Fig. 1: Time-trends in the urinary concentrations of DEHP metabolites (µg/L).

a 5cx-MEPP in US adults. b 5cx-MEPP in Chinese children. c 5oxo-MEHP in Chinese children. Each symbol is a central value (i.e. median or geometric mean). The size of the symbols is related to the study-specific sample size (N) and its weight in the time-trend calculation (see Statistical methods, time-trend analysis). Data from the same data source (Study ID number: see Data traceability in the “PhthaLit” database) are identified by symbols with the same colour in all panels and figures. Grey area: 90% confidence interval.