Table 1.
Sample demographics.
| PMCP | N = 139 (n = 278 scans; 2 scans per participant) | ||||||
|---|---|---|---|---|---|---|---|
| Age by wave |
Wave 1 20.06 (0.21) |
Wave 2 22.04 (0.13) |
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| Race |
White American n = 72 (51.8%) |
African American n = 55 (39.57%) |
Mixed n = 8 (5.76%) |
Other n = 4 (0.72%) |
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| Time between scans (years) |
Mean (SD) 1.98 (0.23) |
Median (IQR) 2 (1.95–2.06) |
Min 0.77 |
Max 2.7 |
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| PGS-E | N = 145 (n = 439 2–4 scans per participant) | ||||||
| Number of scans |
2 scans n = 45 (31.1%) |
3 scans n = 51 (35.17%) |
4 scans n = 49 (33.79%) |
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| Age by wave |
Wave 1 16.85 (0.51) |
Wave 2 18.01 (0.5) |
Wave 3 19.18 (0.47) |
Wave 4 20.28 (0.46) |
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| Age at scan |
15 yrs. old n = 7 (1.6%) |
16 yrs. old n = 61 (13.9%) |
17 yrs. old n = 101 (23%) |
18 yrs. old n = 101 (23%) |
19 yrs. old n = 101 (23%) |
20 yrs. old n = 61 (13.9%) |
21 yrs. old n = 7 (1.6%) |
| Race |
White American n = 35 (24%) |
African American n = 101 (69.66%) |
Mixed n = 9 (4.83%) |
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| Time between scans (years) |
Mean (SD) 1.27 (0.54) |
Median (IQR) 1.157 (0.99–1.33) |
Min 0.44 |
Max 4.18 |
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Descriptive information of the sample demographics of the Pitt Mother & Child Project (PMCP) study and the Pittsburgh Girls Study – Emotions substudy (PGS-E). SD= standard deviation. IQR = inter quartile range (Q1 – Q3).