Table 3.
Difference-in-Difference Multivariate Regression Results
| Informal care propensity | Hours of informal care | |||
|---|---|---|---|---|
| Coefficient | p Value | Coefficient | p Value | |
| Time and group indicator variables | ||||
| ΔI×t | −0.34† | .13 | −63.5 | .15 |
| ΔO×t | 0.52** | .03 | 90.1* | .08 |
| K B×t | −0.10 | .62 | −14.1 | .72 |
| t: survey wave | 0.18** | .02 | 18.6 | .21 |
| ΔI: sibling and parent begin coresiding | −0.32** | .05 | −63.3** | .04 |
| ΔO: sibling and parent no longer coreside | −0.69*** | .00 | −145.1*** | .00 |
| K B: sibling and parent coreside in both waves | −0.92*** | .00 | −163.5*** | .00 |
| Parent’s characteristics | ||||
| Age | ||||
| 80–84 | 0.13 | .18 | 26.1 | .17 |
| 85+ | 0.20** | .02 | 37.8** | .03 |
| Gender: male | −0.12 | .21 | −22.1 | .23 |
| Race/ethnicity | ||||
| African American/black | 0.11 | .22 | 27.4† | .12 |
| Hispanic | 0.06 | .56 | 54.1*** | .00 |
| Education | ||||
| Less than high school | 0.19* | .06 | 10.6 | .59 |
| Some college | −0.16 | .27 | −25.7 | .38 |
| Marital status: divorced | −0.19† | .15 | −21.2 | .41 |
| Disability level | ||||
| 1–2 ADLs | 0.13† | .11 | 47.6*** | .00 |
| 3+ ADLs | 0.20** | .02 | 70.2*** | .00 |
| Economic status | ||||
| Income | −8.46E-5*** | .00 | −0.01*** | .01 |
| Net worth | −1.2E-7 | .88 | −0.02 | .78 |
| Adult child’s characteristics | ||||
| Age | ||||
| 50–54 | −0.31*** | .00 | −57.7*** | .00 |
| 55–64 | −0.34*** | .00 | −43.8*** | .01 |
| 65+ | −0.38*** | .00 | −46.6** | .03 |
| Gender: male | −0.66*** | .00 | −125.1*** | .00 |
| Marital status: married/partnered | −0.14** | .04 | −39.7*** | .00 |
| Number of children | −0.05** | .04 | −11.7*** | .00 |
| Education | ||||
| Less than high school | −0.15* | .08 | −11.9 | .46 |
| Some college | 0.05 | .55 | −10.6 | .48 |
| Sibling network characteristics | ||||
| Number of siblings | −0.05*** | .00 | −8.9*** | .00 |
| Any sisters | −0.12** | .05 | −24.8† | .14 |
| Any unmarried sibling | 0.05 | .59 | 6.8 | .64 |
| Constant | 0.23* | .14 | 0.58** | .02 |
| Log likelihood | −1,003 | −3,654 | ||
| χ2 | 364*** | 315*** | ||
Note. ADL = activities of daily living; IADL = instrumental activities of daily living. Omitted category for disability is parents with only IADLs, for education is completed high school, for elderly parent’s age is less than 80 years old, for adult children’s age is less than 50 years old, and for family race/ethnicity is non–African American/black, non-Hispanic (primarily Caucasian). Results are statistically significant at ***p < .01; **p < .05; *p < .10; † p < .15.