Table 7 Predicting factors for caregiver General Health according to stepwise linear regression models (N = 300)

F value

95.32

50.87

36.20

28.91

24.30

Corrected R-squared

0.24

0.25

0.26

0.27

0.28

Coefficients (95% CI)

Constants

57.33***

(54.94, 59.72)

56.66***

(54.21, 59.10)

58.31***

(55.50, 61.11)

59.23***

(56.34, 62.12)

59.69***

(56.79, 62.60)

(1) Time since diagnosis (≥ 24 months)

-24.72***

(-29.71, -19.74)

-24.71***

(-29.66, -19.76)

-26.37***

(-31.49, -21.26)

-26.25***

(-31.33, -21.17)

-26.64***

(-31.70, -21.58)

(2) Type of treatment (Radiation therapy)

9.18*

(1.19, 17.17)

9.34*

(1.40, 17.27)

10.35*

(2.43, 18.27)

10.47**

(2.59, 18.35)

(3) Time since diagnosis (12–23 months)

-6.29*

(-11.63, -0.94)

-6.48*

(-11.79, -1.17)

-5.78*

(-11.10, -0.46)

(4) ECOG (2)

-7.04*

(-12.99, -1.08)

-7.53*

(-13.47, -1.59)

(5) ECOG (3)

-11.43*

(-22.02, -0.83)