model 1

Model 2

Model 3

Model 4

Model 5

Model 6

F value

19.70

13.66

11.40

10.00

9.31

9.05

Corrected R-squared

0.05

0.07

0.09

0.10

0.12

0.13

Coefficients (95% CI)

Constants

51.69***

(43.29, 60.08)

53.50***

(45.08, 61.91)

54.99***

(46.57, 63.41)

56.85***

(48.34, 65.36)

57.60***

(49.13, 66.06)

58.82***

(50.39, 67.25)

(1) Care setting (Outpatient)

12.02***

(6.69, 17.35)

11.30***

(6.00, 16.61)

10.65***

(5.37, 15.93)

10.72***

(5.48, 15.96)

11.30***

(6.08, 16.52)

9.85***

(4.57, 15.14)

(2) ECOG (3)

 

-18.47**

(-32.00, -4.94)

-19.13**

(-32.55, -5.72)

-19.97**

(-33.31, -6.63)

-21.31**

(-34.59, -8.03)

-23.51**

(-36.76, -10.25)

(3) ECOG (4)

  

-24.08*

(-42.85, -5.31)

-23.79*

(-42.43, -5.16)

-24.95**

(-43.45, -6.44)

-28.20**

(-46.69, -9.70)

(4) ECOG (4)

   

-6.71*

(-12.44, -0.98)

-7.52*

(-13.24, -1.80)

-7.49*

(-13.15, -1.82)

(5) ECOG (2)

    

-9.29**

(-16.83, -1.75)

-10.56**

(-18.08, -3.03)

(6) Type of cancer (Prostate)

     

11.11*

(2.73, 19.49)

  1. *p < 0.05, **p < 0.01, ***p < 0.001