Predicting South Korea adolescents vulnerable to depressive disorder using Bayesian nomogram: A community-based cross-sectional study

Table 3 Characteristics by prevalence of depressive disorder, n (%) (mean ± SD)

Characteristic	Depressive disorder		P value
	No (n = 1999)	Yes (n = 439)
Gender			< 0.001
Male	1119 (84.9)	199 (15.1)
Female	880 (78.6)	240 (21.4)
Number of siblings (including the subject)			0.671
1 person	301 (84.1)	57 (15.9)
2 people	1217 (81.8)	270 (18.2)
3 people	419 (81.4)	96 (18.6)
4 people	62 (79.5)	16 (20.5)
Mean sleeping hours per day			<0.001
< 5 h	44 (69.8)	19 (30.2)
6 h	191 (80.9)	45 (19.1)
7 h	512 (85.3)	88(14.7)
8 h	841 (85.3)	145 (14.7)
9 h	350 (77.1)	104 (22.9)
≥ 10 h	61 (61.6)	38 (38.4)
Mean conversation time with parents per day			< 0.001
< 30 min	240 (74.6)	116 (25.4)
≥ 30 min and < 1 h	645 (82.6)	136 (17.4)
≥ 1 h and < 2 h	539 (83.7)	105 (16.3)
≥ 2 h and < 3 h	293 (83.5)	58 (16.5)
≥ 3 h	182 (88.3)	24 (11.7)
Satisfaction with academic achievement			< 0.001
Dissatisfied	434 (75.2)	143 (24.8)
Not dissatisfied or satisfied	735 (81.1)	171 (18.9)
Satisfied	812 (87.5)	116 (12.5)
Satisfaction with school life			< 0.001
Dissatisfied	63 (43.8)	81 (56.3)
Not dissatisfied or satisfied	470 (76.3)	146 (23.7)
Satisfied	1457 (87.5)	209 (12.5)
Attention	14.6 ± 3.8	17.7 ± 3.1	< 0.001
Aggression	10.6 ± 3.1	15.1 ± 3.1	< 0.001
Social withdrawal	10.0 ± 3.3	13.6 ± 2.9	< 0.001
Physical symptoms	13.7 ± 4.2	20.2 ± 3.7	< 0.001