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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Am J Transplant. 2012 Sep 7;12(12):3387–3397. doi: 10.1111/j.1600-6143.2012.04243.x

Table 3.

Standardized regression coefficients indicating effects of demographic, psychosocial resources, and perceived caregiver burden factors on HRQOL at 12 months post-transplant (controlling for HRQOL at 2 months post-transplant).

Potential Predictorsa, b Quality of Life Measures
General Health Physical Functioning Vitality Bodily Pain Role Physical Role Emotional Social Functioning Mental Health
Caregiver Demographics
 Age, younger .21** .22** −.05 .10 .14* .03 .00 −.02
 Gender, female .08 .06 −.02 −.10 .01 .17** .00 −.02
 Education, > high school .16** .13 .08 .10 .12 .11 .03 −.01
 Income, > $39,999 .03 .17* .03 .11 .03 .06 .16* .00
R2 .09 .13 .01 .07 .04 .05 .04 .00
F (5,201) 4.04** 6.23*** 0.43 2.93* 1.84 2.20 1.50 0.12
Caregiver Psychosocial Resourcesc
 Optimism, higher .09 .11 .18* .08 .10 .06 .14 .07
 Mastery, higher .15* .02 −.11 .01 −.03 .03 .00 .21**
 Relationship with recipient, better −.01 −.08 .07 −.08 −.05 .02 −.06 .03
 Family support, better .08 −.03 −.09 .01 .06 .10 .12 .09
Caregiver Burden Variables
 Nursing tasks, more .02 −.04 −.11 .03 .00 −.09 −.08 −.05
 Activities impairment, greater −.01 −.17* −.02 −.03 −.10 .00 .05 −.08
 Personal burden, greater −.07 −.03 −.18* −.16* −.08 −.13 −.11 −.02
Caregiver HRQOL at 2 mos. post .45*** .44*** .29*** .43*** .19* .18* .19** .26**
Increment to R2 .27 .24 .33 .25 .08 .12 .12 .23
F (df = 8,193) 10.06*** 9.30*** 11.92*** 8.00*** 2.29* 3.63** 3.31** 7.27***
*

p < .05;

**

p < .01;

***

p < .001 (Note: specific p-values for each coefficient are available from the first author upon request.)

a

All models examining potential risk factors controlled for transplant group (lung vs. heart recipients; no significant effects). Additional demographic characteristics (race/ethnicity, occupation, type of relationship with recipient), patient health characteristics (physical functional status, length of hospital stay posttransplant, occurrence of acute graft rejection) and posttransplant caregiver psychosocial characteristics (active coping, support/emotional expression coping, acceptance coping, friend support, caregiving tasks related to household management) showed small bivariate associations with all HRQOL outcomes variables (r or phi < .20). Thus, they were not included in the multivariate models.

b

Caregivers had missing data on: family support (n=8), nursing tasks (n=4).