Table 1 Summary of participant and fMRI data characteristics by group.
From: Weak functional connectivity in the human fetal brain prior to preterm birth
|  | Fetuses (n = 14) later born prematurely | Fetuses (n = 18) later born at term |
|---|---|---|
Fetal GA at scan | 29.6 (3.7) | 30.3 (3.2) |
Fetal GA at delivery* | 32.4 (4.2) | 38.8 (1.1) |
Maternal depressive symptoms, m (SD) | 15.3 (12.1) | 12.4 (8.5) |
Maternal anxiety symptoms, m (SD) | 36.9 (12.7) | 34.1 (8.2) |
Maternal stress, m (SD) | ||
 Penn State Worry Questionnaire | 19.9 (9.0) | 14.9 (5.9) |
 Perceived Stress Scale* | 46.1 (14.8) | 40.2 (8.7) |
Fetal gestational age at MRI, m (SD) | 29.7 (3.7) | 30.25 (3.3) |
Maternal IQ, m (SD) | 82.8 (13.8) | 78.8 (13.1) |
Ethnicity, n (%) | ||
 Caucasian | 0 | 1 (5.6) |
 African-American | 13 (92.9) | 14 (77.8) |
 Asian | 0 | 1 (5.6) |
 Other | 1 (7.1) | 2 (11.1) |
Education, n (%) | ||
 No GED/High-school diploma | 3 (21.4) | 6 (33.3) |
 GED/High-school diploma | 3 (21.4) | 5 (27.8) |
 Some college | 6 (42.9) | 6 (33.3) |
 2-yr college degree | 1 (7.1) | 1 (5.6) |
 4-yr college degree | 1 (7.1) | 0 |
Annual Income, n (%) | ||
 <$10,000 | 9 (64.3) | 6 (35.5) |
 $10,000–$20,000 | 2 (14.3) | 7 (41.2) |
 $20,000–$30,000 | 2 (14.3) | 3 (17.6) |
 $30,000–$40,000 | 0 | 1 (5.9) |
 >$40 000 | 1 (7.1) | 0 |
Motion during resting-state scan | ||
 Translational mean movement, m (SD) | 0.4 (0.1) | 0.4 (0.1) |
 Rotational mean movement, m (SD) | 0.7 (0.3) | 0.7 (0.4) |
 Translational RMS, m (SD) | 0.2 (0.1) | 0.3 (0.1) |
 Rotational RMS, m (SD) | 0.0 (0.0) | 0.0 (0.0) |
fMRI data characteristics | ||
 SAR, m (SD) | 0.26 (0.1) | 0.3 (0.1) |
 Number of fMRI frames analyzed, m (SD) | 171 (81.2) | 185.4 (50.4) |
 Proportion frames retained after exclusion of periods of movement, % (SD) | 0.6 (0.2) | 0.5 (0.1) |
