2.4 Data analysis
Data was analysed using SPSS version 28. The relationship between IPQ-R subscales, AD severity, caregiver SE and QoL were examined using Spearman Rho (where data did not meet assumptions for parametric tests) and Pearson correlations. Multiple regression models explored predictors of caregiver QoL. All tests were two-tailed and alpha was set at 0.05. Mediation analysis using the PROCESS macro was conducted to see if SE mediated between IPQ-R domains and QoL scores. The direct and indirect effect and the 95% CI were estimated based on 5000 bootstrapped samples.