Association of premature birth and maternal education level on attention deficit hyperactivity disorder in children: A meta-analysis

Figure 1  Flow diagram of study selection.

Figure 2 Meta-analysis of premature delivery and attention deficit hyperactivity disorder in children. A: Premature vs term; B: Very preterm vs mid-late premature. OR: Odds ratio; CI: Confidence interval.

Figure 3 Meta-analysis forest map of mothers with different years of education. A: ≥ 12 years vs 12 years; B: ≥ 12 years vs 9 years; C: ≥ 12 years vs 9 years; D: ≥ 12 years vs 9-12 years; E: 9-12 years vs < 9 years. After the adjustment of meta-analysis, the studies with large heterogeneity were manually excluded. OR: Odds ratio; CI: Confidence interval.

Figure 4 Subgroup analysis of the influence of mother's education level on attention deficit hyperactivity disorder in children forest map. A: China vs other country; B: Multicenter vs single center. OR: Odds ratio; CI: Confidence interval.

Figure 5 Sensitivity analysis chart of mother’s education level. CI: Confidence interval.

Figure 6  Funnel diagram of meta-analysis of mother’s education level.