| Age 26 | Age 30 | Age 34 | Age 42 |
---|---|---|---|---|
Borderline intellectual functioning prevalence (with 95% CI) | 17.0% (14.5–19.8%) | 16.7% (14.5–19.8%) | 19.6% (17.2–22.2%) | 22.0% (19.3–25.0%) |
Higher estimated IQ prevalence (with 95% CI) | 12.7% (11.9–13.5%) | 11.6% (10.9–12.3%) | 14.4% (13.6–15.2%) | 17.6% (16.6–18.5%) |
Model 1: Unadjusted prevalence rate ratio (with 95% CI) | 1.34 (1.13–1.59) | 1.44 (1.25–1.66) | 1.36 (1.18–1.57) | 1.26 (1.09–1.45) |
P value | < 0.01 | < 0.001 | < 0.001 | < 0.01 |
Model 2: Prevalence rate ratio adjusted for participant gender | 1.37 (1.16–1.61) | 1.45 (1.26–1.68) | 1.38 (1.20–1.59) | 1.26 (1.09–1.45) |
P value | < 0.001 | < 0.001 | < 0.001 | < 0.01 |
Model 3: Prevalence rate ratio adjusted for participant gender and exposure to childhood adversities | 1.12 (0.94–1.32) | 1.21 (1.04–1.40) | 1.17 (1.01–1.35) | 1.10 (0.95–1.27) |
P value | n.s. | < 0.05 | < 0.05 | n.s. |
Model 4: Significance of BIF status by childhood adversities associated with material and/or social deprivation | n.s | n.s | n.s | n.s |