Table 4.

Predicted Effects of Family Structure on Caregiving Efforts of Nondisabled (ND) Spouse to Disabled (D) Spouse

Model A	No Children	Any Children
Hours of Spousal Care	13.4	23.0**
Proportion of total care by spouse	93.0%	89.4%
Model B	No Children	Stepchildren	Joint Children
Hours of Spousal Care	13.6*	27.1	22.2
Proportion of total care by spouse	93.0%	89.3%	90.1%
Model C	No Children	Step low attachment	Step high attachment	Joint Children
Hours of Spousal Care	13.3*	17.4	28.5	22.3
Proportion of total care by spouse	92.9%	87.2%	90.7%	89.3%
Model D	No Children	Step low attachment Nondisabled Parent	Step low attachment to Disabled Parent	Step high attachment	Joint Children
Hours of Spousal Care	13.2*	8.9*	27.8	28.1	22.4
Proportion of total care by spouse	92.9%	87.2%	87.1%	90.7%	89.3%

Notes: Italic bold headings indicate the reference category. Family structure is displayed hierarchically from left to right according to degree of attachment between adult children and their elderly parent(s).

^**Denotes differences from reference category that are statistically significant at p≤0.10;

^*at 0.10>p≤0.15 level.