Table 5.

Subgroup analysis of associations between maternal CES-D scores (per one-score increase) and child prosocial behavior problems (N = 16,258)

Stratified variable	N	OR (95%CI) P value	P for interaction
Maternal age			0.2502
≤30	2543	1.05 (1.04, 1.07) < 0.0001
>30 ≤ 40	12,176	1.05 (1.05, 1.06) < 0.0001
>40	1539	1.04 (1.02, 1.06) < 0.0001
Child age			0.6085
≤4	3818	1.05 (1.04, 1.07) < 0.0001
>4 ≤ 5	5387	1.06 (1.05, 1.07) < 0.0001
>5	7053	1.05 (1.05, 1.06) < 0.0001
Child gender			0.0064
Boy	8341	1.06 (1.05, 1.07) < 0.0001
Girl	7917	1.04 (1.04, 1.05) < 0.0001
Maternal education level			0.0017
≤Junior high school	4541	1.04 (1.03, 1.05) < 0.0001
High school diploma and junior college	7185	1.05 (1.04, 1.06) < 0.0001
Undergraduate degree	4318	1.07 (1.06, 1.08) < 0.0001
≥Master’s degree	214	1.09 (1.04, 1.15) 0.0005
Maternal marital status			0.1012
Married	15,883	1.05 (1.05, 1.06) < 0.0001
Unmarried	375	1.03 (1.00, 1.05) 0.0318
Annual household income (¥)			0.2604
<¥100,000	13,339	1.05 (1.04, 1.05) < 0.0001
≥¥100,000 <¥300,000	2754	1.06 (1.05, 1.08) < 0.0001
≥¥300,000	165	1.06 (1.00, 1.12) 0.0450
Number of children in the household			0.3161
1	4495	1.05 (1.04, 1.06) < 0.0001
≥2	11,763	1.05 (1.05, 1.06) < 0.0001
Overreactive parenting score tertile			0.1742
Low	5254	1.05 (1.04, 1.06) < 0.0001
Middle	5362	1.04 (1.03, 1.05) < 0.0001
High	5642	1.04 (1.03, 1.04) < 0.0001

Note: ¥, yuan renminbi (to convert to US dollar, multiply by 7.30)

Abbreviation: CI Confidence interval, OR Odds ratio