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Table 1 Prevalence and prevalence rate ratios of potential mental health problems. in adulthood by borderline intellectual functioning status and age (fully imputed data).

From: Association of Borderline Intellectual Functioning and Adverse Childhood Experience with adult psychiatric morbidity. Findings from a British birth cohort

 Age 26Age 30Age 34Age 42
Borderline intellectual functioning prevalence (with 95% CI)20.7% (17.1–24.8%)20.8% (17.2–24.9%)23.5% (19.7–27.8%)26.2% (22.2–30.6%)
Higher estimated IQ prevalence (with 95% CI)12.9% (12.3–13.5%)11.5% (11.0–12.1%)15.0% (14.4–15.6%)18.2% (17.5–18.9%)
Model 1: Unadjusted prevalence rate ratio (with 95% CI)1.60 (1.45–1.76)1.81 (1.64–1.99)1.57 (1.44–1.71)1.45 (1.33–1.56)
P value< 0.001< 0.001< 0.001< 0.001
Model 2: Prevalence rate ratio adjusted for participant gender1.63 (1.48–1.79)1.83 (1.67–2.02)1.64 (1.50–1.78)1.46 (1.35–1.58)
P value< 0.001< 0.001< 0.001< 0.001
Model 3: Prevalence rate ratio adjusted for participant gender and exposure to childhood adversities1.31 (1.19–1.45)1.53 (1.38–1.69)1.35 (1.23–1.47)1.35 (1.25–1.47)
P value< 0.001< 0.001< 0.001< 0.001
Model 4: Significance of BIF status by childhood adversities associated with material and/or social deprivationn.sn.sn.sn.s