Table 1.
Demographic data
| N (%) or mean (SD) | DMDD (n = 30) | Other psychiatric disorder (n = 1573) | No psychiatric disorder (n = 3213) | Statistics Wald χ2 or F (p) |
|---|---|---|---|---|
| Gender, male | 23 (76.67) | 888 (56.45) | 1615 (50.08) | 24.37 (< .001) |
| Age | 11.31 (1.66) | 11.42 (1.67) | 11.30 (1.68) | 1.06 (0.35) |
| School grade | ||||
| Grade 3 | 9 (30.00) | 418 (26.57) | 925 (28.79) | 8.18 (0.09) |
| Grade 5 | 10 (33.33) | 403 (25.62) | 884 (27.51) | |
| Grade 7 | 11 (36.67) | 752 (47.81) | 1404 (43.70) | |
| Age of onset of DMDD, years (Age range, years) | 5 (2.79) (1–8) | |||
| Father’s age | 43.43 (6.21) | 44.03 (5.69) | 43.86 (5.70) | 1.23 (0.30) |
| Mother’s age | 39.83 (4.93) | 40.60 (5.05) | 40.40 (4.93) | 0.64 (0.53) |
| Father’s education | ||||
| Junior high school or below | 5 (20.00) | 178 (14.42) | 295 (11.05) | 21.15 (0.002) |
| Senior high school | 11 (44.00) | 622 (50.41) | 1276 (47.81) | |
| College | 8 (32.00) | 312 (25.28) | 753 (28.21) | |
| Postgraduate | 1 (4.00) | 122 (9.89) | 345 (12.93) | |
| Mother’s education | ||||
| Junior high school and below | 4 (14.81) | 160 (13.07) | 278 (10.35) | 15.74 (0.02) |
| Senior high school | 13 (48.15) | 679 (55.47) | 1413 (52.59) | |
| College | 9 (33.33) | 322 (26.31) | 817 (30.40) | |
| Postgraduate | 1 (3.70) | 63 (5.15) | 179 (6.66) |
Note. DMDD: disruptive mood dysregulation disorder; SD: standard deviation