Table 1. Participant Characterization: Demographic Data and Clinical Rating Scales.
| Characteristic | Control | MDD | df | Statistic | Effect Size |
|---|---|---|---|---|---|
| Number of Participants Recruited (n) | 45 | 30 | |||
| Overall Recruitment Gender (M/F) | 17/28 | 11/19 | 1 | ≈0 | ≈0 |
| Rejected Due to Excessive Motion and Outlier Count (n)a | 9 | 7 | 1 | .0033 | ≈0 |
| Number of Participants Surviving Motion and Outlier Correction (n) | 36 | 23 | |||
| Gender (M/F)a | 11/25 | 7/16 | 1 | ≈0 | ≈0 |
| Age at Time of Scan (yrs) | 16.1 ± .2 (13.1-17.9) | 16 ± .3 (13.1-17.8) | 41.35 | .45 | .12 |
| Hollingshead Socioeconomic Scoreb | 29 ± 16.3 (0-77) | 33 ± 26.7 (11-70) | NA | 348.5 | .42 |
| Tanner Scoreb | 4 ± .7 (3-5) | 4 ± .7 (2.5-5) | NA | 446 | .54 |
| Wechsler Abbreviated Scale of Intelligence | 106.4 ± 2.1 (84-133) | 101.5 ± 2.2 (85-120) | 51.97 | 1.61 | .42 |
| Children's Global Assessment Scaleb,c | 90 ± 7.4 (75-100) | 65 ± 14.8 (40-85) | NA | 817.5 | .99 |
| Ruminative Responses Styles Questionnaireb,c | 22 ± 13.3 (0-68) [7] | 57 ± 23.7 (14-101) [2] | NA | 50.5 | .06 |
| Children's Depression Rating Scale (Standardized)c | 33.4 ± .9 (30-55) | 71.2 ± 1.8 (55-85) | 33.34 | −18.96 | −4.99 |
| Beck Depression Inventory IIc | 3 ± .6 (0-12) [1] | 27.3 ± 2.1 (4-47) | 25.72 | −11.16 | −2.94 |
| Comorbid Diagnoses in the MDD Group | |||||
| No comorbid diagnoses | 5 | ||||
| Generalized anxiety disorder | 12 | ||||
| Specific phobia | 2 | ||||
| Anxiety disorder not otherwise specified | 1 | ||||
| Posttraumatic stress disorder | 2 | ||||
| Enuresis | 1 |
Entries are of the form: mean ± SEM (minimum - maximum) unless otherwise stated. The optional number in square brackets indicates the number of missing items of data. Effect size is Hedges' g unless otherwise indicated. Statistical comparisons were by means of Welch t tests unless otherwise indicated.
Statistic is the W, χ2, or t value. Statistics for clinical scales and demographics refer only to participants surviving motion and outlier correction.
F, female; M, male; MDD, major depressive disorder; NA, not applicable.
χ2 test for equality of proportions.
Median ± median (minimum - maximum) or median ± median absolute deviation (minimum-maximum).The optional number in brackets indicates the number of missing items of data. Wilcox rank sum test. The effect size is the probability of superiority.
p < .001.