3.3. Postcode-level associations by neighbourhood deprivation
Deprivation status of LSOAs did not affect the correlations. If postcodes in London were stratified by deprivation tertiles, correlations between noise and air pollution metrics were of similar magnitude than across all of London. As Supplemental Table S6 shows, correlations between noise and air pollution metrics were marginally higher in the 2nd Tertile and lowest in the 1st Tertile — for example, correlations between LAeq,24 h and PM2.5traffic Tertile 1: r = 0.49; Tertile 2: r = 0.57, Tertile 3: r = 0.55.