Table 3.
Direct and indirect effect of contact frequency on cognitive performance through depression conditionally in ethnicity (N = 1,348).
| Path: Predictor | Dependent variable model (Y = Cognitive function)
|
Adj R2 (p.value) | |||
|---|---|---|---|---|---|
| B | SE | t | p | ||
| Constant | 1.10 | 0.22 | 4.90 | 0.001 | 0.40 (0.001) |
| Contact frequency (X) | 0.05 | 0.28 | 2.01 | 0.04 | |
| Ethnicity_Arabs | 0.06 | 0.08 | 0.67 | 0.49 | |
| Ethnicity_FSU | −0.05 | 0.05 | −1.01 | 0.31 | |
| Contact frequency X Ethnicity_Arabs | −0.09 | 0.12 | −0.78 | 0.42 | |
| Contact frequency X Ethnicity_FSU | −0.11 | 0.07 | −1.47 | 0.14 | |
| Depressive symptoms | −0.10 | 0.01 | −10.34 | 0.001 | |
| Covariates | |||||
| Gender | −0.01 | 0.03 | −0.08 | 0.93 | |
| Age | −0.02 | 0.01 | −10.08 | 0.001 | |
| Marital status | 0.01 | 0.04 | 0.11 | 0.90 | |
| Education years | 0.04 | 0.01 | 7.95 | 0.001 | |
| Social activities | 0.17 | 0.03 | 4.37 | 0.001 | |
| Self-rated health | 0.08 | 0.02 | 3.92 | 0.001 | |
|
Mediator variable model (M = Depressive symptoms) | |||||
| Path: Predictor | B | SE | t | p | Adj R2 (p.value) |
|
| |||||
| Constant | 5.02 | 0.65 | 7.60 | 0.001 | 0.30 (0.001) |
| Contact frequency (X) | −0.28 | 0.08 | 3.40 | 0.001 | |
| Ethnicity_Arabs | 0.06 | 0.21 | 0.28 | 0.77 | |
| Ethnicity_FSU | 0.40 | 0.17 | 2.29 | 0.02 | |
| Contact frequency X Ethnicity_Arabs | 1.29 | 0.26 | 4.90 | 0.001 | |
| Contact frequency X Ethnicity_FSU | 0.49 | 0.21 | 2.25 | 0.02 | |
Notes: Value labels of categorical variables: ethnicity_Arabs (0 = Jews and FSU immigrants, 1 = Arabs); ethnicity_FSU (0 = Jews and Arabs, 1 = Former Soviet immigrants), gender (0 = male, 1 = female); Marital status (0 = no partner, 1 = has partner); Social activities (0 = no, 1 = yes). The mediator model also controlled for gender, age, marital status, education years, social activities and self-rated health.