Table 1.
Population Characteristics by Severity of Probable Major Depressive Disorder (MDD)
| Screen negative+ n= 3707 | Screen Positive+ | p | |||
|---|---|---|---|---|---|
| Mild MDD n= 186 | Moderate-to-Severe MDD n= 95 | All MDD n= 281 | |||
| Demographic Characteristics a | |||||
| Age in years, mean (SD) | 15.0 (1.4) | 15.3 (1.3) | 15.1 (1.3) | 15.2 (1.3) | 0.01c |
| Female Gender | 49.3% | 67.2% | 73.7% | 69.4% | < 0.01c |
| Public Insurance | 8.5% | 14.5% | 10.5% | 13.2% | 0.02c |
| Race/ethnicity | 0.09 | ||||
| White Non-Hispanic | 59.5% | 59.7% | 67.4% | 62.3% | |
| African-American Non-Hispanic | 7.5% | 8.6% | --d | 7.5% | |
| Hispanic | 6.7 | 6.5% | --d | 6.0% | |
| Asian/Pacific Islander | 8.3% | 5.9% | --d | 5.3% | |
| Other/Unknown | 18.1% | 19.4% | 17.9% | 18.9% | |
| Health Characteristics § | |||||
| Pediatric Chronic Disease Score26 | |||||
| Total, mean (SD) | 412.5 (687.7) | 520.9 (655.9) | 831.9 (1091.3) | 626.0 (840.1) | < 0.01c |
| Excluding antidepressants, mean (SD) | 403.4 (673.6) | 472.5 (627.8) | 725.4 (902.3) | 558.0 (740.3) | < 0.01c |
| BMI z-score, mean (SD) | 0.48 (0.98) | 0.66 (1.0) | 0.67 (0.99) | 0.66 (1.0) | 0.02c |
| Obese | 9.2% | 13.9% | 12.6% | 13.5% | 0.03c |
a
All results are expressed as percentages unless otherwise indicated
b Probable depression severity was categorized by PHQ-2 and PHQ-9 screening results. A PHQ-2 score < 2 OR a PHQ-2 score ≥ 3 and a PHQ-9 score < 10 represented a probably non-depressed patient, a PHQ-9 score of 10-14 represented a probably mildly depressed patient, and a PHQ-9 score ≥ 15 represented a probable moderately-to-severely depressed patient
c
Statistically significant difference between depression screen-negative, screen positive for mild MDD, and screen positive for moderate-to severe MDD groups at p = 0.05 level or below
d
Sample size too small (n ≤ 5) to report sub-categories