Association between determinants and poor Full Scale Intelligence Quotient (IQfs <−1 SD), poor Verbal Intelligence Quotient (IQv <−1 SD), and poor Performal Intelligence Quotient (IQp <−1 SD): multivariate logistic regression model
| Intelligence score | Low IQfs†# OR† (95% CI)¶ | Low IQv† OR† (95% CI)¶ | Low IQp† OR† (95% CI)¶ |
|---|---|---|---|
| *p<0.05; **p<0.01; †low IQfs, low IQv, and low IQp = <−1 SD; †OR = adjusted odds ratio; ¶95% CI, 95% confidence interval; ‡use of aluminium containing phosphate binders; §RRT, renal replacement therapy; #Hosmer and Lemeshow Goodness of fit test IQfs: p=0.82, IQp: p=0.77, IQv: p=0.96. | |||
| NOTE: only significant determinants of the univariate analysis were entered in the model and only significant determinants in the multivariate model are shown (all set at p<0.4). | |||
| Duration of RRT§ ≥18 y v <18 y | 1.2 (0.2 to 9.2) | 1.0 (0.2 to 7.0) | |
| Duration of dialysis ≥4.0 y v <4.0 y | 3.0 (1.3 to 6.6)** | 3.6 (1.4 to 9.1)** | 2.1 (1.0 to 4.6)* |
| Duration of anaemia ≥1.5 y v <1.5 y | 1.4 (0.6 to 3.2) | 1.5 (0.7 to 3.4) | 1.5 (0.7 to 3.2) |
| Aluminium exposure‡: yes v no | 0.6 (0.2 to 1.8) | 0.8 (0.3 to 2.3) | |
| RRT§ at investigation: dialysis v renal graft | 0.3 (0.1 to 0.8)* | ||
| RRT onset 1972–1982 v 1982–1992 | 1.7 (0.2 to 11.7) | ||
| Primary disease: SLE/cystinosis v other | >10 (0 to ∝) | >10 (0 to ∝) | >10 (0 to ∝) |