Associations between diet quality indices and psoriasis severity: results from the Asking People with Psoriasis about Lifestyle and Eating (APPLE) cross-sectional study. – CORRIGENDUM

This corrigendum affects the Mediterranean Diet Score.Although distributions and correlations were not significantly altered from the data in the original manuscript, the revised manuscript comprises of minor amendments to Table 2 and Supplementary Information 6.In the revised manuscript, the associations between the Mediterranean diet score and psoriasis severity are not statistically significant at multinomial regression level resulting in modifications to ORs, 95% CIs, and P values in Table 3, and Supplementary Information 8. Reference to the Mediterranean Diet Score is removed from Table 4, Supplementary Information 9, and Supplementary Information 10.This correction arises from an incidental finding regarding the 'meat and poultry' component of the Mediterranean Diet Score, which was subject to a formula error.Revised text and Table 2 For the MDS (score range 0-9) the mean (standard deviation) was 4.66 (1.72), for the DASH (score range 8-35) it was 23.88 (5.58), and for the PDI subtypes, the mean scores were 51.30 (7.29) for the oPDI, 52.29 (9.05) for the hPDI, and 51.64 (8.34) for the uPDI (score range 17-85 for all).Only the uPDI reported no significant correlation with psoriasis severity.The remaining diet quality indices were negatively correlated with psoriasis severity: DASH (r -0.258, P < 0.001), hPDI (r -0.203, P = 0.001), MDS (r -0.192, P = 0.002) and oPDI (r -0.175, P = 0.005).DQI = Diet Quality Index; MDS = Mediterranean Diet Score; DASH = Dietary Approaches to Stop Hypertension; oPDI = original Plantbased Diet Index; hPDI = healthy Plant-based Diet Index; uPDI = unhealthy Plant-based Diet Index.The mean (standard deviation) of the DQIs are expressed as normalised values.Psoriasis severity was determined using the self-assessed Simplified Psoriasis Index.sa-SPI: 10 points (mild psoriasis); 10 -20 points (moderate psoriasis); 20 -70 points (severe psoriasis).MDS: 3 points (low adherence); 3 -6 points (modest adherence); 6 -9 points (high adherence).DASH: 8 points (very low adherence); 8 -16 points (low adherence); 16 -24 points (modest adherence); 24 -32 points (high adherence); 32 -40 points (very high adherence).oPDI: 17 points (very low adherence); 17 -34 points (low adherence); 34 -51 points (modest adherence); 51 -68 points (high adherence); 68 -75 points (very high adherence).hPDI: 17 points (very low adherence); 17 -34 points (low adherence); 34 -51 points (modest adherence); 51 -68 points (high adherence); 68 -75 points (very high adherence).uPDI: 17 points (very low adherence); 17 -34 points (low adherence); 34 -51 points (modest adherence); 51 -68 points (high adherence); 68 -75 points (very high adherence).