TABLE 3.
Estimates for co‐twin serial mediation models
| Somatic symptoms (N = 3079) | Self‐rated health (N = 3079) | Life satisfaction (N = 3079) | ||||
|---|---|---|---|---|---|---|
| β | 95% CI | β | 95% CI | β | 95% CI | |
| Direct effects | ||||||
| AUI to YA Alc Prob (a 1) | 0.27 | [0.24, 0.30] | 0.27 | [0.24, 0.30] | 0.27 | [0.24, 0.30] |
| AUI to EM Alc Prob(a 2) | 0.06 | [0.03, 0.10] | 0.06 | [0.03, 0.10] | 0.06 | [0.03, 0.10] |
| YA Alc Prob to EM Alc Prob(d 21) | 0.36 | [0.32, 0.39] | 0.36 | [0.32, 0.39] | 0.36 | [0.32, 0.39] |
| YA Alc Prob to EM outcome (b 1) | 0.03 | [0.00, 0.07] | 0.00 | [−0.04, 0.04] | −0.02 | [−0.06, 0.01] |
| EM Alc Prob to EM outcome (b 2) | 0.16 | [0.12, 0.20] | −0.10 | [−0.14, −0.06] | −0.19 | [−0.22, –0.15] |
| AUI to EM outcome | −0.03 | [−0.06, 0.01] | 0.01 | [−0.03, 0.05] | 0.01 | [−0.02, 0.05] |
| Indirect effect | ||||||
| AUI via YA and EM alcohol Prob (a 1 * d 21 * b 2) | 0.02 | [0.01, 0.02] | −0.01 | [−0.014, −0.006] | −0.02 | [−0.02, −0.01] |
| Adolescent covariates | ||||||
| BMI to EM outcome | −0.03 | [−0.07, 0.00] | −0.05 | [−0.09, −0.02] | −0.01 | [−0.04, 0.03] |
| Cigarette use to EM outcome | 0.06 | [0.02, 0.09] | 0.00 | [−0.04, 0.04] | 0.02 | [−0.02, 0.05] |
| Sex to EM outcome | −0.10 | [−0.14, −0.07] | 0.02 | [−0.02, 0.06] | −0.00 | [−0.04, 0.03] |
| Early midlife covariates | ||||||
| EM Rel status to EM Outcome | 0.01 | [−0.03, 0.04] | 0.02 | [−0.01, 0.06] | 0.18 | [0.15, 0.21] |
| EM Econ Standing to EM Outcome | 0.15 | [0.12, 0.19] | −0.16 | [−0.19, −0.12] | −0.27 | [−0.31, −0.24] |
| Educational attainment | ||||||
| Secondary education | −0.01 | [−0.05, 0.03] | −0.01 | [−0.05, 0.03] | 0.02 | [−0.02, 0.06] |
| Vocational education | −0.01 | [−0.05, 0.03] | 0.01 | [−0.04, 0.06] | 0.01 | [−0.03, 0.06] |
| Masters or Doctorate | −0.02 | [−0.06, 0.02] | 0.02 | [−0.02, 0.07] | 0.02 | [−0.02, 0.07] |
| Employment | ||||||
| Stay at home | −0.01 | [−0.05, 0.02] | 0.01 | [−0.03, 0.05] | 0.04 | [0.01, 0.08] |
| Student | 0.03 | [−0.01, 0.06] | 0.00 | [−0.03, 0.04] | 0.02 | [−0.02, 0.05] |
| Unemployed | 0.04 | [0.00, 0.07] | −0.02 | [−0.06, 0.01] | 0.02 | [−0.02, 0.05] |
| EM cigarette use | −0.03 | [−0.07, 0.02] | −0.04 | [−0.08, 0.00] | −0.06 | [−0.10, −0.03] |
| EM other drug use | −0.05 | [−0.09, −0.02] | 0.01 | [−0.03, 0.05] | −0.06 | [−0.09, −0.03] |
Note: AUI, Alcohol Use Index; YA, Young Adult; EM, Early Midlife; Alc Prob, Alcohol Problems; Rel, Relationship; Econ, Economic. Bolded values indicate p < 0.05.