Table 1.
Descriptive statistics
| Range | ||||||
|---|---|---|---|---|---|---|
| n | Missing (%) | M | SD | Min | Max | |
| Child anxiety and depressive symptoms | ||||||
| 4.5 years | 427 | 24% | 1.91 | 1.60 | 0 | 10.00 |
| 11 years | 407 | 27% | 3.18 | 3.21 | 0 | 15.00 |
| AP1 (mostly mothers) anxiety symptoms | ||||||
| 9 months | 546 | 3% | 3.74 | 3.58 | 0 | 21.00 |
| 18 months | 513 | 9% | 3.43 | 3.59 | 0 | 28.00 |
| 27 months | 522 | 7% | 3.46 | 4.02 | 0 | 31.00 |
| 4.5 years (BAI-Cohort I) | 297 | 18% | 5.01 | 4.72 | 0 | 27.00 |
| 4.5 years (STAI-Cohort II) | 147 | 26% | 34.64 | 9.09 | 21.00 | 69.00 |
| 6 years | 444 | 21% | 34.79 | 8.94 | 20.00 | 71.00 |
| 7 years | 344 | 39% | 34.59 | 8.39 | 20.00 | 72.00 |
| 8 years (Cohort I only) | 237 | 58% | 34.34 | 8.68 | 20.00 | 68.00 |
| 11 years | 392 | 30% | 33.39 | 8.62 | 20.00 | 64.00 |
| AP1 (mostly mothers) depressive symptoms | ||||||
| 9 months | 546 | 3% | 3.63 | 3.30 | 0 | 17.00 |
| 18 months | 512 | 9% | 3.86 | 3.92 | 0 | 25.00 |
| 27 months | 522 | 7% | 3.89 | 4.19 | 0 | 30.00 |
| 4.5 years (BDI-Cohort I) | 297 | 18% | 4.48 | 4.38 | 0 | 28.00 |
| 4.5 years (CES-D-Cohort II) | 147 | 26% | 6.58 | 6.30 | 0 | 35.00 |
| 6 years | 444 | 21% | 7.21 | 7.58 | 0 | 52.00 |
| 7 years | 447 | 20% | 7.30 | 7.29 | 0 | 50.00 |
| 8 years (Cohort I only) | 240 | 57% | 7.55 | 7.22 | 0 | 54.00 |
| 11 years | 390 | 30% | 7.12 | 6.66 | 0 | 38.00 |
| AP2 (mostly fathers) anxiety symptoms | ||||||
| 9 months | 519 | 7% | 3.02 | 3.14 | 0 | 19.00 |
| 18 months | 491 | 12% | 2.31 | 3.13 | 0 | 23.00 |
| 27 months | 492 | 12% | 2.28 | 3.20 | 0 | 30.00 |
| 4.5 years (BAI-Cohort I) | 283 | 22% | 3.25 | 4.04 | 0 | 28.00 |
| 4.5 years (STAI-Cohort II) | 133 | 33% | 34.03 | 8.32 | 20.00 | 58.00 |
| 6 years | 405 | 28% | 32.90 | 8.47 | 20.00 | 59.00 |
| 7 years | 299 | 47% | 33.17 | 8.56 | 20.00 | 57.00 |
| 8 years (Cohort I only) | 189 | 66% | 32.33 | 9.18 | 20.00 | 62.00 |
| 11 years | 336 | 40% | 31.25 | 8.37 | 20.00 | 62.00 |
| AP2 (mostly fathers) depressive symptoms | ||||||
| 9 months | 519 | 7% | 3.02 | 3.22 | 0 | 27.37 |
| 18 months | 487 | 13% | 2.96 | 3.44 | 0 | 22.00 |
| 27 months | 491 | 12% | 2.88 | 3.82 | 0 | 41.00 |
| 4.5 years (BDI-Cohort I) | 284 | 21% | 3.67 | 4.67 | 0 | 39.00 |
| 4.5 years (CES-D-Cohort II) | 133 | 33% | 6.50 | 6.06 | 0 | 29.00 |
| 6 years | 408 | 27% | 6.44 | 5.97 | 0 | 29.00 |
| 7 years | 391 | 30% | 6.17 | 6.05 | 0 | 28.00 |
| 8 years (Cohort I only) | 193 | 66% | 6.46 | 6.33 | 0 | 38.00 |
| 11 years | 335 | 40% | 6.16 | 5.89 | 0 | 30.00 |
| BP internalizing (genetic influences) | 551 | 2% | 0 | 1.64 | −4.06 | 9.14 |
| BM internalizing during pregnancy | 539 | 4 % | 0 | 1.00 | −1.23 | 3.41 |
Note. BP = birth parents, BM = birth mother, AP = adoptive parents. BAI = Beck Anxiety Inventory, STAI = State Trait Anxiety Inventory, BDI = Beck Depression Inventory, CES-D = Center for Epidemiologic Studies Depression Scale. BP internalizing (genetic influences) and BM internalizing during pregnancy are standardized scores. AP and child anxiety and depressive symptoms are raw scores, although standardized scores for AP symptoms are used in analyses. AP anxiety symptoms are measured by BAI (possible range from 0–63) prior to 4.5 years, measured by STAI (possible range from 20–80) after 4.5 years. AP depressive symptoms are measured by BDI (possible range from 0–60) prior to 4.5 years, measured by CES-D (possible range from 0–60) after 4.5 years.