Fig. 3

Concentration Curves (CC) showing the distribution of need-standardized MHC use across the income rank. Models standardized for psychological distress (as the only need-indicator: distress measured using the GHQ-12 in 2006–2014 and Kessler 6 in 2021) and controlled for education, sex, age-group and migration status. The closer the curve is to the Line of Equality, the more equal the distribution of need-standardized MHC use among individuals with varying income